[filmscanners] Re: Digital Darkroom Computer Builders?

2002-10-23 Thread Anthony Atkielski
Laurie writes:

 You may be right that it is a common practice;
 but that does not mean that it cannot come back
 to bite Microsoft.

The likelihood that it will come back to bite Microsoft is no greater than
the likelihood that it will come back to bite any other company that has
been doing it, and in the many decades of IT, I don't know of any cases in
which a company has suffered significantly from behaving in this way.

 Enron engaged in practices that apparently many
 Fortune 500 companies had been engaging in and
 it came back and bite them and a certain percentage
 of the other companies.

Some of their practices were illegal; the practice being discussed here is
not.

 Epson has exhibited similar attitudes and practices
 and has faced serveral consumer revolts by some of
 their heavy users as well as a lose in credibility
 with respect to their claims and literature.

I suspect the additional money they made as a result of such attitudes and
practices far outweighed any consumer backlash.  If this were not the case,
there wouldn't be so many companies doing these things.




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[filmscanners] Re: Digital Darkroom Computer Builders?

2002-10-23 Thread Anthony Atkielski
Andras writes:

 Yes, but it's only Microsoft whose products
 I'm forced to use almost every day ...

You are actually required to use a lot of products with similar practices
every day, you just aren't aware of it.  Have you checked the margins on
Motorola and Intel microprocessors lately?  Do you think the telephone
company is charging for calls at cost?  _Everybody_ does this.

 Sure, but the jump from 32 to 64 bits address
 space gives us a hell lot more time than the
 jump from 16 to 32 or 8 to 16.

It doesn't matter; it will be used up just as quickly.

The mistake engineers make is in believing that address spaces will be
allocated sequentially starting with byte zero and ending with byte 2^N-1.
But that's not how it actually works.  Engineers tend to assume that a given
address space has more space than anyone will ever need and allocate the
space in extremely wasteful but easy-to-code ways that cause it to be
exhausted with alarming speed.

This is why the 32-bit IP address space is in such dire straits, even though
there are nowhere near 4 billion computers on the Net yet.  It is also why
IPv6 and IPv8 will suffer the same fate.  It is also why 32-bit computers
are reaching their limits even for mundane, everyday use.

Years ago I was already seeing systems exhaust 36-bit addressing spaces;
that's 64 billion bytes, easily a thousand times more than the physical
memory capacities available at the time.  Having 36 bits didn't do any good;
incompetent design and coding managed to exhaust address spaces of any size
in short order, no matter how large they were initially.

 Also, 64 bits take us to the physical limits
 of semiconductors ...

How?

 ... so you may be right that we will eventually
 need 128 bits, but that is a long long time
 away (decades, and many generations of computers).

Maybe, maybe not.  There are ways in which 64 bits could be exhausted in
just a few years.  I've seen things like that happen before.

 Sure, but this is merely a software question really.

Once the software is in place, it behaves like hardware.  Contrary to common
myth, even though software is not hardwired into a machine, it is
extraordinarily difficult to change, especially when loaded into hundreds of
millions of machines around the world.  If this were not the case, we would
have all moved to IPv6 overnight when IPv4 near exhaustion.

 Since modern operating systems have elaborate
 and flexible memory handling capabilities, and
 programs make no assumptions as to where in memory
 they are mapped, it's a matter of making modifications
 to the OS and BIOS to solve this problem.

Not really.  Individual applications must allocate virtual space in an
intelligent and economical way as well, and usually they do not.

 The fact that more expensive versions of
 Windows can address 3GB per process shows this.

Not relevant--these expensive versions of Windows still operate within the
32-bit restriction.  The fact that special versions were required even
before the 32-bit limit was reached, however, illustrates the magnitude of
the problem.

In the case of Windows NT and its successors, the problem is that the
original engineers very wastefully declared that 2 GB of the 32-bit address
space would be reserved for the OS, and 2 GB would be reserved for
applications.  Well, as time passed, the application space rapidly approache
exhaustion, while the OS space remained largely empty.  And so a lot of code
had to be rewritten to reduce the OS space and expand the application space.
If the original designers had demonstrated a bit more foresight, this would
never have been necessary.




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[filmscanners] Re: Digital Darkroom Computer Builders?

2002-10-23 Thread Anthony Atkielski
Robert writes:

 But these people don't want any color anyway, and
 maybe not even greyscale ...

Look around you, and count the percentage of printed material that contains
nothing other than black and white.  Color is being used more than ever
before.


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[filmscanners] Re: CMYK rant (was Digital DarkroomComputer Builders?)

2002-10-23 Thread Anthony Atkielski
Roger writes:

 If I understood correctly the CMYK issue, it
 has little to do with photographers but is
 crucial on the printer's side.

Yes.  CMYK is irrelevant if you never intend to print anything on paper; it
is unavoidable if you want hardcopy.

 There seems to be an agreement on the gamut
 limitation relative to RGB and that any file
 translation must use the specific printer profile.

One reason why it is so hard to get a perfect match from inkjet printers is
that they are actually printing in CMYK, even though you are trying to
supply them with an RGB image.

 Digital photographers are now being requested
 to perform most pre-press work (sometimes even
 including blind CMYK conversion) before sending
 their images to the publisher.

Blind CMYK is a really bad idea, since CMYK conversions must always be done
with a specific output device in mind.  If the real output device isn't the
same, image quality is always lost, and it cannot be recovered.

 Some are wondering if it couldn't be more rewarding
 to get back to film photography, sending slides as
 previously and not caring about pre-press and colour
 management.

Just provide files as RGB.  Tweak them to look good on a monitor, not on
paper.  It's up to the end user to convert the image for printing, since
every end user will have different requirements for CMYK conversion.  It's
illogical to expect a photographer to do this, and any customer wanting it
must be pretty clueless about how CMYK works.


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[filmscanners] Re: CMYK rant (was Digital Darkroom Computer Builders?)

2002-10-23 Thread Anthony Atkielski
Andras writes:

 OK, what I actually meant is how many people
 use CMYK colour space when manipulating images
 in PhotoShop or so.

The entire publishing world.  It is a key feature of Photoshop, and a
heavily used one, and one of the most important features of Photoshop to
professionals (which is why it is absent in cheapo versions of PS such as
Photoshop Elements).

 Yes, printers often have CMYK components, but that
 should be hidden from the user by the printer driver.

Most of what is printed on paper in the world doesn't pass through a printer
driver on a PC or Mac.  Most of it passes through large or even huge offset
or other types of printing presses, and these presses understand only CMYK.
They use plates created from films that are exposed by raster-image
processors that understand only CMYK as well.  Outside the tiny world of the
PC or Mac itself, all of the printed material in the on the planet exists in
a CMYK universe.

 For manipulating and storing images, the fourth
 channel black is totally redundant.

No, it is not.  CMYK requires black because most inks on press are not pure
enough to produce a true black from CMY alone.  And the balance between
black ink and CMY must be controlled for each set of circumstances, with
parameters like GCR and UCR.  Therefore images must be manipulated in CMYK
in preparation for printing.

 Also, if CMYK is based on the printer's colour
 space, why CMYK and not CMYKcm or whatever extra
 colours there are?

Uh ... because printers use only four colors in standard process color:
cyan, magenta, yellow, and black.  There aren't any other colors.  (There
are six-color processes, but that is exceptional.)

 There is no such thing as a standard CMYK space ...

Yes, there are standard spaces: SWOP is one such space in the U.S.

 ... each output device has different characteristics.

True, and the only way to tweak for the output device with complete accuracy
is to convert to the CMYK space that it uses.  RGB doesn't cut it.

 A CMYK image file has to be converted to the
 printer's CMYK space using ICC or similar
 transforms anyway ...

No, it does not.  You prepare the CMYK file in Photoshop so that it already
conforms to the space used by the press, then you create your films and
plates from that and you go to press.  Nothing is transformed after you
prepare the CMYK file in PS; that file IS the final image file.

 ... just like any RGB or other image.

CMYK isn't like RGB at all.

 On a computer, the native colour space of the
 monitor is RGB, which also resembles the spectral
 response of the three colour receptors in
 the eye.

Yes.  But on paper, the color space is always CMYK.  No printing process
uses RGB, since RGB requires a light source, and doesn't work by reflection.

 ... it is often sufficient to work on an image
 in the monitor's colour space, which makes life
 much easier.

Not for serious printing.  You have to convert to CMYK if you plan to print
on paper and you want good results.

 Any RGB format can be directly displayed on any
 monitor (with small deviations maybe), unlike CMYK.

Fine, as long as you intend only to see it on a screen.  But that won't due
for printing.




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[filmscanners] Re: CMYK rant (was Digital Darkroom Computer Builders?)

2002-10-23 Thread Anthony Atkielski
Austin writes:

 MOST of what is printed on paper in the world
 DOES pass through a printer driver on a PC or
 a Mac, simply because there are MILLIONS and
 MILLIONS of homeowners and corporate PCs with
 PS on it and an inkjet or laser printer attached.

A single offset web press for a newspaper prints more in one day than
several million computer users in homes and offices will print in their
entire lifetimes.

 Er, yeah, just like the ones I, and everyone
 else, have in their home office/basement...

You are not printing five million copies at a time.


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[filmscanners] Re: CMYK rant (was Digital Darkroom Computer Builders?)

2002-10-23 Thread Anthony Atkielski
Andras writes:

 If, as Anthony said, CMYK is useful for printing
 work, then it only makes sense to use CMYK if you
 do it in the colour space of the printer AND convert
 to RGB using ICC colour profiles for display on
 screen.

If you plan to print the photographs, CMYK is useful.  It can even be useful
for printers driven in RGB, because the RGB gamut is larger than what any
printer can put on paper, and a conversion to CMYK can show you the limits
of the printed result on the screen (assuming that your CMYK conversion
parameters are _exactly right_, of course).  The reason you may not be
getting the vivid blue or rich green that you see on the screen when you
print on paper may simply be that it is outside the gamut of your printer.

 This is great, but it implies that the CMYK file
 is made for one and only one printer ...

Correct.  You always convert to CMYK with a specific printer and/or press
and/or inks in mind.  This is why you do most things in RGB (apart from the
fact that RGB has greater gamut and headroom), and convert to CMYK only when
you are producing an output file to go to the printer.

 ... so whenever a company buys a new printer
 that is different from the old ones in colour
 rendition, they have to discard (or adapt) their
 old CMYK files.

You don't keep CMYK files, anyway.  You recreate them from RGB for each use,
unless you are printing under exactly the same conditions each time.

 Also, more and more high-quality magazines etc.
 use more than 4 colours, in which case the
 entire method becomes useless.

Where did you hear that?  The vast majority of magazines and all other
continuous-tone printed matter is printed in four-color offset.  Six-color
is for special purposes and costs a lot more without necessarily adding a
lot more in quality.  The best four-color printing will look a lot better
than average six-color printing.

In any case, even if six-color printing were common, the process would still
be the same.  (I don't actually know if Photoshop handles six-color
conversions, though, as I've never had a need to prepare them.)

 My suggestion here is the obvious one -- why
 don't we all work in CIELab or XYZ and convert
 to RGB for on-screen display and CMYK for
 printing?

Mostly because of convenience.  Lab is fine for representing the gamut of
the real world, but no display or printing device can correctly render Lab
color, so there isn't much point in working in it extensively (although
Photoshop does use it internally).  The same is true for spaces like Wide
Gamut RGB.  Until and unless someone produces monitors, printers, or some
output device that can actually render the full gamut of Lab color, working
in Lab color will be of limited usefulness.

 Thus, I think CMYK is historical dead weight
 which has been obsolete at least since the ICC
 standard was created.

You're in for some unpleasant surprises the first time you become involved
in actually getting a photograph from camera to press sheet.  CMYK is
actually more important than it has ever been in the past, since so much
more is in color these days.  Even the cheapest newspapers are four-color
jobs today.


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[filmscanners] Re: Digital Darkroom Computer Builders?

2002-10-23 Thread Anthony Atkielski
Austin writes:

 I don't know who wrote what program you believe
 supports your claim ...

Any program that exhausts the direct address space, and unfortunately those
programs become more and more common as an architecture grows older.

 As you aren't a hardware engineer, it makes
 sense that you don't understand how this works,
 and the real issues involved.

I've known exactly how it works for several decades now.


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[filmscanners] Re: CMYK rant

2002-10-23 Thread Anthony Atkielski
Roger writes:

 Enclosed are typical instructions from a digital
 art web site, instructions which are required by
 a number of scientific journals.

Write to them and INSIST that they give you the exact parameters for CMYK
conversions.  If they don't know, get the names of their printers or
prepress bureaus and call them for the details.  Rest assured, someone,
somewhere in the chain has to know.

It's possible to modify CMYK after conversion to match a specific printer
even if the CMYK wasn't originally intended for that printer, but the
results are often quite inferior to a single, correct conversion to CMYK in
the first place.


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[filmscanners] Re: Digital Darkroom Computer Builders?

2002-10-23 Thread Anthony Atkielski
Andras writes:

 No. Applications get memory from the operating
 system kernel.

No, they do not.  In many systems, applications have free run of an entire
virtual address space, or nearly so, and can waste it to their heart's
content.  I've seen mainframe systems crash after a few weeks when
application systems (and the OS) exhausted 64-gigabyte virtual address
spaces.

 I have written linux kernel code myself ...

On the mainframes I've worked on, the Linux kernel would count as a small
subroutine.

 ... I know how easy it is to change things like
 this.

Indeed?  So what's your magic method for rolling out this change to, say,
ten million individual workstations located around the world?  And how do
you do this on, say, a large mainframe that cannot be taken down for any
reason, period?

 The comparison with IPv4 doesn't make sense
 because a kernel is private to a single computer
 only and can be changed at any time without
 affecting other computers ...

It's not a matter of affecting other computers, it's a matter of changing
millions of computers at once.  Even if they don't talk to each other, you
can't just throw out a new OS version one afternoon and have it installed
and running everywhere by dinner.


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[filmscanners] Re: Digital Darkroom Computer Builders?

2002-10-23 Thread Anthony Atkielski
Petru writes:

 Clearly, these guys (myself included) must be idiots.

One need not be an idiot to make mistakes.

 And we have been like that for years, it seems.

The problem has existed since time immemorial.  Apparently engineers, as a
class, have difficulty in visualizing future evolution; they see only the
present.

 And there is no hope for us.

I don't see any indications of a change.

 On behalf of the millions of stupid engineers
 of the world please accept our apologies for
 all the grief we have caused you. We promise
 not do it again.

The grief is their own, especially if they must fix their mistakes.

 Unlike other people, who can (like you, perhaps :).

Yes.


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[filmscanners] Re: Avoiding Newton rings

2002-10-01 Thread Anthony Atkielski

Paul writes:

 Really? Have you scanned the same slide in an
 anti-Newton glass mount and in conventional mount
 and compared them?

I've never scanned slides in glass mounts at all.  For 35mm, either I scan
them mounted without glass (usually plastic mounts), or I scan them in
strips without glass.  For 6x6, either I scan them in strips unmounted and
without glass (rare, because it's hard to keep the film flat), or I scan
them in Nikon's anti-newton glass holder (as opposed to glass mounts).  I've
seen no drop in resolution or sharpness with the anti-newton glass holder.



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[filmscanners] Re: Avoiding Newton rings

2002-09-28 Thread Anthony Atkielski

Paul writes:

 Even anti-Newton glass degrades the image. It's
 quite obvious with an anti-Newton glass slide mount.

It should not make a difference if it is only on the side of the film
opposite the scan head.  If it comes between the film and scan head, that
might be a problem (doesn't seem to be the case on the LS-8000ED).

I certainly am not at all keen on using any kind of powder.


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[filmscanners] Re: Avoiding Newton rings

2002-09-28 Thread Anthony Atkielski

I think I see part of the problem:  Provia is shiny on both sides--no
visible emulsion on either side.  Apparently the emulsion side is coated.
Maybe that's why the rings turn up.  I wonder why Fuji does that.

Maybe I can try always facing the convex side of the film towards the
anti-newton glass, if it isn't already quite flat, even though this means
scanning some strips backwards.  I know that some strips look fine, but
others have a definite problem with rings.  I assume that curvature of the
film or something is getting in the way.

- Original Message -
From: Arthur Entlich [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, September 28, 2002 03:10
Subject: [filmscanners] Re: Avoiding Newton rings


The cause of Newton Rings is when a space is created between two finely
polished or glossy surfaces that is a very small space equal to or a
small multiple of white light wavelengths, which then cause interference
colors via the reflection between the surfaces. The best way to avoid
them completely is to have the space between the two surfaces be wide
enough that this phenomenon doesn't occur.

One way that this has been dealt with is by using a glass which has a
very fine etched surface which creates very small contact points
between the two surfaces.  Another method is to use a very fine powder
(talc is sometimes used) to again create this airpace with minimal
contact points.

The more often the film gets very close to the glass surface, the more
series of Newton rings will develop.  Some people use a one-sided glass
carrier to allow the film to be supported by gravity by that bottom
surface, usually having the emulsion side contact that glass surface
which has more texture and is less likely to cause Newton Rings.

If one can figure another way to create a large enough airspace, Newton
Rings can be avoided.

Art


Anthony Atkielski wrote:

 I use the glass 120 film holder on my LS-8000ED because I need to be able
to
 hold the film flat, however, I have a lot of trouble with Newton rings.
The
 weird thing, though, is that some images have multiple instances of the
 rings, and others have none.  This implies that the rings are not
inevitable
 when scanning, only common ... so there must be a way to avoid them.  What
 causes the rings on some images but not on others, and what can I do to
 avoid them when preparing and loading the film?






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[filmscanners] Re: Scanning with too much resolution? (was: PS sharpening...)

2002-08-18 Thread Anthony Atkielski

Austin writes:

 But, if you have a, say, 4x6 image at 100 DPI,
 that won't get re-sampled by the browser,
 providing the window is large enough to handle
 400 x 600 pixels, right???

As far as I know, most browsers never resample an image to accommodate a
window that is too small; they just put scroll bars on the window instead.
MSIE is one of the few (the only?) that will attempt to resample images to
make them fit, unless you tell it to do otherwise (it resamples by default).

All browser will resample an image if you specify HEIGHT and WIDTH
parameters in the IMG tag that are different from the actual dimensions of
the image.  This sort of thing is strongly discouraged, however, as it can
waste bandwidth (if you are downsampling) and because most browsers do a
poor job of resampling images.

 Oh!  Where can I turn that off?

Tools | Internet Options | Advanced, under Multimedia.


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[filmscanners] Re: Scanning with too much resolution? (was: PS sharpening...)

2002-08-17 Thread Anthony Atkielski

Austin writes:

 I know you say you leave them at the scanned
 resolutions, but doesn't that put you at the
 mercy of what ever the browser does, and may
 degrade your image?

I suppose so, but I'm pretty much at the mercy of the browser and the
visitor's computer, anyway.  I gave up trying to get things just right long
ago, when it became apparent that not everyone calibrates his monitor or
worries about color depths or monitor resolutions or what-not.  I try to put
up photos that look good on my monitors and probably don't look too bad on
average computers, whatever that means, but there's still a lot a room for
my images to look bad on some systems.  I try not to stress about it.

The one consolation is that people with misconfigured systems that largely
hash my images are often quite clueless about their own computer systems and
about imaging in general, so the pictures still look good to them, as they
don't know what they are missing.

 When I have a large image in the browser,
 a lot of times it re-sizes the image, after
 it's done loading it...

MSIE certainly does this--it was a while before I realized it was doing so,
and then I turned it off.  But obviously I can't depend on others turning it
off, so I more or less have to live with the fact that my pictures may be
getting squished on some systems.  Then again, for my largest gallery I
offer two image sizes, with the smaller being the default, and I presume
that people with systems set up less than optimally are probably just
looking at the small versions, anyway (which are less likely to be
squished).




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[filmscanners] Re: Prints from scans ... are there reallydifferences any more?

2002-08-17 Thread Anthony Atkielski

Laurie writes:

 Pro labs (and particularly custom pro labs) are
 capable of working with more than just 35mm film
 formats, which most amateur one-hour mini labs
 cannot or do not accept and often are incapable
 of dealing with.

Yes.  This pro lab will develop 120-size film for $9 in two hours, seven
days a week; the cost for 135 is the same.  The one-hour place charges only
very slightly less, but it won't accept 120 at all (their machines will
handle it, but they told me that the training and extra maintenance isn't
justified by the very tiny 120 volume they'd probably do if they accepted
it).  Also, the pro lab will do contact sheets (for $26, alas!), and the
one-hour place will not.  Of course, a pro lab can also push or pull, or
cross-process, or whatever you want, if you pay the price, as you have
already observed.




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[filmscanners] Re: Prints from scans ... are there reallydifferences any more?

2002-08-17 Thread Anthony Atkielski

Julian writes:

 Maybe nothing.

 At the risk of belaboring the obvious, there
 are many pro labs whose work is mediocre or worse.
 And some one-hour mini labs can turn out very
 good prints.

Well, the one-hour print actually seems to have more pop than the pro-lab
print, but it finally dawned on me that this was a difference in paper: the
one-hour place is using Fuji Crystal Archive, which is apparently a
high-contrast, high-saturation paper, and the pro lab is using something
else (I'm not sure what--it's not marked on the back).  The 50x60 print is
very nice, though.  But for 20x30 prints or below, I'm not convinced that
I'm getting anything better from the pro lab, so I might just go with the
one-hour prints from the Frontier for that (the difference in price is
5-to-1).

 The deciding factor is usually the meatware - the
 people running the machines, and the managers who
 supervise them.

One thing I hope to accomplish by getting scans printed directly on
Frontiers or Lambdas or whatever is to minimize human intervention.  If my
files are clean and if the settings on the printers are consistent, I can
just hand the files to the lab and tell them to print exactly what is on the
files, without touching anything.  That's what I did for the one-hour lab
and the results were great.  The pro lab fiddled with the curves a bit on
the scan (a minor improvement, but nothing I could not have done myself),
but otherwise printed it as-is, also with excellent results.

If I had really bad scans that had to be manhandled into proper condition,
the results might have been much more variable and/or worse.  Apparently
these labs get a lot of rotten digital files and scans (based on what they
told me).

 How much training have they had?  How well do they
 calibrate and maintain their processes?  Do they
 set the right filtration for your film?  Do they use
 an appropriate paper?  How much time do they take
 on each order?  Will they reprint if you do not
 like the first run?  Will the second run look better?

The pro lab seems to be doing things right, since I watched part of it and
it looked okay.  The one-hour lab is certainly more casual, but the place I
prefer is staffed mostly by photo enthusiasts (like actors, photographers
hardly ever manage to live off their passion), and they take reasonable
care, even if they are not necessarily experts.


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[filmscanners] Re: Halo Effect

2002-08-17 Thread Anthony Atkielski

How old is the scanner?  Dust in scanners will create this effect.  I went
through a hundred relatively bad scans until I realized that what seemed
like slow deterioration in the scan was actually accumulating dust.  It can
happen so slowly that you don't realize it's getting worse, because you
forget how clean the scans originally were.

- Original Message -
From: Robert DeCandido, PhD [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, August 17, 2002 12:46
Subject: [filmscanners] Re: Halo Effect


Hello All,

I have a Polaroid Sprintscan 4000 (not the Plus version) and am using
Vuescan.  When I scan a slide (either Kodachrome or Provia/35mm), the
white areas (such as a building illuminated by the sun; or pages of an
open book) in the scan will exhibit a halo effect.  This appears as
a kind of a whitish or even greenish glow surrounding the white object
in the scan.

My questions are: Is anyone else seeing this or getting this effect on
their scans?  Is this something gone wrong with the scanner?  Is it
something that different scan settings in Vuescan can correct?

Using Knockout 2.0 I can correct most if not all of the halo or
after glow.  However, if someone can set me straight regarding how
to solve the problem before the scan, I would be most appreciative.

Thanks

Robert DeCandido
NYC



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[filmscanners] Re: Prints from scans ... are there reallydifferences any more?

2002-08-17 Thread Anthony Atkielski

Brian writes:

 Are the prices you quote the going rates in Paris?

They appear to be.  Even an ordinary consumer lab with overnight service
wants $3 for a roll of 135 in C-41.

 Even the most expensive labs in NYC will develop
 and contact a 120 C41 roll for far less.

There is less competition in Paris, and Europeans enjoy paying too much for
everything.

 I do quite a few stock photo sales in France
 and notice that prices aren't that high. How
 does anybody stay in business?

Well ... come to think of it, how many stock photographers _are_ there in
France?  Just the legislation in France alone is enough to kill off stock
photography (draconian jurisprudence on image rights, over-regulation of
small businesses), and there are many other obstacles besides just the price
of film processing.


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[filmscanners] Re: OT: Film processing costs (WAS: Re: Prints from scans ...are there reallydifferences any more?)

2002-08-17 Thread Anthony Atkielski

Roger writes:

 I did not know that, in spite of being an
 european myself...

Many Europeans do not know that they are making far too little money for the
work they do and are paying far too much for goods and services.  That in
itself is not surprising.  The weird thing is that, of those who _do_ know,
most think it is just fine; they seem to equate a decent standard of living
with evil, or something.  In any case, their (voluntary) loss is the United
States' gain.

 ... here in Spain I am paying 3.00 Euro
 per E-6 (or C-41) 120 processing (2 hours).

Is this a pro lab, or a so-called consumer lab?

I haven't found any non-pro labs that develop 120 here in Paris, although
there might be some, somewhere.  I certainly wouldn't mind getting it
developed for ยค3 a pop.


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[filmscanners] Re: OT: Film processing costs (WAS: Re:Prints from scans ...are there reallydifferences any more?)

2002-08-17 Thread Anthony Atkielski

Roger writes:

 Ya, I understood later, moreover seeing that
 he was talking about Paris -probably the most
 expensive city in the known universe :-))

Actually, Paris is not that high on the list.  Major American cities, Tokyo,
and London (as well as possibly Zurich) are more expensive.  This is true
even with respect to average income, although French incomes are distributed
in a very non-American way, with highly-paid management making far more than
regular employees as compared with the same ratios in the U.S. (i.e., the
lowest people on the French totem pole are paid dirt, and the highest people
are paid like royals).

But getting back to photography ...

 I really didn't know about that, not being
 involved yet in stock agency photography ...

I've heard that some agencies won't even sell certain stock photos to
customers in France, simply because the jurisprudence in France is so
unfavorable to photographers, agencies, and publishers.


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[filmscanners] Re: OT: Film processing costs (WAS: Re: Prints from scans ...are there reallydifferences any more?)

2002-08-17 Thread Anthony Atkielski

Brian writes:

 ... how much do we have to pay for medium format
 film, processing, and scanning before those
 high-end digital systems become practical?

I'm not sure what you mean by practical.  High-end digital is practical
right now, for certain applications.  However, I'm addicted to image
quality, and so unless and until digital meets and surpasses film for MF
images, I see no reason to look to digital.  Additionally, at least right
now, I'd have to go through quite a bit of 120 film to amortize the cost of
a $26,000 digital back (that provides only one fourth the image quality).

Speed is not an issue for me in either 35mm or MF, and I never burn through
film in MF and only occasionally in 35mm, so the advantages of digital are
of little significance to me, whereas the disadvantages (staggering initial
cost, immediate obsolescence, the need for an expensive infrastructure, and
lower image quality) are overwhelming.


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[filmscanners] Re: PS sharpening

2002-08-16 Thread Anthony Atkielski

Shunith writes:

 Saved by Save for Web option the file is
 now a 100 x 100 pixel @ 72dpi/ppi for a
 print size of 3.53 x 3.53cm.  How d'you
 retain your high resolutions?

By not using Save for Web or PS 7.  I still use PS 5; I've never seen any
reason to upgrade beyond that.  An ordinary Save As does not change the DPI.

 D'you save directly as a JPG without
 going thru the Save for Web?

See above.  Save for Web sounds like just another gadget to me--another
bloated feature that Adobe added in order to try to persuade people to pay a
few hundred dollars for their umpteenth upgrade of a product that already
does more than they need.


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[filmscanners] Re: Prints from scans ... are there really differences any more?

2002-08-16 Thread Anthony Atkielski

By the way, the photo I used to make the prints is at

http://www.atkielski.com/Wallpapers/images/NotreDameNight2Paper1600x1200.jpg

I worked from the original high-resolution scan, though, not from this
reduced version on the site.  The scan was Provia 100F from a medium-format
camera scanned with a Nikon LS-8000ED.

- Original Message -
From: Anthony Atkielski [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, August 16, 2002 12:13
Subject: [filmscanners] Prints from scans ... are there really differences
any more?


 (snipped)



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[filmscanners] Re: PS sharpening

2002-08-16 Thread Anthony Atkielski

Shunith writes:

 Mm well it does have it's advantages

Certainly if an upgrade provides something you need or want, no reason not
to buy it.  But remember that software companies produce upgrades because
their business model requires you to buy their products over and over again
in order to keep them in business--and not because they are trying to help
you by introducing new features.  The alternatives for software companies
are building new software products instead of bloating the old ones and
charging subscription fees to use software instead of just allowing
customers to pay for it one time; the former is very expensive and risky
compared to rehashing existing products, and the latter is strongly resisted
by most customers (except corporate customers who have already become used
to this sort of thing on mainframe systems).


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[filmscanners] Re: dpi - formerly PS sharpening

2002-08-15 Thread Anthony Atkielski

Ed writes:

 By leaving the dpi at 2700 or 4000, is the
 file size larger than it would be at
 72dpi?

No.  DPI is just a number recorded in the file; it has no influence at all
on the file size.

 Also, by leaving the dpi at 2700 or 4000
 are you creating a higher quality graphic
 file?

No.  See above.

The DPI setting of the file is just an information field, like your name or
the name of the application or whatever else gets thrown into the file
besides the image data itself (depending on the program you are using and
the settings you've selected).  This being so, you can set it to anything
you want.  Most programs that read the file ignore the DPI setting.  A few
programs look at the DPI setting when you select options like display at
actual print size or when you try to print a file.


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[filmscanners] Re: dpi - formerly PS sharpening

2002-08-15 Thread Anthony Atkielski

Paul writes:

 Just changing the dpi number doesn't change
 the size of the file; it changes the size
 (in inches) of the image.

Sort of.  An image file doesn't actually have a size in inches.  However, if
you record a DPI setting in the file, and if a program reading the file
chooses to calculate the image size by dividing the pixel dimensions of the
image by the DPI setting, then yes, within the context of that program the
image has a physical size.  Not all programs do this, however, so it's quite
an unpredictable way of sizing an image, which is why it is usually best to
ignore DPI unless you actually intend to print the file.

 Web browsers ignore it.

They appear to.  However, most browsers allow you to print pages, and they
might look at it then (I don't know for sure, because I never print pages
with my browser).


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[filmscanners] Re: dpi - formerly PS sharpening

2002-08-15 Thread Anthony Atkielski

Nick writes:

 One of the reasons for the confusion is that
 Photoshop (stupidly, in my opinion) insists
 on changing the pixel dimensions when you change
 the dpi. That, of course, will change your image.

Photoshop is designed to prepare images for print use as well as online use.
When you are preparing to print images, DPI may be important.  For example,
page-layout software like Quark XPress and PageMaker will pay attention to
DPI settings and will use them to determine how large an image will appear
on a page.


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[filmscanners] Re: dpi - formerly PS sharpening

2002-08-15 Thread Anthony Atkielski

Austin writes:

 Where do you set the DPI of the scan?

The DPI of the scan in the image file is set by the scanning software that
creates it.  The Nikon scanners I use routinely set the DPI to the actual
DPI used to create the scan (usually 2700 or 4000, the two resolutions I
most often use).

If I want a different DPI set in the file, I change it in Photoshop with the
Image Size dialog, taking care to uncheck the Resample box so that
Photoshop does not try to resample the file to match my new DPI choice.




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[filmscanners] Re: PS sharpening

2002-08-12 Thread Anthony Atkielski

Stan writes:

 What if the image is being prepared for a
 website?

The procedure is the same, but the final size for the image is of course
quite small compared to the original scan.

I do set the JPEG compression a lot higher for Web use than for print use,
as download time is important for Web images, and quality is much less of an
issue.

 Of the three steps--resampling to get the
 right size and 72 dpi, converting to JPEG
 format and sharpening--what is the ideal order?

Saving as JPEG should always be the last step.  (However, my images are
archived primarily as low-compression JPEGS; this isn't a problem as the
vast majority of my final uses involve downsampling the image, anyway.)

Conversion to 72 dpi doesn't do anything, so you can skip that.

Normally I open an archived image and downsample/unsharp in steps until I
reach my final size, then save that.  For the Web, I crank up the
compression to make the file smaller (usually no more than 6 of 10 in
Photoshop 5.x for large images, where quality is presumably more important
than download volume, and often 3 for small images, where the inverse is
often true).

 Should sharpening still be the very last step?

Always.  Sharpening degrades the image, so you don't want to do it until
you're done with everything else.  And I never sharpen scanned images for
archiving; if they need sharpening, I'll do that each time I open them back
up for other uses.  You never know when a specific use might require the
image without sharpening (an image without sharpening is cleaner).


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[filmscanners] Re: PS sharpening

2002-08-12 Thread Anthony Atkielski

Alex writes:

 what would be preferred policy of image
 offering for the public ?  I mean small GIFs
 as thumbnails linked to JPEGs of certain
 resolution of JPEG only approach ?

It depends on your intended audience and the type of connections and
machines you anticipate that they will have.  Designing for unsophisticated
Web surfers with slow connections and small monitors is different from
designing for seasoned surfers with broadband connections and huge monitors.

As a general rule, keep in mind that most people have 800x600 screens in
24-bit color, with dial-up connections of 40 Kbps or so.

Thumbnails are fine, if they are very small (read: highly compressed) and
not too numerous on a single page.  I used to use them, but as the number of
images increased, it started taking a long time just to download the
thumbnails, so I dropped them--but much depends on your site design.

As for full-sized images, something under 800x600 is probably best.  You
need not design for 640x480 monitors--hardly anyone still uses those.  And
Web-safe colors or GIFs are a waste of time today--full-color 24-bit JPEGs
are fine (and preferable for photos in any case), and they download faster.

 Also, what would be suitable JPEG resolution
 to be allowed for image download from web
 site achieving two goals: good on-screen image
 quality, optimal size and resolution for fast
 download and not suitable value usage ...

Probably between 640x480 and 780x580 or so.  Most monitors are set to
800x600 today; quite a few are set to 1024x768 as well.  700x500 is a nice
size that still doesn't allow much in the way of printing on paper (although
it can be stolen for other Web use).  Using a lot of compression degrades
images enough to make them difficult to print, too, although it also
influences display quality--high compression speeds downloads, too.

 I thought about something like VGA size (640x480)
 or probably SVGA (800x600), what about resolution ?

Yes, those work.  If by resolution you mean DPI, you can forget about
that--DPI is meaningless for Web display.  If you really do wish to set a
DPI, though, set it to 2700 or 4000; if anyone downloads the image as-is and
tries to print it in a word-processing program (a common way of using stolen
images), the high DPI will cause it to reproduce at a very tiny size, and
many people stealing images in this way will not be able to figure out how
to fix that, thereby preventing them from using the stolen image.


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[filmscanners] Re: PS sharpening

2002-08-11 Thread Anthony Atkielski

Al writes:

 Maybe I have missed it in an earlier post but, if
 you are using your normal technique of halving the
 image size, what are the unsharp mask settings you
 use as a default?

Strength of 98, radius of 0.7, threshold of 2.  Of course, this is a highly
subjective setting.  I do note that very small images usually require less
unsharp masking than very large images to get visually similar results, but
since the distinctions are small, I usually use this one setting for
everything.  If a small image looks too pixellated after the last downsample
and unsharp masking, I undo the unsharp masking.


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[filmscanners] Re: PS sharpening

2002-08-11 Thread Anthony Atkielski

 I find that the first sharpening, that applied
 to the image from the scanner, needs much larger
 strength and radius values than the second and
 later sharpenings. Do you turn on sharpening in
 the scanner?

No, I don't.  You never know when you'll need an image _without_ sharpening
(remember, sharpening degrades image quality).

I don't see much change in the initial sharpening, either, unless it's a
really good scan (read:  a scan of an image shot on a tripod, on slow film,
that really does show detail in individual pixels).  Subsequent 2x
downsamples always show visible improvement when sharpened, though.

 I haven't tried that yet, since my experience
 with in-camera sharpening (consumer dcams) is
 that it has too low threshold setting and aggravates
 noise something fierce, but maybe scanner sharpening
 isn't so obnoxious...)

I don't like to sharpen images even before I get them into Photoshop.  I
prefer that the raw image be free of sharpening, so that I get as much
quality as possible in that raw image.


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[filmscanners] Re: PS sharpening

2002-08-10 Thread Anthony Atkielski

Maris writes:

 Brian said the file size was reduced, so there
 was apparently resampliing (downsampling).

Or the amount of information in the file did not increase.

In any case, if one proceeds as he describes (changing the dimension of the
image to 11 inches in Photoshop), the results are as I describe--I tested it
to be sure; perhaps he left something out in his description.

 Your hypothetical of entering 11 inches in
 the new dimension, with the resampling box
 checked or unchecked, would not result in
 PS computing 11 inches x 4000 ppi.
 PS would reduce the ppi proportionately
 in either case.

Try it.  If you simply enter a new dimension in inches, the size in pixels
will increase or decrease as required to produce that dimension ... at 4000
ppi.


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[filmscanners] Re: PS sharpening

2002-08-09 Thread Anthony Atkielski

Brian writes:

 If I scan a 35 mm slide or negative at 4000
 dpi in a Nikon Coolscan 4000 and I want to make
 a print in Photoshop, I alter the long dimension
 to 11 inches (the short dimension ends up at
 whatever to retain the proper dimensions).
 Since this usually ends up in a file size that is
 smaller than what it was originally, does this
 mean the image will be downsampled?

No.  By default, when you enter a dimension in the Image Size dialog box,
Photoshop will resample the image to match the dimensions you've given.  In
the case of pixels, PS simply resamples up or down to match the new pixel
dimensions.  In the case of a physical dimension like 11 inches (entered in
the Print Size portion of the dialog), however, PS resamples up or down to
match the new physical dimension _after_ calculating the number of pixels
required by multiplying the physical dimension by the number of pixels per
inch.  When you open a scan from the Coolscan, the ppi is set to 4000 (the
scanner's resolution); and the number of pixels in the image corresponds to
the number of pixels in a 35mm frame scanned at 4000 ppi, or about 5669x3779
pixels.  If you now enter just 11 inches as the new dimension in the
resizing dialog, Photoshop will compute 11 inches x 4000 ppi = 44000 pixels,
and will upsample the image to this size.  In general, this is not what you
want.

You should _first_ uncheck the Resample box in the dialog, then enter the
new ppi you want for your print size, then recheck the box and enter the
print size you want.  For example, you could first change the ppi to 300 (if
that's what you want on the final print), then enter the desired print size.
With a ppi of 300 and a print size of 11 inches, PS will _downsample_ from
the size of the 4000 ppi scan (because fewer pixels are required).

 If the answer is yes then how do I downsample
 in powers of 2?

Change pixels to percent in the upper portion of the Image Size dialog
box and enter 50 (percent).

 ... do I go 4000 to 2000 to 1000 to 500 to 360,
 sharpening at each step as you suggest?

That's what I do (except I'd skip it on the last downsample, because the
step from 500 to 360 is too small and sharpening at that point might look
too messy--sometimes I try it both ways on the last step and pick what looks
best).

In theory you can also downsample in one step and unsharp mask once, but
then you must calculate the proper radius based on the number of pixels lost
and unsharp mask up front.  For example, if you downsample in one step of
500%, you'd use a radius of 4.9 pixels or so.  I don't do it this way so I'm
not sure how it turns out (it's easier to unsharp mask in steps afterwards,
and look at the partial results after each step), but you can always try it.




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[filmscanners] Re: [filmscanners_Digest] filmscanners Digest for Fri 9 Aug,2002-Firnware

2002-08-09 Thread Anthony Atkielski

TH writes:

 What is firmware?

Software that rarely changes.  Usually it is recorded in non-volatile but
erasable memory within a device at the factory, and since it is relatively
fixed, it usually appears as hardware to the user (that is, the influence
of the firmware is seen as hardware behavior).  If the firmware must later
be changed, usually a special program is used to do it, and this program
issues commands to the hardware to erase and replace the firmware with
something new.  To the user, this appears to change the behavior of the
hardware; but it's actually a software change (in software that is rarely
changed).

Thus, part of the behavior of a scanner's hardware when it is addressed by
a scanning program such as VueScan or NikonView is actually determined by
firmware in the scanner itself.  If you change the firmware, the hardware
behavior appears to change.


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[filmscanners] Re: PS sharpening

2002-08-09 Thread Anthony Atkielski

Robert writes:

 Excuse my ignorance but what is the logic doing
 it this way instead of resample it directly to
 the resolution you want?

It seems to give a better final result, as opposed to one single large
downsampling step, although I have not been able to rigorously verify this.
If you downsample from 1000 pixels to 10, for example, you get a blur, even
after sharpening.  If you downsample in multiple steps of no more than 1/2
at a time, the result at the end seems a lot more recognizable.

I think this is because steps larger than 1/2 tend to lose information from
intermediate pixels.  If you downsample in steps and unsharp mask each time,
details tend to leave traces in adjacent pixels that survive the next
downsampling step.  The result is a final image that contains more pixels
that resemble important details of the original.  It's actually probably
less accurate than a single-step downsampling, but to the eye, it looks more
like the original, because key details are more likely to survive (in
exaggerated form, but that's what you need to make them obvious).




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[filmscanners] Re: PS sharpening

2002-08-09 Thread Anthony Atkielski

David writes:

 Just to clarify here: the sharpening with
 radius of 4.9 pixels or so is applied _before_
 downsampling by 500%, obviously. Right?

Yes, it would have to be, otherwise the information it needs would be gone.

However, I haven't actually done this, so I'm not sure of the details.

It seems that, from a mathematical standpoint, there should be a one-step
equivalent of the multiple-step process that I use, but I've always been too
lazy to try to figure it out.  Additionally, I suspect that any one-step
process would require some degree of calculation for each image and each
downsample ratio, and I'm not really in the mood to do that each time I
downsample.  The multiple-step process is easier and seems to give the same
results.

 As I understand it, there should be N + 1
 sharpening operations for N downsampling
 opertions.

The other way around:  N-1 unsharp masks for N downsamples, unless the last
downsample is very close to 2x itself (try it both ways and pick whichever
looks better for the last step).

 In some sense, the first N sharpening operations
 have a different purpose than the last: they're
 to make sure the downsampling retains the detail
 (and contrast) you want.

Yes.  By unsharp masking after each downsample, you exaggerate detail.  The
traces of this exaggeration survive into the next step.  The net result
after several steps is that details that normally would have gone away in
the downsampling still have left tiny traces in the final image.
Technically, the image is flawed because of this, because the details are
exaggerated far more than would be mathematically appropriate--but since the
image is being seen by human eyes, this exaggerated detail is exactly what
is needed to give an impression of greater detail and sharpness.

 The last sharpening is to make the final
 image look good.

Exactly.  The intermediate unsharp masks just help to carry important detail
through the process; only the last unsharp mask is purely aesthetic.  Or at
least that is my opinion; like I said, I've not tried to come up with a
mathematical proof.

Try downsampling through a 100:1 ratio in steps, and then in one pass, and
you'll see that doing it in steps gives you a final result that looks like a
tiny, sharp version of the original, whereas a single step just produces a
blur.




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[filmscanners] Re: PS sharpening

2002-08-08 Thread Anthony Atkielski

Sharpening will not recover lost detail.  It only creates an illusion of
sharpness, and it is very easy to overdo, so beware.

- Original Message -
From: Alex Zabrovsky [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, August 08, 2002 23:53
Subject: [filmscanners] RE: PS sharpening


Thanks, will look at it.
The sharpening I meant originally is intended to be implied on GEMed images
with high setting such as 3 and 4, since there is obvious sharpness impact
at this GEM settings.
Otherwise, I don't sharpen either.

Regards,
Alex Z

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Maris V. Lidaka
Sr.
Sent: Wednesday, August 07, 2002 6:20 PM
To: [EMAIL PROTECTED]
Subject: [filmscanners] Re: PS sharpening


Most people don't sharpen immediately after the scan (though some have
suggested an immediate MINOR sharpening to remove artifacts introduced by
the scanning process), so at 2900 dpi and 1000 dpi don't sharpen.

When you are done with the image and it's ready for print or the web, then
you sharpen, and at that point it depends on the resolution of the image and
it's content.  I know of no set rules or guidelines.

Bruce Fraser has some excellent articles on sharpening at
http://www.creativepro.com/author/home/0,1819,40,00.html

Maris

- Original Message -
From: Alex Zabrovsky [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, August 07, 2002 11:55 AM
Subject: [filmscanners] PS sharpening


Hi.
I would be interested to know how people use Unsharp Mask in PS to make the
images sharper, especially following high settings of GEM (produced by Nikon
IV ED)
I'm still trying to establish the range of best Unsharp Mask settings for
different cases (scenic, portraiture and other kinds).
Let's assume the scanning resolution is 2900 dpi  and 1000 dpi.

Regards,
Alex Z



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[filmscanners] Re: Disabling right-click, etc. (was: Web homepage writing software)

2002-08-04 Thread Anthony Atkielski

David writes:

 You've never ceased to amaze and dazzle me
 with your limitless wisdom and knowledge of
 this planet - and humanity in general.

Thanks.

 I presume that you must be at least an
 octogenarian to have amassed such a bottomless
 pool of enigmatic-yet-pragmatic information/advice.

I don't normally discuss my age, so I'll leave you to your speculations on
that point.

 I would like to take this moment in time  space...
 to salute you for being *the* undisputed cyberspace
 hydrant-of-esoteric-knowledge that you are!

Thanks!

 P.S.--  What do you do with Ansel Adams?

Ansel Adams is dead, so nobody does anything with him.  A fine photographer
during his lifetime, though.


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[filmscanners] Re: Disabling right-click, etc. (was: Web homepage writing software)

2002-08-04 Thread Anthony Atkielski

David writes:

 Please allow me to describe a certain rascal
 that I've stumbled onto.  He seems to have an
 exaggerated opinion of his *own* opinion.

Things are not always what they seem.  Does this rascal have elaborate
protection mechanisms on his site to protect the inestimable value of his
brilliant photographs?


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[filmscanners] Re: Disabling right-click, etc. (was: Web homepage writing software)

2002-08-04 Thread Anthony Atkielski

Gregg writes:

 I have many images and I can't decide which
 ones are worthy to be shown to the public. Could
 you please take a look at them and with all
 your wisdom let me know which ones are good
 enough to be stolen.

I'm no more qualified to determine that than anyone else.  Besides, from an
economic standpoint, the best people to ask are your potential buyers.

Additionally, you didn't provide a URL, so I assume your request was
rhetorical.


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[filmscanners] Re: film departing soon

2002-08-04 Thread Anthony Atkielski

Arthur writes:

 Perhaps eventually a standard will be made
 and one will buy rights to use a seal or
 logo that is registered and authorized for
 people using materials tested to meet that
 standard.

I can't go along with that.  I've never seen a case of restricting trade in
this way that was beneficial to the consumer, in any domain.


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[filmscanners] Re: Disabling right-click,etc. (was: Web home page writing software)

2002-08-04 Thread Anthony Atkielski

Arthur writes:

 The ONLY absolutes I see here are that an
 artist's work is his own to do as he pleases,
 and that there is no moral authority to take
 or copy other people's creations even if it
 is easy to do so, unless the artist has
 agreed to it.

Quite true, but the practical reality is that there is no way to prevent
people from stealing images off a Web site.  Either you do not post what you
do not want stolen, or you post images and accept that they will be stolen.
Posting images for everyone to see, and then trying to prevent them from
seeing them with elaborate protection mechanisms (and make no mistake, there
is no way to protect images without simultaneously preventing them from
being seen), doesn't make much sense.

Publishing images on a Web site is like publishing them in a magazine:  Some
people will cut pictures out of magazines and tape them to their walls,
rather than buy expensive prints.  But you usually tolerate the magazine
publication in exchange for the exposure, knowing that many people will not
be satisfied with just a cut-out magazine clip and/or will be too honest to
cheat that way, and will buy real prints.

I know that people may steal images off my site.  Heck, for personal use, I
explicitly authorize the downloading of images (indeed, the wallpapers
section is _designed_ for that).  I suppose I'm losing revenue in some vague
theoretical way by doing so.  However, I also know that big-money buyers
will still ask me for permission and pay me money for that permission when
they want to use an image for something more serious.  It's a trade-off.
Nobody would ever buy my pictures at all if they could not _see_ them.


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[filmscanners] Re: Disabling right-click, etc. (was: Webhomepage writing software)

2002-08-04 Thread Anthony Atkielski

David writes:

 I don't know where y'all come from...but I'm
 in a post-industrial community that would
 cheerfully settle for 2nd best...when
 push-comes-to-shove.  The ramifications of
 this are endless.  They would be *thrilled*
 to settle for whatever they can print off the web.

Then either you must not post anything at all on your Web site, or you must
accept the lost revenue when the images you post to the site are stolen.
There are no other options.




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[filmscanners] Re: Disabling right-click, etc. (was: Web home page writing software)

2002-08-03 Thread Anthony Atkielski

Shunith writes:

 Disabling right click will not stop any of
 the ones you mention from using your pix
 if they so choose.

I know.  I don't disable anything.

Furthermore, it seems a bit egotistical to me when photographers go to
extreme lengths (downloadable ActiveX controls and plug-ins, etc.) to
prevent people from stealing their work.  Has it occurred to them that their
might not be worth stealing in the first place?  There are plenty of cats,
dogs, sunsets, breaking waves, distant mountains, nudes, and touristy photos
in the world; most are not worth protecting, since they are a dime a dozen
anyway.

 So, what's your point?

That it's not something to worry about.  Don't put anything on your site
that you absolutely do not want stolen under any circumstances, and accept
that there will always be someone stealing the images that you do put on the
site.




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[filmscanners] Re: Disabling right-click, etc. (was: Web homepage writing software)

2002-08-03 Thread Anthony Atkielski

David writes:

 But it's not quite that easy nor as cut-and=
 dried as the above.

There aren't any other options.  Anything you put on the site is likely to
be stolen.  Anything you do not want stolen should not be put on the site.

 For example, you've just thumbed-your-nose at
 the state-of-the-art in professional event
 photography.  On-line proofing is currently
 all the rage in that area...especially for
 out-of-town customers.  In that realm, you
 can't sell what you don't present.

True, although I've been in exactly that situation and very recently had
some of my images stolen just from the online proofs (which are good enough
for small reproduction sizes, even if they are tiny and fuzzy).

 One technique that seems necessary is to
 present lower rez watermarked images.

I've considered it; I haven't gone that far yet.  Given that some of my
images have been swiped recently, perhaps I'll have to resort to that.




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[filmscanners] Re: Disabling right-click, etc. (was: Web home page writing software)

2002-08-03 Thread Anthony Atkielski

Preben writes:

 I would be interested in knowing which photos
 ARE worth protecting.?

The ones that are worth money.

 As far as I know, in the finest museums of the
 world (for what it is worth), you may stumble across
 (quote) sunsets, breaking waves, distant mountains,
 nudes (unquote) .

I've hardly ever seen such things in museums, except for nudes, and that's
only because nudes are a euphemism for soft-core pornography.

For every such photo in a museum, there's are thousands and thousands of
similar photos for sale at bargain prices, or simply free for the asking.

 Should we perhaps leave it to the *eyes of the
 beholder*, instead of stooping to sweeping
 generalisations.

Since you cannot read the beholder's mind, how will you know which images he
will steal, and which images he will not steal?

 All copyrighted material deserves protection against
 commercial pirating if the originator so wishes...

Of course.  But originators with an exaggerated opinion of their work and
draconian methods of protecting it won't have too many people viewing their
masterpieces.




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[filmscanners] Re: Disabling right-click, etc. (was: Web home page writing software)

2002-08-03 Thread Anthony Atkielski

Julie writes:

 Is it egotistical to try to prevent someone
 stealing images that a photographer has spent
 time and money creating?

Not at all, but it is often egotistical to actually believe that anyone
wants to steal them.  I've seen photos on many photo sites that the
photographer couldn't pay me to display in my home; I certainly would never
have any urge to buy or steal them.

It's just interesting to see how much many photographers overestimate their
own talent.

 For photographers making a living solely from
 photography stealing images can be and is
 a problem.

Really?  How much are they losing from online theft?




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[filmscanners] Re: Web home page writing software

2002-07-31 Thread Anthony Atkielski

SD writes:

 ... notepad is the best... but is it worth
 th hassle and the learning curve?  Doubt it ...

There is no hassle.  It takes a few hours to get used to writing HTML.  You
can learn it in an afternoon.

Learning Dreamweaver might take days or weeks.  And the cost of a full copy
of Dreamweaver would pay for the hosting of your Web site for nearly four
years.




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[filmscanners] Re: Web home page writing software

2002-07-31 Thread Anthony Atkielski

Paul writes:

 But look at most professional web sites. They're
 full of nested tables, not to mention frames, plus
 little fragments of javascript for special
 effects, hit counters, etc.

No, they are not.  Professional sites contain only the HTML required to do
the job; amateur sites and wannabe sites contain a ton of code that usually
only partially works and requires a great deal of time to download.  In
particular, sites created by amateurs and wannabes using web-design software
contain an order of magnitude more code than necessary and almost never work
as they should; they are a bloated, unsightly mess that can scare away at
least as many visitors as it attracts.

As for very high-traffic commercial sites, they usually have full-time staff
to write their HTML.  But they still write all or most of it by hand.

 You can write that stuff if you want, but I wouldn't
 recommend it to most people.

I don't have to, and neither does anyone else.  You don't need little
fragments of Javascript, or special effects, or hit counters in order to
make a site useful and interesting.  All you need is content.

 The largest Web sites on the Internet are written mostly by hand in HTML.
 It's not difficult at all.  My own site is entirely hand-written.

Where did you get that idea?

By looking at the code.  It's also the only way to get pages to work right
across a wide variety of environments and browsers.  Additionally, I used to
work for a company that was very well placed to know what was running on
these large sites.

 When I do a View Source on any major web site
 (Microsoft, Yahoo, Amazon), it's obviously not
 hand-coded.

Those are exactly the sites I'm talking about.  Hand-written, for the most
part, for the reasons stated above.  It also reduces download time to write
only the code necessary, not whatever junk a web-design program puts into
the page.

The front page of Yahoo is very carefully handwritten in order to make sure
that it downloads as quickly as possible--you'll note that the site is
amazingly free of special effects, animations, and the like as well.  Google
is the same way.  But even complex sites like Microsoft's site are largely
hand-written.  It's easier than trying to find a web-design program that
will do the same thing, and do it well, and make it small.

 Many of the pages are dynamically generated based
 on queries, cookies, etc.

Using scripts that are handwritten.

There are telltale signs that something was written with web-design
software.  Such pages are usually bloated with code and take a long time to
download.  They include too many special effects for their own code, with
every link and graphic flashing and blinking and moving.  They tend not to
work on many browsers.  The code itself is usually a mass of
incomprehensible junk when you examine the source.

 It may not be done with something cheap like
 FrontPage, but when you see endless reams of
 nested tables with no indenting, you know
 you're dealing with HTML that was generated
 by software, not by hand.

No, you don't.  I've written stuff like that by hand.  It's not hard.  It
may or may not be indented, depending on how it was edited.  HTML generated
by scripts often does not have pretty indentations; but the scripts are
handwritten, too.

 Not erroneous links.

Bad links are human error.

 And if you are doing something like a photo
 album by hand, you have to make sure that you
 create all the thumbnail images by hand, given
 them names related to the image names, and make
 sure that none of your HREFs are misspelled.

So?  It's not difficult.

 If you use an automatic tool, you wind up with
 HTML that's guaranteed to be correct.

For someone with more money than time or competence, then yes, a web-design
package might be a good choice, as long as the site is not too complex.  For
large and complex sites, or high-traffic sites, or for persons on a budget,
handwritten HTML is better.

 Well, I don't want to get into a flame war
 with you.

No flames intended.  I just don't like to see misinformation spread around.
It's easier to write your own HTML with a text editor than it is to use an
expensive web-design program.

HTML is easy to learn.  It takes very little to build a Web site by hand,
and it saves you time and money.  You can learn enough to build your first
Web page in about fifteen minutes.  And if you ever build a really big or
busy site, you'll probably end up writing it by hand, anyway, so knowing
HTML always comes in handy.

 I do know HTML, and have created simple web
 sites with text editors.

Then I'm surprised you'd recommend web-design junk, or compare HTML to a
programming language, since it is nothing of the kind.

 And I think your recommendations are lousy advice
 for someone else who wants to create anything
 beyond a very basic web site with very few links,
 the simplest page layout, and no dynamic
 content.

But that's EXACTLY the kind of site that will attract the most visitors.
People look 

[filmscanners] Re: Web home page writing software

2002-07-30 Thread Anthony Atkielski

Paul writes:

 As long as it produces the correct results in
 a web browser, who cares?

True, but it won't.  The junk generated by web-design software contains
mountains of code, often lots of scripting as well, and if you don't change
it carefully, it will break; the results will _not_ display correctly.

It's far easier to write the HTML from scratch, and skip the web-design
software.  This is how most seasoned webmasters do it, anyway.  It's faster
and less hassle that way.

 I've seen C++ compilers generate hundred-kilobyte
 programs that I could write in a hundred bytes
 using assembly language.

HTML is not a programming language.

 Given that 100K of RAM costs two cents, and 100K
 of disk space costs a hundredth of a cent, I'll
 write in C++. And given that a 50KB page can
 load in 8 seconds via dialup and a fraction of
 a second via broadband, I'll save the much longer
 programming time and use Dreamweaver.

A lot of visitors won't wait eight seconds for the page to download; they'll
just go elsewhere.

And as I've said, HTML is _not_ programming.  The two are not comparable.


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[filmscanners] Re: LS-2000 and HC film

2002-07-15 Thread Anthony Atkielski

Use the supplied film strip adapter instead of the automatic strip loader.

- Original Message -
From: Francoise Frigola [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, July 14, 2002 20:43
Subject: [filmscanners] LS-2000 and HC film


I am attempting to scan film strips on High Contrast films.

The film itself is transparent.

Many images have very little black in them.

In many cases the scanner does not recognize that there are several images
on the strip.  It goes to the second one and sees only one image.

What area should I make black on the film, besides a separation between each
image?

Thanks,

Francoise Frigola

Inkjet Prints in Multiples ~ Sculpture
www.pe.net/~franou/




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[filmscanners] Re: Is anybody there????

2002-07-08 Thread Anthony Atkielski

That would be dishonest and unkind.

- Original Message -
From: Laurie Solomon [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, July 07, 2002 16:28
Subject: [filmscanners] RE: Is anybody there


Come on Anthony, you can do better than that. The very least you could do is
cause Thomas to think by giving him the paradoxical response of No. :-)

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Anthony Atkielski
Sent: Sunday, July 07, 2002 2:35 AM
To: [EMAIL PROTECTED]
Subject: [filmscanners] Re: Is anybody there


Yes.

- Original Message -
From: Thomas B. Maugham [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, July 07, 2002 02:27
Subject: [filmscanners] Is anybody there


Is anybody there?



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[filmscanners] Re: Is anybody there????

2002-07-07 Thread Anthony Atkielski

Yes.

- Original Message -
From: Thomas B. Maugham [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, July 07, 2002 02:27
Subject: [filmscanners] Is anybody there


Is anybody there?



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[filmscanners] Re: Black and white scans onLS4000EDandotherissues

2002-06-30 Thread Anthony Atkielski

I have not had any focus issues with any Nikon scanner (I have three).

- Original Message -
From: Bruce M. Burnett [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, June 30, 2002 05:18
Subject: [filmscanners] RE: Black and white scans onLS4000EDandotherissues


Austin,
You assume that everyone with a Nikon scanner has depth of focus issues.
But not me nor the three others that I personally know who use them.  No
depth of focus problems.  I am not saying that there isn't an issue with
depth of focus, but that some units(or maybe we just have flat film)do
not exhibit the problem.
Bruce Burnett





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[filmscanners] Re: OT: WARNING: Epson 7600/9600 ink use

2002-06-27 Thread Anthony Atkielski

So did you actually buy the printer?

- Original Message -
From: Arthur Entlich [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 27, 2002 04:27
Subject: [filmscanners] OT: WARNING: Epson 7600/9600 ink use


I just posted this to comp.periphs.printers, and I know it is off topic,
BUT, since many filmscanner users might be considering the new lower
priced Epson wide carriage printers, I thought I'd provide this heads up.

Boy, was I excited to see the price on Epson's 24 wide printer drop by
thousands of dollars with the introduction of the 7600 (list $2995 US)
versus the older 7000 dye based model (list $3995) or the 7500 pigmented
model (list $4995 US).

Not only that, but the 7600 has a new set of even better pigmented inks
available, a higher resolution inkhead, etc. and they OFFER SWITCHABLE
BLACK INKS for both matte and glossy (photo) paper use with these
pigmented inks!

WOW, what a deal.

That was until I started looking into the ink situation.

The 7600 uses 110 ml ink carts (up to seven of them), and each has a
lovely intelledge smart chip in it, which keeps track of all sorts of
interesting stuff.  Each cartridge costs $70 US or $106 CAN plus tax.
  The new 9600 which is a wider carriage version (44 inches wide) can
use either 110 ml or 220 ml carts).

Since these printers use the Intellege chip, they are not refillable,
and besides, Epson owns the rights to their new ink technology.  The
only problem with these new inks is that the formula of the black ink
makes it either work well with matte papers or glossy/photo papers, so
you need two different types to provide a full range of printing abilities.

BUT, no problem...  you can switch between the two carts easily (it
takes about 10 minutes according to Epson),  One of the features of the
Intellege chip technology carts is that they have a valve that shuts
down the cart to keep it sealed when not in use, AND, the cartridge
keeps track of exactly how much ink is in it via the chip. So, at least
there are some advantages to this chip system, right?

So, I take the black (glossy) cart out, buy a matte black cart (about
$70 US for the 110ml version) and install it... simple, right?

Well, unlike the consumer models which have the ink reservoir sitting
right on top of the heads, the larger carriage printers (starting with
the Epson 3000) use a series of plastic tubes to feed the ink from the
ink reservoirs to the heads. Obviously, if you switch types of inks, you
need to flush out the ink in the head and those tubes so the new type of
ink is ready to be used.

OK, so the black head is flushed  so the new ink is used.  It turns out
that the heads also carry some ink, plus the tube, so it takes about
25-32 ml of ink to be pushed through the system to clear the old ink out
and start the new ink.  Well, that's a LOT of ink from a 110 ml cart,
about one quarter, so you would lose about $18 US or $27 CAN (plus tax)
ink for a switch one direction. Switching back to the original black
would double these costs.

So, you say, OK, I can swallow that, or make my client pay or
whatever... not so horrible.  BUT BUT, Epson didn't design the
printer to work this way.  OH no!  Epson likes selling ink a lot, they
make a lot of money selling ink, and they want to keep printer prices
down, so more people buy them, so they can .. sell MORE INK!

Apparently, Epson has designed their 7600 and 9600 printers to use a
system similar to when the printer first is loaded with cartridges when
you buy it (which uses up about 39 ml of ink per color, or about 273 ml
of ink) when changing between black cartridges.  Inotherwords, it not
only purges the black line and head, it also purges ALL THE OTHER COLOR
CARTRIDGES TOO to a total of between 180ml to 215ml of ink (according to
Epson's numbers), or $114-$137 US or $173-$207 CAN (plus tax!) per
switch.  Or, for a full circle switch over (black to matte black to
regular black again) of $228-274 US or $346-$414 CAN (plus that tax,
again) just to run one print in the matte mode if you have the regular
black in the printer and want to return it afterward.  I do not know
many clients that I can add that type of fee onto their set up costs [;-)]

Now, I know that companies like Epson have shifted from larger profit
margins from the printer sales, to higher profits on ink, by making 3rd
party inks difficult or impossible to use with the Intellege
technology, but doesn't it seem a bit self-serving to advertise these
printers as providing switchable black inks as an answer to the
problem of their new inks not being able to handle all substrates well,
when the only way to use that feature is to waste HUNDREDS of dollars
worth of ink just to switch between the black inks.

I'm not an engineer, but I can't believe the cost of making the black
cartridge and head assembly having its own unique purging sequence would
be so great as to have made it not worthwhile to incorporate under the
circumstances.  Heck, all the 

[filmscanners] Re: Windows Memory Mgt.

2002-06-12 Thread Anthony Atkielski

Simon writes:

 Where did you get this information?

From Microsoft.

Besides, you can see it for yourself if you look closely at XP; much of the
OS still carries the names of used by its direct ancestors.  MS has hidden
quite a bit and has crippled a few functions so that you have to pay for
more functionality, but the basic OS is the same.  That's why XP is far more
stable than any other home operating system from MS (it easily whips all
the Windows 9x flavors and their relatives).


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[filmscanners] Re: Windows Memory Mgt.

2002-06-12 Thread Anthony Atkielski

David writes:

 All very true, but NT/2k/XP give the user
 a single, flat 2GB address space, which is
 getting a bit cramped in this day and age
 of 4000dpi MF scanners.

The 32-bit hardware severely limits addressing beyond a 4 GB boundary.  If
you want to handle more than 4 GB cleanly, you'll have to go to a 64-bit
architecture (which is coming, but isn't quite here yet).

 Hmm. I wonder if that can be gotten around
 by having a thread object with it's own
 address space for each image.

The big problem is having a convenient way to address RAM directly.  32 bits
= 4 GB.  Very much like the problem with MS-DOS and 16-bit addressing, which
required that everything be chopped up into 64K chunks.


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[filmscanners] Re: Scene brightness and CCDs

2002-06-11 Thread Anthony Atkielski

Todd writes:

 Seems to me a good S curve algorithm could
 juice the midtones and still keep the highlights
 and shadows from from blowing and blocking, no?

Absolutely, and an S curve is what I had in mind (although I don't actually
know for sure what sort of adjustment the cameras are performing).  In order
to give images more pop, the processing would logically increase the
change in luminosity in the midtones, where most of the information in a
properly-exposed image would be, and sacrifice detail in the highlights and
shadows.  A plain straight-line change would work okay, but then highlights
and shadows would be abruptly cut off, and they would contain more detail
than necessary for most images up to the cutoff points, to the detriment of
midtones.

In other words, I'd expect image-processing software to emulate the same
type of curve that is built into film emulsions, with a steep midsection and
a toe and shoulder at the extremes.  Of course, same curve = same
drawbacks, so highlights and shadows will suffer.  But unless you have a
magic display device that can actually display a very wide gamut and a very
broad dynamic range, you have to compress something.

Some digicams may be overdoing it, by forcing images into the
lowest-common-denominator gamut, which would be something like sRGB.  I
guess this is understandable for the consumer cameras, but I should hope
that the pro cameras are using something wider, or even allowing the user to
select a space for rendering of an image (including raw data from the CCD,
preferably, which would mean no manipulation at all).

Even better would be to do this all in the analog realm, with the raw output
signals from the CCD, rather than trying to adjust after conversion to
digital data, because some resolution will be lost in the conversion, unless
it is extremely precise internally (18-20 bits, for example).  But that
would be expensive, inflexible, and prone to misadjustment and environmental
influences, so I doubt that it is being done.

 Will the RAW captures from these cameras hold
 detail at the extremes under conditions of large
 brightness ranges? How many stops of brightness
 for the RAW captures?

I don't know.  It depends what RAW means for a given model of camera.

Also, even the pro cameras today are using CCDs that are too small to
provide the full benefits of CCD capture.  The smaller the pixel, the less
charge you can hold on a given photosite, and the smaller the dynamic range
of the CCD.  You need big pixels to provide lots of range, and to maintain
resolution, then, you also need a big CCD.  This is an argument in favor of
full-frame 24x36 CCDs, but nobody has them yet (practically).

Another problem is thermal noise, but you'd have to actively refrigerate a
CCD to really drive it down and realize the full benefits of CCD range at
the shadow end.  That's probably not practical in a portable camera.
Fortunately, it shouldn't be much of an issue except for really long
exposures or really warm environments.




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[filmscanners] Re: Scene brightness and CCDs

2002-06-11 Thread Anthony Atkielski

Austin writes:

 How's that that ...result in a photograph
 containing virtually no contrast...?

Using a wide gamut, the midtones are very compressed with respect to the
overall range of the image.  When you display this on a device that doesn't
have much range compared to the gamut, the midtones will lack contrast.
This is easy to see just by playing around with different color spaces in
Photoshop.

 P.S.  I would comment more on this discussion...
 but simply don't have the time, and the other
 discussion I'm entertained with is rather time
 consuming...and more important, at least to me.

Good.


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[filmscanners] Re: Archiving and when to sharpen(was:Color spaces for differentpurposes)

2002-06-11 Thread Anthony Atkielski

Laurie writes:

 Don't you have this reversed?  My understanding
 is that JPEG is lossy while TIFF with LZW is
 lossless.

Yes, I do, sorry.  Fortunately, you understood what I meant, not what I
wrote.  I was in a rush, as usual.


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[filmscanners] Re: Scene brightness and CCDs

2002-06-11 Thread Anthony Atkielski

Austin writes:

 Isn't that a curve issue if you say it's
 only in the mid tones?

It might be, if that were what I had actually said.  But I only mentioned
the midtones; I did not say that only they were affected.

If you divide a 100:1 ratio of luminosity into 256 equal parts, the
middle five stops (the midtones) will be divided into only 64 discrete
levels, and will represent only 25% of the total dynamic range.  If you
divide a 1000:1 ratio of luminosity into 256 equal parts, these same
midtones will be divided into 128 levels, or half of all available levels,
and half of the total dynamic range.  If the bulk of your image is recorded
in midtones, as would be typical for most images, properly exposed, the
former gamut will give you only half the tonal resolution and contrast of
the latter.  And if you attempt to improve contrast by boosting the
increments between the midtones with an S curve, you risk posterization in
the first case, but much less so in the second.

This is why wide gamut shows poor contrast in midtones if displayed as-is,
and why it may produce unacceptable results if you simply try to play with
the curves.


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[filmscanners] Re: Dickbo

2002-06-11 Thread Anthony Atkielski

Guy writes:

 I vote for his expulsion.

Consider following my example instead.


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[filmscanners] Re: Color spaces for different purposes

2002-06-09 Thread Anthony Atkielski

Tony writes:

 This is only a minor sharpening to restore
 the sharpness of the original ...

Sharpness cannot be restored, it can only be simulated.  Sharpening causes
deterioration in image quality, so it should be avoided until the image is
about to be prepared for a specific use.  I archive all my images without
sharpening.




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[filmscanners] Re: Color spaces for different purposes

2002-06-09 Thread Anthony Atkielski

Laurie writes:

 Theoretically maybe ...

All images are bitmaps at the time of sharpening.  The format in which they
were or will be stored is irrelevant.

Additionally, all sharpening degrades an image, so it should not be carried
out for images that are being archived, as you may need the highest possible
image quality later on.


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[filmscanners] Re: Color spaces for different purposes

2002-06-09 Thread Anthony Atkielski

Ken writes:

 But when printing it's best to go direct from
 the TIFF isn't it?

It doesn't matter.

 When producing for the web, yes, I go to jpeg
 and then sharpen.

You can't.  All images are bitmaps while you are manipulating them.  JPEG
and TIFF are just file formats.




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[filmscanners] Re: Color spaces for different purposes

2002-06-09 Thread Anthony Atkielski

Preston writes:

 One pre-press expert in my area recommends
 ColorMatchRGB instead of Adobe98 for pre-press
 work. Is this a Mac vs. PC thing?

No, it is more of a printed-on-paper vs. electronic-display thing.
ColorMatchRGB is designed for print, whereas Adobe98 is for more general use
and has a gamut somewhat larger than what will usually fit on offset
printing.


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[filmscanners] Re: Color spaces for different purposes

2002-06-09 Thread Anthony Atkielski

Ken writes:

 ... but could someone offer a technical explanation
 of why sharpening has so much more visible effect
 on jpegs as opposed to TIFFs?

It doesn't.


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[filmscanners] Re: Color spaces for different purposes

2002-06-09 Thread Anthony Atkielski

Laurie writes:

 ... how does one sharpen between the conversion stage
 and the compression stage?

One does not.

There seems to be a widespread misconception here.  While you are editing an
image, it _does not have_ a format; it isn't JPEG, or TIFF, or anything
else.  The image is stored on a file in JPEG or TIFF or whatever format you
choose, but it has no format during editing, and so whether you edit a file
opened from TIFF or JPEG makes absolutely no difference while you are
editing.  An image in an editing program is just a mass of pixels.



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[filmscanners] Re: Color spaces for different purposes

2002-06-09 Thread Anthony Atkielski

Maris writes:

 Sharpening at that point was what I was
 suggesting, before saving as a more-compressed JPG.

Sharpening permanently diminishes the quality of an image, and it also makes
the resulting JPEG file somewhat larger.


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[filmscanners] Re: JPG sharpening [was: Color spaces for different purposes]

2002-06-09 Thread Anthony Atkielski

Maris writes:

 True enough, but if the image requires sharpening?

You cannot know if an image will require sharpening or not until you know
how the image will actually be used.

 I would think it better to convert to JPG and
 then sharpen rather than sharpen in TIFF and then
 convert.

Neither of these operations is possible.  You cannot sharpen anything while
it is stored in a TIFF or JPEG file; you must open the file, read the image
data inside, and load it into an image-editing program such as Photoshop in
order to sharpen it.  While the image is in Photoshop, it _does not have_ a
format; it is not TIFF or JPEG or anything else.  When you store the image,
it is recorded in a file in TIFF or JPEG format.  But you cannot sharpen an
image in TIFF or sharpen an image after conversion to JPEG; neither of
these makes any real sense.


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[filmscanners] Re: JPG sharpening [was: Color spaces for different purposes]

2002-06-09 Thread Anthony Atkielski

Laurie writes:

 For other than web work, some have suggested
 that saving an image for archival purposes as a LWZ
 compressed TIFF file is the best way to go
 for compression without artifacts.

True--TIFF is lossless, and so it does not create artifacts.

However, if you save an image as JPEG using the lowest (least) possible
compression, the saved version will be essentially identical to the original
scan.  Scans do not contain more detail than a low-compression JPEG can
hold.




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[filmscanners] Re: JPG sharpening [was: Color spaces for different purposes]

2002-06-09 Thread Anthony Atkielski

Laurie writes:

 I agree with this; but in many if not most
 cases, the compression level used or required
 is greater then the lowest possible amount,
 ranging from level 6 to level 3 in order to
 get the file small enough to be an email attachment
 or a web site download.

I was thinking only of archived photos.  For Web and e-mail use, in most
cases you can crank the compression all the way up in Photoshop (that is,
set it down to 1, the highest compression setting) and the image will still
look fine.  Unlike some editing programs, Photoshop won't let you compress
the image so much that it really looks bad on the screen; even the worst
setting is still pretty good.

 This statement I do not understand; please
 elaborate.

Most scans, at full resolution, do not actually hold enough detail to make
full use of that resolution, so compressing them into JPEGs really doesn't
sacrifice anything.

Additionally, with the lowest compression settings of Photoshop (level 10),
I have yet to be able to distinguish between the original and the JPEG in
terms of image detail, even when greatly magnifying the image.  Photoshop is
very conservative.

 Surely, this cannot be the case if we are talking
 about raw data as opposed to encoded compressed
 data even at the lowest setting in which there
 still is some compression of the raw data.

There is always some loss in a mathematical sense and a strict sense, but in
practice you won't be able to see the loss when storing full-resolution
scans as JPEGs with the quality setting set as high as it will go.

I've never had any problem losing detail in archived JPEGs as long as I use
the highest quality setting.  I sure would like to see a 16-bit version of
the JPEG standard, though.




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[filmscanners] Re: Color spaces for different purposes

2002-06-09 Thread Anthony Atkielski

Laurie writes:

 In practice, I do not think they are seperable
 so as to allow some other action to be carried
 out between the two processes, although it may be
 theoretically possible.

JPEG encoding requires the rough equivalent of a Fourier transformation on
the data; once that is undertaking, bitmapped operations on the image are no
longer possible.  So one cannot really separate them.  Not all encoding
formats impose this constraint, but I haven't heard of any software that
separates the two processes, just the same.


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[filmscanners] Re: Archiving and when to sharpen (was:Color spaces for differentpurposes)

2002-06-09 Thread Anthony Atkielski

 yes; if there are many pixels of same color, image
 will compress more.

And that is almost never true for real-world photographs, although it is
certainly true quite often for computer-generated images such as diagrams
and the like.

 Wow, are you sure? The LZW TIFF was *larger*?

It can be if there is a _lot_ of detail.  In a lossless compression scheme,
the chances of a compressed image being _larger_ than the original are
always equal to the chances of it being smaller, if the image is completely
random.  In practice, totally random images are scarce, but the more detail
an image contains, the more closely it approaches randomness, and the
greater the probability that the compressed file may actually be larger than
the uncompressed file.


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[filmscanners] Re: Copyright of photos

2002-05-26 Thread Anthony Atkielski

Unfortunately, there is no way to prevent visitors to your Web site from
stealing the images you display upon it.  Jim's method is easily defeated
(you can take a screen shot by pressing Print Screen and capture the image
for later use, with or without a transparent GIF).

The reality is that you cannot simultaneously allow visitors to view an
image and yet prevent them from saving a copy of the image.  The only option
you have, then, is to not put anything on your site that you cannot afford
to have stolen.

In my case, I don't worry a lot, since, even if someone likes my image
enough to steal it, the resolution of the image is generally too low to
permit decent printing.  An 800x600 image looks large on a screen, but only
measures about 2x3 inches when printed at a decent resolution on a good
printer.  So anyone who wants a really high-resolution copy of one of my
images will still have to license it from me.  I can't do much about people
who steal and use the low-resolution versions on my site, short of suing
them, which I usually cannot afford to do, even if I find out about them.

- Original Message -
From: Colin Maddock [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, May 26, 2002 05:10
Subject: [filmscanners] Copyright of photos


The copyright of photos on the internet had quite a thrashing on this list a
few months ago, but did any solution to the problem of people stealing
copyrighted images come up? On the nyip.com website this month,
http://www.nyip.com/tips/digital_dialog0402.php Jim Barthman has come up
with what could be an answer, involving placing a transparent GIF over the
image you want to protect from downloading.

Colin Maddock




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[filmscanners] Re: 35mm holders in Nikon scanners

2002-05-21 Thread Anthony Atkielski

If the FH-835 is the standard holder that comes with the 8000ED (I don't
have it in front of me now), I've used it, and it seems to work just fine.

- Original Message -
From: Tomek Zakrzewski [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, May 20, 2002 20:44
Subject: [filmscanners] 35mm holders in Nikon scanners


Did anybody had a chance to use both FH-3 film holder of the Nikon 4000ED
and FH-835 of the Nikon 8000ED?
From what I know the FH-3 is very good in providing flat film, but since I
haven't seen the FH-835 at work, I'm not sure I get the same film flatness
with this MF scanner.
To put it simply: do I compromise film flatness from 35mm film when I scan
with 8000ED instead of 4000ED?

Regards

Tomek Zakrzewski



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[filmscanners] Re: 35mm holders in Nikon scanners

2002-05-21 Thread Anthony Atkielski

If the FH-835 is the standard holder that comes with the 8000ED (I don't
have it in front of me now), I've used it, and it seems to work just fine.

- Original Message -
From: Tomek Zakrzewski [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, May 20, 2002 20:44
Subject: [filmscanners] 35mm holders in Nikon scanners


Did anybody had a chance to use both FH-3 film holder of the Nikon 4000ED
and FH-835 of the Nikon 8000ED?
From what I know the FH-3 is very good in providing flat film, but since I
haven't seen the FH-835 at work, I'm not sure I get the same film flatness
with this MF scanner.
To put it simply: do I compromise film flatness from 35mm film when I scan
with 8000ED instead of 4000ED?

Regards

Tomek Zakrzewski



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[filmscanners] Re: Flatbeds for 6x6 negs.

2002-05-19 Thread Anthony Atkielski

The Epson 2450 is widely regarded as a good scanner for such purposes.  No
SCSI, though, as far as I know.

- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, May 19, 2002 16:29
Subject: [filmscanners] Flatbeds for 6x6 negs.


Hi,

Apologies if this has been asked 1000 times before.  I am looking for a
flatbed scanner capable of scanning 6x6 negatives. It has already been
explained to me that quality will not be as good as from a dedicated film
scanner but I can only go for a flatbed (I can justify scanning images but
not film).

I have found an Epson Expression 1680 Pro and a Umax Powerlook III (does not
seem as good).

The budget is circa 1000 UKP (it can stretch but not to the price of a Umax
Powerlook 3000).  Other bits of info are that films are in strips of 3
negatives, the scanner would be connected to PC, and SCSI interface is
preferred. The output - if used at all - will be put on the web so although
the final quality may not be too high I would like to get as good an image
as
possible.

Any advice or suggestions as to what other flatbeds may be available is
welcome. Will the scanned images be any better than scanning 5x5 prints?

Regards and TIA
Charles

==
Charles Christacopoulos, Management Information Officer,
Planning  Information Group, University of Dundee, Dundee DD1 4HN,
Scotland, United Kingdom.
Tel: 44(0)1382-344891. Fax: 44(0)1382-201604.
http://www.somis.dundee.ac.uk/ http://somis2.ais.dundee.ac.uk/



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[filmscanners] Re: Film resolution - was: Re: 3 year wait

2002-05-16 Thread Anthony Atkielski

Austin writes:

 It's to what degree it sees it.

Samples do not have degrees; either they exist, or they don't.

 Who said there were?

It's to what degree it sees it.


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[filmscanners] Re: 3 year wait

2002-05-11 Thread Anthony Atkielski

Austin writes:

 10 stops is not hard at all to get in a
 single scene.

Examples?

I routinely scan slides in which there is at least some detail at every
point in the image, light and shadow (excluding specular highlights and
light sources)--often more than I realized was there.  Clearly, the scene
brightness did not span ten stops if I'm able to get anything other than
solid black in the shadows and solid white in the highlights.  My own
metering of the original scene supports this, with 6-7 stops being about the
largest spans I usually see.  Most shadows are lit at least a little bit
indirectly; most highlights are not as featurelessly bright as they might
appear at first glance.




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[filmscanners] Re: Re:Computer size(New Topic)

2002-05-11 Thread Anthony Atkielski

Rob writes:

 What size computer do I need so that I may
 work happily  with Photoshop and 200M scan
 file size.

The largest and fastest you can afford.  Seriously.

RAM is the most important.  You should have at least a couple of times as
much RAM as your image size to work at a reasonable speed ... and the more
you have, the better.  If you can afford and configure 10 GB of RAM, so much
the better.  You cannot have too much.

Next, the faster the disks you have, the better.  Having lots of RAM makes
the disks far less important, but they should still be fast, otherwise
Photoshop will nearly grind to a halt each time it needs to touch the disks.

Finally, the importance of processor speed varies with the type of
manipulations you perform, but here again, faster is better.  A single
processor at 1 GHz is preferable to two processors at 500 MHz each, since
most Photoshop operations cannot be spread over multiple processors.  But if
you are held back by RAM or disk, a faster processor won't make much of a
dent in your working speed.

 I now have a P3 800  / 780M ram  + scratch disk.
 This  is using sometimes 3G  PShop memory and is
 taking heaps of time to process.

Triple the amount of RAM, if your machine allows it, or simply buy and
configure as much RAM as you can afford, up to the maximum on the machine.
That will make a _huge_ difference.

If you still see disk activity after adding as much RAM as you can, try to
get faster disks.

If you finally have added enough RAM to eliminate disk I/O and/or you've got
the fastest disks and the most RAM you can get, and you still want more
speed, consider a faster processor.  Usually, though, RAM will provide the
biggest jump in speed, and may well be enough alone to fix your problem.
Disk will provide another, somewhat smaller jump.  Processor will provide a
significant jump only if RAM and disk are already adequate, as Photoshop
tends to spend a lot more time I/O-bound in most configurations than it does
processor-bound.  You can get a feel for the influence of processor power by
comparing the time required for a Gaussian blur to that required for a
motion blur or radial blur (the latter requires a lot more processor time
than the former, but not really any more memory or disk); the bigger the
difference, the more processor-bound your machine currently is (if you see
no difference, you need more RAM, or failing that, faster disks).


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[filmscanners] Re: Scan Elite XP?

2002-05-11 Thread Anthony Atkielski

I doubt that XP will Win 2K.  There is no server version of XP, and Win 2K
Pro is a more compatible desktop for Win 2K server than is XP.  XP and 2K
share the same post NT4 code base, from what I understand.

- Original Message -
From: Lloyd O'Daniel [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, May 11, 2002 08:25
Subject: [filmscanners] RE: Scan Elite  XP?


Well, that's true for XP Home. But, as I understand it, XP Pro is to
replace Win 2k and is in fact NT6. Usually, MS discontinues OS's they've
replaced. But the various W2k Servers are still current, and they still
might sell W2k Pro to placate the inertia of corporations.

Lloyd

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Op's
Sent: Saturday, May 11, 2002 12:49 AM
To: [EMAIL PROTECTED]
Subject: [filmscanners] Re: Scan Elite  XP?




I don't think that XP supersedes W2000.XP replaces 98,ME.

Rob



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[filmscanners] Re: Firewire Card

2002-05-11 Thread Anthony Atkielski

Arthur asks:

 Scanning reference: has he yet incorporated a
 decent color management system into his OS?

Windows XP does indeed include system-level color-management capability,
although it isn't very elaborate.  It is apparently not automatic;
applications must explicitly choose to avail themselves of it.  In turning
it on and off, I didn't see any obvious difference in color, so there must
not be too many programs that reference it.  I haven't been able to find any
details on exactly what this new feature does in XP.  You can find it by
looking at the desktop properties (under Advanced stuff).




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[filmscanners] Re: 3 year wait

2002-05-11 Thread Anthony Atkielski

Arthur writes:

 I believe what Anthony is saying is that
 it is rare that a 10 stop difference would
 occur in adjacent areas of an image, not that
 a full image wouldn't contain a 10 stop range
 of contrast.

Actually both.  I can't recall offhand seeing a 10-stop range in a single
image, excluding light sources and specular highlights (which often zoom
right off the scale--but you'd never realistically try to record detail in
those anyway).  Even between deep shadows and sunlit highlights, the
differences shown by my spot meters do not exceed half a dozen stops or so
in most cases, and I don't remember any specific cases of ten-stop
differences, although I'm sure there have been a few almost artificially
extreme cases in which they appeared.

Even right here in front of my PCs, in a darkened room with a few light
sources, I can get only about a 8-9 stop difference between the brilliantly
lit white ceiling above a halogen lamp and the dark shadow under a desk.


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[filmscanners] Re: Real-World Scene Brightness Range

2002-05-11 Thread Anthony Atkielski

Austin writes:

 BW film can easily handle 10 stops, with
 very little effort.

It can _just barely_ handle ten stops, from zero to maximum density.  Since
some margin is necessary in order to hold detail, ten stops is potentially
difficult to achieve.  Fortunately, it's not generally necessary.  For many
films, the tonal resolution at the high and (especially) low ends of film
density is rather poor as well.

 Try reading up on the Zone system and
 compensation development.

I don't need to; I have the film data sheets right in front of me, and I'm
simply reading off those.

In any case, however, real-world scenes aren't likely to ever tax film over
a ten-stop range.


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[filmscanners] Re: Re:Computer size(New Topic)

2002-05-11 Thread Anthony Atkielski

Denis writes:

 To carry disk performance to the max, go with
 a striped SCSI array of 15000 RPM drives!

Very expensive, though.  Also, one thing tends to lead to another:  If you
use 15000 RPM drives, you soon have to start worrying about keeping the
whole machine from melting down in its own heat.

 This (striped array) works fine for video work
 where we routinely handle files of 8GB and larger
 on a puny system of 766MhZ and 256MB RAM.

Wouldn't it be cheaper to just add a raft of RAM instead of an SCSI disk
array?




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[filmscanners] Re: Re:Computer size(New Topic)

2002-05-11 Thread Anthony Atkielski

Laurie writes:

 I know of no PC motherboard that will support
 that much RAM even if one could aford to buy it.

That's why I said if you can afford AND CONFIGURE.

My own motherboard is limited to 1.5 GB (and that's what I installed).
Windows XP Home Edition is limited to 2 GB (a marketing-imposed crippling of
the OS, not a technical constraint).  Windows XP Pro is limited to 4 GB
(partially a technical constraint, inherited from NT and also partially
related to Intel hardware).




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[filmscanners] Re: Firewire Card

2002-05-09 Thread Anthony Atkielski

Howard writes:

 Is putting in a Firewire card as simple
 as opening the computer case, shoving
 the card into an empty slot (just kidding...
 lets say gently inserting) and turning on
 the computer and having Windows XP find
 new hardware and plug 'n playing the driver
 to the card automatically...then plugging
 the peripheral into the card?

Yes.  That's how I installed my Nikon scanner on my Windows XP machine.


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[filmscanners] Re: LS2000 Coolscan shadow noise issues getting worse?

2002-05-04 Thread Anthony Atkielski

Les writes:

 Is there a good safe procedure for opening
 the scanner and accessing these parts?

Not necessary on the LS-2000.

Remove all adapters from the scanner.  Turn the scanner on, and wait until
it starts to advance the scan head towards the front of the scanner.  Turn
the scanner off a second or two before it reaches the forward limit of its
travel.  This makes the mirror and lens readily accessible through the
opening in the front of the scanner.  Then just blow away the dust, and
_carefully_ clean the mirror if necessary (the lens is usually clean, since
its axis is horizontal and it doesn't collect much dust, but you can clean
it if you want).  I use some lens tissue around a Q-tip, or just the Q-tip,
occasionally slightly moistened with Kodak lens cleaning fluid or distilled
water.  Works fine.

I've done this lots of times and I haven't noticed any degradation to the
scanner.

Keeping the adapters out and the scanner door closed when not in use helps
retard the buildup of dust.

As for the 4000, I don't know how much it resembles the 2000 in this aspect.

And if anyone knows how to clean the 8000ED, I'd very much like to know how
to do it.  I worry a lot about what will happen if it gets dusty, although I
keep it wrapped in plastic with the door closed when I'm not using it.


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[filmscanners] Re: LS2000 Coolscan shadow noise issues gettingworse?

2002-05-04 Thread Anthony Atkielski

The LS-2000 mirror is indeed silvered in front.  Nevertheless, I've managed
to clean it without damaging it, as far as I can tell.  Besides, what choice
do I have?  If the mirror gets dirty, what else can you do?

- Original Message -
From: Arthur Entlich [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, May 04, 2002 12:17
Subject: [filmscanners] Re: LS2000 Coolscan shadow noise issues
gettingworse?


I would assume all mirrors used in scanners are front surfaced.  Front
surfaced mirrors are VERY delicate and easily scratched and should be
handled with the greatest respect.

Art




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[filmscanners] Re: Archiving to CD - is there a file sizelimit ?

2002-05-03 Thread Anthony Atkielski

Dual boot is transparent to a scanner, so it shouldn't matter.  Be sure that
you install the software in two completely different places on the machine,
however (you should not install it into the same directory on the same drive
in the same partition, for example).

- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, May 03, 2002 02:55
Subject: [filmscanners] Re: Archiving to CD - is there a file sizelimit ?


i have a duel book on my laptop and an LS-4000. it's installed one operating
system and i was unable to install the software on the other system (windows
98 full addition). nikon said they don't support duel boots. has anyone any
experience with this? joanna



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[filmscanners] Re: OT: which wintel OS for digital imaging?

2002-04-30 Thread Anthony Atkielski

Dave writes:

 I do Norton Win and Disk Doctor, then defrag.

Things like that were useful in Windows 3.1, but they haven't been necessary
in ages; they probably hurt more than help in NTFS-based systems like
Windows NT, 2000, and XP.

 Read about utilities including System Mechanic
 here:

Hmm ... sounds like an invitation to trouble.  No wonder you are having
difficulties, if you use things like that.

 System Mechanic isn't the problem, I only got
 it a day or two ago, and I've been having
 problems with XP for awhile now.

Then stop using the Norton stuff.  That will probably help.


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[filmscanners] Re: Advice Please

2002-04-28 Thread Anthony Atkielski

David writes:

 I shoot medium format (t-max 100) film and the
 end use is for high qualiy glossy magazines and
 corporate publications, usually A4, very
 occasionally A3.

Any decent scanner will be more than sufficient for this type of work, as
offset printing can't come close to the quality produced by a good film
scanner.  So from this standpoint, both the Nikon and the Flextight (and
probably any other MF scanner) would be fine.

If you want to be able to extract as much information as possible from the
film for archival purposes, then you may need to look at the scanner with
the best quality (i.e., highest price, roughly).

 Calumet, for example, tell me that the Nikon
 8000ED would be more than adequate for the purpose,
 whereas Digital Workshop say that the Nikon would
 not be up to the job and I would need a Flextight
 III, at considerably more expense.

Both would be more than enough for publication.

 So, first question; would the Nikon give me
 pin-sharp scans from b/w negs, suitable for high
 quality publication, at least to A4?

Easily.

 Secondly, when the Nikon was demonstrated, the
 film was clearly not at all flat in the holder.
 They told me that the scanner had enough depth
 of focus to compensate for this. Is this true?

Depends on what you mean by not at all flat.  The Nikon is sensitive to
warping of the film and I've had scans with the standard 120 strip holder
that were visibly soft in areas that warped out of the focus plane.

The solution is to use the MF glass holder that is available as an option
for the scanner (about $350).

 They also said that, if it was a problem, a glass
 carrier was available, but I can forsee all kinds of
 problems with that, such as dust on the extra 4
 surfaces, and newtons rings.

True.  I seem to get better scans with the glass carrier than with the
standard carrier, though.

I've only recently started using the LS-8000ED and I haven't scanned any
black and white yet, but the results with transparencies are great.


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[filmscanners] LS-8000ED examples

2002-04-27 Thread Anthony Atkielski

I've uploaded some more scan examples for any interested parties, scanned
with the Nikon LS-8000ED.

This is a scan of a Provia 100F transparency, in medium format, 6x6.  The
picture was taken with a 150mm lens (equivalent to 90mm on a 35mm camera),
roughly 1/250 at f/5.6 or so, as I recall.  The photo was shot handheld.
The location was the Disney Studios Park in Paris.

The scan was performed with the Nikon glass MF strip holder, 14-bit mode, 4x
sampling, dICE turned on, GEM and ROC off, superfine scan (1 CCD) off, auto
focus and exposure, no other adjustments from defaults.

The files are as follows:

http://www.smallevents.com/mousebefore.tif

... A reduced-size copy of the raw scan from the scanner.  This is a 16-bit
TIFF of about 2 MB; it is identical to the original, apart from being
downsampled to 1/223 of its original size (from 8964 pixels on a side to 600
pixels).  You can see that the entire frame is covered.  The blurred stuff
just to the left of the frame itself is just a reflection of the
transparency on the side of the film holder.

Since this is a TIFF, you won't be able to see it in your browser, but you
can download it and open it in Photoshop.

http://www.smallevents.com/mouseclose.tif

... An original-size excerpt from the original scan, showing detail
resolution.  No unsharp masking or anythign done.  This part of the photo
was also the original focus point in the photograph itself.

http://www.smallevents.com/mouseafter.jpg

The scan after adjustment in Photoshop.  Adjustment consisted of changing
the curves to brighten up the scan a bit and to make the color balance match
the original transparency on a light table.  The original transparency has
better contrast, but this is the best that can be done for a CRT display.  I
also cloned out a tiny spot of Newton's rings in the sky in the original.

If you want to see how well the scanner holds the shadows, load the TIFF and
crank up the curves in Photoshop; you can see that there is more detail in
the shadows than are normally visible on a CRT.

Overall it seems to do a pretty good job.




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[filmscanners] Re: LS-8000ED examples

2002-04-27 Thread Anthony Atkielski

David writes:

 How long did that take for the scan?

Hmm ... I didn't time it.  Maybe 6-7 minutes, I guess.

 Presumably 1x sampling, not superfine (i.e.
 using all 3 CCDs) would be faster? How much faster,
 and how much worse?

1x sampling would probably be nearly four times faster, logically, but I
haven't timed that, either.  I don't think it would look much worse.  In
fact, I haven't really tried to see the difference between 1x and 4x; I only
use 4x because the scan is still pretty fast, and I used to use it on the
LS-2000.

 From French culture to American kitsch. How
 far the great have falleng.

Well, it was a good test subject.  Too bad the DOF was so deep, as the
background adds a lot of clutter.

 Getting the original close to your result requires
 a major change to the blue channel.

Yes, but all the Nikon scanners I've had tend to produce bluish or
bluish-green scans.  I don't know why.  The correct usually consists of
boosting red and green and reducing blue.  The exact exposure of the film
makes a difference, though, as I'm pretty sure there is a slight color shift
in Provia in underexposed vs. overexposed areas.

One thing I notice is that the red is not blinding, as it has been in most
of my scans in the past.  This means that (1) maybe the exposure I used made
a difference (as far as I can tell, this particular shot just happens to be
perfectly exposed); or (2) Provia 100F has been modified to reduce its
propensity to yield very vivid reds (or the 120 emulsion is actually not the
same as the 135 emulsion); or (3) the LS-8000ED does not emphasize reds, and
previous Nikon scanners did (?).  Historically, I've noticed that red is
always almost totally saturated in Veliva and Provia scans--so much so that
when I boost saturation, I usually do it only for the blue and green
channels, otherwise the red will burn holes in the retina.

 Moving from consumer digital to scanned film,
 I've been quite surprised at the radical color
 adjustments that are required.

They aren't as radical as they seem.  A surprising small shift in the
respective gammas for the three channels corrects the color.

Also, the film itself tends to shift with exposure.  My impression is that
as exposure goes up (at least for Provia), the red goes up and the blue goes
down.  However, on the light table, the slide looks exactly like the
_corrected_ version of the scan, so it can't be just the film.  Maybe the
scanner itself shifts colors based on exposure.

 I suppose that's unavoidable?

I've never obtained a scan that didn't require color correction.  Note,
however, that I never try to correct anything in the scanner; I always make
all corrections in Photoshop, and I leave the original scan relatively raw
as it leaves the scanner.


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[filmscanners] Re: Scanner calibration

2002-04-24 Thread Anthony Atkielski

Arthur writes:

 Are you sure altering color balance isn't
 cheating? ;-)

That depends on the direction of the alteration.  If you alter colors to
match real life, it's not cheating at all; if you alter them to create some
sort of departure from real life, it is cheating (with respect to
representing the image as an image from real life).

I correct colors to make sure the image looks like real life.  The typical
example is correcting light from streetlights on Provia so that they have
the proper pinkish-orange color that HPS lamps appear to have in real life,
instead of the yellowish-green rendered by Provia.

 The film is probably recording a more accurate
 color temperature than our eye does.

True for blackbody light sources, not true for discontinuous sources such as
discharge lamps, which don't have a real color temperature to begin with.
Film will often react much differently to discontinuous sources than will
our eyes, so the film rendering has to be corrected.

Additionally, even if film records blackbodies correctly, to make things
look real we must simulate the automatic white balance of the human eye to
some extent.  It's true that real-world images in shadow are very blue
indeed, but we don't notice that much in real life; and if the objective of
the photo is to create the same perception that we had in real life, some
adjustments are necessary.

 As you know, we color adjust chemically and
 reduce the blue component we see in shadows.

No chemical adjustment is required.  The brain handles white balance
adjustments.  Direct fatigue of retinal cells is much less of a factor, and
much shorter in duration.




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[filmscanners] Re: SS4000 Plus not to Europe!

2002-04-21 Thread Anthony Atkielski

It should say on the power supply what it will accept.  If it came with
several power cords, it will probably accept anything.



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