re: Color shift in PhotoShop 8
re: Color shift in PhotoShop 8
- Subject: re: Color shift in PhotoShop 8
- From: Rick Stubblefield <email@hidden>
- Date: Fri, 22 Jul 2005 07:56:40 -0700
First, let me say thank you to the responses so far. But, secondly, I now
feel that after years of doing this (pre-press), studying Real World Color
Management, taking various seminars and following this list daily as well as
using the color and PhotoShop forums at Adobe this morning I now understand
less today than I did yesterday.
The workflow I have relied upon the last few years came about because of
things I learned from someone, who knows far more about this than I do. His
point was that "assigning" a profile is not enough (at least in the
pre-press world) that a file in question must be "converted" to a color
space; that by the very nature of imaging to film or plates takes one out of
a device independent world and puts one square in the middle of a device
dependent world. Makes sense to me. But Steve Upton writes:
>this is the one that makes me say whoa! Convert TO the embedded profile?
>I don't even think this is possible, not that you'd want to do it.
>You CAN convert to the std CMYK workingspace profile, also rather
>heavy-handed...
So, if I can't convert to an embedded profile but I can convert to my
working space profile I am not sure where this leaves me (not even debating
the heavy-handed bit at the moment). If I understand what you are saying,
the only profile I can convert to is my working-space profile. Correct?
Moving on, C. David Tobie writes:
>You can't open a file that you have clipped the tag from in Photoshop and then
>apply another profile and get reasonable consistant results. Photoshop has to
>assume some colorspace for untagged files, and so is opening the file in the
>default CMYK colorspace, which, if it differs from the space you actually had
>the file in before removing the tag, causes incorrect colors... such as a
>yellow cast.
So, does this mean that when PhotoShop gives me the choice, upon opening a
file, to use the embedded profile, assign a different profile or not to
color manage that the phrase "don't color manage" is actually incorrect?
That it is not truly not color managing but using whatever defaults I have
chosen in PhotoShop?
Okay, now that I am even more confused and have asked even more questions
where does that leave me? I read into all this that the incorrect thing I
have been doing (as an aside, up until this one particular file I have never
experienced a color shift like this before) is converting to the embedded
profile when I should be converting to my press profile? And Steve, if this
is "heavy handed" what would my alternative be? My understanding has always
been that if I only assign a profile I haven't actually changed the file to,
in effect be, device dependent; i.e. my image setter.
All I really want to have happen is to be able to have what I see on the
screen, my high res proof and the final printed piece all look reasonably
similar; and until this one file that was happening for me consistently.
I am not above changing my habits (and it looks like, once again, I do need
to change my habits) as I never, certainly don't consider myself to be an
expert in color management. I have seen in this forum that even the experts
sometimes need to look for answers from other experts.
So, anyway, thank you for your responses. I think I have added another small
bit of knowledge to my over-burdened brain.
Rick Stubblefield
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