Ann Sanfedele wrote:

Jens Bladt wrote:


There an image calculator at www.shortcourses.com
whuich can be downloaded here: http://www.shortcourses.com/pixels/index.htm
This will explain, not only about pixels etc., but it can calculatet the
file size (Mb) as well.

Jens Bladt
mailto:[EMAIL PROTECTED]
http://hjem.get2net.dk/bladt

-----Oprindelig meddelelse-----
Fra: David Miers [mailto:[EMAIL PROTECTED]
Sendt: 22. august 2004 02:35
Til: [EMAIL PROTECTED]
Emne: RE: sad stuff about stock photography and up-to-date technology

snip snip ...

I thought Ann had a 6MP digital Canon?  How does a 6 MP Pentax improve the
ability to shoot stock at an acceptable file size?

You guys have got me really confused here now.



Good _ so I'm not alone :) actually, I have a 4mg Canon - someone said I
needed at least a 6mg to
possibly produce a digital file big enough for my
stock agency


Hmmm.

I would guess that if they want ask for a 50Mb file they want 50Mb of *true* pixel data, not the 18Mb (which is already interpolated, by the way) of a 6Mp sensor interpolated up to 50Mb. If they wanted 50Mb *after interpolation*, wouldn't they rather ask for the 18Mb file (or 12Mb from your 4Mb sensor) and to the interpolation themselves?

For 50Mb from a digital camera you'll need something like one of the new medium format digital backs, although the Kodak DSLRs would come pretty close.

But maybe the point is that the resolution of current digital cameras isn't high enough for them, and they require high-quality scans of high-quality film? Also, 50Mb from 35mm film isn't entirely unrealistic, is it? A 5400dpi scan would give approximately 35Mp or 105Mb at 24 bits-per-pixel - but I guess a resolution like that would be pointless with your average El Cheapo scanner (but then again, those are perhaps not 5400dpi anyway) due to other kinds of inaccuracies, and you couldn't use any old film, either, I suppose, as you would then get a lower resolution on the original than the scan (and you don't win much by scanning at a very high resolution if the original has a limited, and lower one.)

- Toralf
(Who knows nothing about photography, but a thing or two about scanning and image processing...)


annsan who cant sleep and needs to




-----Original Message-----
From: Paul Stenquist [mailto:[EMAIL PROTECTED]
Sent: Saturday, August 21, 2004 2:16 PM
To: [EMAIL PROTECTED]
Subject: Re: sad stuff about stock photography and up-to-date technology


We need to enable you with an *istD. It's just fine for stock. Shoot in RAW and convert to 50 meg files in PhotoShop CS. They're sharp and virtually noise free when shot at iso 200 or 400. Paul On Aug 21, 2004, at 11:40 AM, Ann Sanfedele wrote:



Well...

after a long talk with my stock agency gal on the
phone a couple of days ago I've
found out a lot about what I can't do when
submitting stuff - so thought I'd share.

Bottom line, unless I spent thousands of dollars
to upgrade my equipment, the
digital stuff I could produce to show them is
useless.

The stock company will accept my slides, as they
always have done, but they
then scan them and send them out.

The Epson 1640SUP doesn't scan slides and negs
well enough to make
files that are up to spec for industry standards.
And even if I shoot digital
and get something done professionally because I
think the stock agency would
love it, I don't have enough digital power to do
it.

(Herb once said I didn't know enough to ask the
right questions, and I have
to confess I bristled at that but he was
undoubtedly right.)

The agency gave me the correct info, they just
didn't know that my equipment
was not strong enough to handle the requirements -
and I really can't afford to
get into it full blast.

The rejection rate has gone way up for those
photogs in the agency who have tried
to do the scanning and clean-up themselves.

Black and white photography for them is dead.  (at
least my prints are in a safe place :) )
Clients who want black and white just change it
from color.

And then there are my eyes, which have a very hard
time recognizing "razor sharp" and
noticing the noise.

The one thing I did do that she found
"interesting" was using the flatbed as a camera -
for tight close-ups of natural objects - but there
was too much noise in what I sent her,
and I'm really not into spending a lot of time
working on stuff like that.

I was very grateful for the time she took to
explain a lot to me, but a bit discouraged
about my nature stock at this point.

annsan











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