Digital BW, The Print

----- Original Message -----
From: "jimhayes361" <jimhayes@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Saturday, June 29, 2002 8:20 AM
Subject: [Digital BW] Re: ps 6/7 bug:print change confirmed


> --- In DigitalBlackandWhiteThePrint@y..., "Martin Wesley"
> <mwesley250@e...> wrote:
> <snip>
>  I then
> printed
> > out both converted files in PS7 and the PS6 converted file in PS6
> giving me
> > three prints. After letting them season overnight and I took them
> outside in
> > open shade to view. They are all identical as far as I can tell.
>
> Strange that I'm the only one that can print a difference.
>
Something is going on in your system. It is just a matter of isolating it.
Are you running the most recent version of the 1280 driver? Since W2k and
W98 use different versions of the driver I wonder if that could be a factor.

>  A files search on *.ic* should turn them up for Jim.
>
> Win98SE....
>
> After doing this I came up with only one instance of "srgb Color Space
> Profile.icc" dated 4/23/99, in the c:\windows\system\color folder.
>
> There was another interesting profile, something like "photoshop 5
> defaultscmyk.icc" (also a PS4 defaults) in I think the common
> files\Adobe subfolder (didn't jot it down). I figured this didn't
> apply, but I mention it for completeness. Could it select this when
> PS5 defaults are selected in the color settings in PS7 or 6 and lump
> the profiles for all the modes together in this one icc file? Could
> then the srgb component of the "default icc" file differ from the srgb
> file under the system\color folder?
>
> I searched in the registry, I remember the path to the ICM, but just
> saw numbers, no directory paths or file names. Perhaps I'm not skilled
> enough to find stuff here, but since I only turned up one srgb icc
> file, it may be moot.

I would agree. Even if there is a registry entry point to a different
version if it is not on your hard drive it should not be an issue. I really
don't like to mess with the registry directly in any case.
>
>
> >
> > As to why we are in sRGB in the first place, this is a carry over
> from
> > Paul's start on the RGB separation curves when he was using PS5 I
> believe. I
> > have switched to Adobe RGB and while there is a slight difference,
> the
> > curves seem to work just fine.
>
>
>
>
>   This assumes you start
> working the
> > image from scratch in one space or the other. If you work it up to
> print
> > from one and then try and print it from the other I would expect to
> see some
> > differences.
>
> Does this mean for already finished images I am pretty much stuck with
> srgb or will something like a transform curve work? Or just squint a
> little if the diff is negilible. The only real problem I have with my
> one image is posterization, I don't mind too much that PS7 makes it
> darker. Or should Paul redo the curves? I thought the specs on MIS
> site for PC still said to use srgb.

I think you have to give it a try. I would expect some differences but they
may be image dependent. Perhaps do your print from sRGB and then a print
from Adobe RGB and then tweak the Adobe RGB to match. This might lead you to
a single curve or levels action you could just apply to all your images that
you have adjusted to work from sRGB.
>
> If I'm stuck with srgb, the next time I upgrade my OS or something
> similar, but keep PS 6, will I have a different srgb file converting
> my images so all the old ones are no longer valid?

You might just want to abandon sRGB at this point. As you need to do
reprints, do them from Adobe RGB and assess the results. I usually find in
cases like this I want to change something. Even in this digital world I
always seem to have a slightly different take on a image when I haven't
printed it in awhile. Remember that in the darkroom the odds of coming back
several months later to make another print from a negative always results in
something slightly different than the time before. There is just too much
variation in the materials. Just go for the most pleasing result with the
new workflow.
>
> If so, it would be wise to convert ALL my images (that show a
> difference, if I can tell that without printing every one over) now in
> PS6, and store them up on a bunch of CD's, so that the magic
> conversion is already done when opened again, so I can use Paul's
> curves to print in PS7, PS8, etc.

I would just address them one by one as they come up. If you are reprinting
the image a year from now the odds are very high that you will have a
different batch of paper, possibly a different ink set or certainly a
different batch and even maybe a new printer model. Given all of that you
are going to need to make adjustments to your image file and the added
adjustments you need to make for the switch to Adobe RGB from sRGB will be a
small part of that process. Just keep moving forward. There is too much to
do to go back and compensate for a color space change in all you files until
you need to do it.

Martin

(snip)