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
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
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.
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
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.
Unsubscribe by mail to [EMAIL PROTECTED], with
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
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.
I support Ken. I'm currently scanning a large number of rolls of negative
film. They are just 10x.6.67 inch by 72 ppi images for screen display. I'm
keeping them in an electronic catalog of my images. Unless something has
changed in Photo Shop 7, which I recently acquired, sharpening is much more
Tomek Zakrzewski [EMAIL PROTECTED] asked:
What color spaces is best to choose for the following purposes:
- printed material, for example a magazine or a photographic book
- stock photography (image bank)
- inkjet
and Maris V. Lidaka Sr. [EMAIL PROTECTED] suggested:
I also would suggest Adobe
- Original Message -
From: Andrew Darlow [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, June 09, 2002 9:55 AM
Subject: [filmscanners] Re: Color spaces for different purposes
Tomek Zakrzewski [EMAIL PROTECTED] asked:
What color spaces is best to choose for the following purposes:
- printed
]
[mailto:[EMAIL PROTECTED]]On Behalf Of Anthony Atkielski
Sent: Sunday, June 09, 2002 3:29 AM
To: [EMAIL PROTECTED]
Subject: [filmscanners] Re: Color spaces for different purposes
Laurie writes:
... how does one sharpen between the conversion stage
and the compression stage?
One does
Of Anthony Atkielski
Sent: Sunday, June 09, 2002 3:24 AM
To: [EMAIL PROTECTED]
Subject: [filmscanners] Re: Color spaces for different purposes
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
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
: Sunday, June 09, 2002 8:16 PM
To: [EMAIL PROTECTED]
Subject: [filmscanners] Re: Color spaces for different purposes
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
Tomek writes ...
What color spaces is best to choose for the following purposes:
- printed material, for example a magazine or a photographic book
- stock photography (image bank)
- inkjet
I want to scan my images in the most appropriate color space for
the purpose but don't want to use
On Sat, Jun 08, 2002 at 11:41:40AM +0200, Tomek Zakrzewski wrote:
What color spaces is best to choose for the following purposes:
- printed material, for example a magazine or a photographic book
- stock photography (image bank)
- inkjet
I want to scan my images in the most appropriate color
On Sat, 8 Jun 2002 16:17:30 +0100, you wrote:
Personally I do some sharpening for an archival image that may end up going
to different outputs. This is only a minor sharpening to restore the
sharpness of the original which is almost always softened by the scanning
process. Most images will
Probably the artifacts created in the compression process. It would
probably be better to convert to JPG first and then sharpen.
Maris
- Original Message -
From: Ken Durling [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, June 08, 2002 11:05 AM
Subject: [filmscanners] Re: Color
]
Subject: [filmscanners] Re: Color spaces for different purposes
Probably the artifacts created in the compression process. It would
probably be better to convert to JPG first and then sharpen.
Maris
- Original Message -
From: Ken Durling [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent
On Sat, 8 Jun 2002 11:56:29 -0500, you wrote:
Theoretically maybe; but out of curiosity, how does one do this in actuality
when one would have to first decompress the JPG file before one could carry
out the sharpening operations. Afterwhich, one would then recompress the
file again in its
AM
To: [EMAIL PROTECTED]
Subject: [filmscanners] Re: Color spaces for different purposes
Tomek Zakrzewski [EMAIL PROTECTED] asked:
What color spaces is best to choose for the following purposes:
- printed material, for example a magazine or a photographic book
- stock photography (image bank
On Sat, 8 Jun 2002 11:33:05 -0500, you wrote:
Probably the artifacts created in the compression process. It would
probably be better to convert to JPG first and then sharpen.
But when printing it's best to go direct from the TIFF isn't it? This
is where I run into it. When producing for the
08, 2002 11:58 AM
Subject: [filmscanners] Re: Color spaces for different purposes
On Sat, 8 Jun 2002 11:56:29 -0500, you wrote:
Theoretically maybe; but out of curiosity, how does one do this in
actuality
when one would have to first decompress the JPG file before one could carry
out
: [filmscanners] Re: Color spaces for different purposes
On Sat, 8 Jun 2002 11:33:05 -0500, you wrote:
Probably the artifacts created in the compression process. It would
probably be better to convert to JPG first and then sharpen.
But when printing it's best to go direct from the TIFF isn't
in
the compressed
JPG.
Maris
- Original Message -
From: Laurie Solomon [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, June 08, 2002 11:56 AM
Subject: [filmscanners] RE: Color spaces for different purposes
It would probably be better to convert to JPG first and then sharpen
: [filmscanners] Re: Color spaces for different purposes
On Sat, 8 Jun 2002 11:56:29 -0500, you wrote:
Theoretically maybe; but out of curiosity, how does one do
this in actuality
when one would have to first decompress the JPG file before
one could carry
out the sharpening operations. Afterwhich, one
JPG.
Maris
- Original Message -
From: Laurie Solomon [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, June 08, 2002 3:35 PM
Subject: [filmscanners] RE: Color spaces for different purposes
Alas, either I am misunderstanding you or I am terribly confused; both
options are entirely
, 2002 4:40 PM
To: [EMAIL PROTECTED]
Subject: [filmscanners] Re: Color spaces for different purposes
At this point it's moot since Ken said he resizes in TIFF and sharpens, but
I think you are correct - conversion from TIFF to JPG reduces file size and
apparently compresses, I would think to Maximum
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