Re: Changing document gamma (or making a "false profile")
Re: Changing document gamma (or making a "false profile")
- Subject: Re: Changing document gamma (or making a "false profile")
- From: Marco Ugolini <email@hidden>
- Date: Tue, 28 Apr 2009 20:46:36 -0700
- Thread-topic: Changing document gamma (or making a "false profile")
In a message dated 4/28/09 8:14 PM, Gene Snyder wrote:
> I recognize that the notion of a "false profile" is anathema to some
> on this list, and I do not wish to start any conflicts.
There would be no conflict if the terminology were used by more than just
*one* controversy-loving "guru" -- and just about no one else of renown in
the imaging industry.
All others prefer to talk about *assigning* a profile instead. And there is
nothing "false" about that.
By the way, changing *gamma* is not exactly tantamount to changing profiles.
> But I want to change the document gamma via edit>convert to profile
Why would you *convert*? For the results that you are after, you should just
*assign* another profile.
If you convert, the appearance remains the same. Which defeats your purpose,
which is to change the file's *appearance*, correct?
> and have not been able to do so in a manner which makes such a setting part of
> the operable listing available in this command. In brief, I can change the
> gamma of a document in color settings
What exactly do you mean "in color settings"? I don't follow you. Please
explain.
> by changing the gamma of, e.g., Adobe RGB from 2.2 to, e.g., 1.5.
And exactly *how* is it that you go about doing that?
> This has an immediate affect
> on the document, and if the new setting is named "gamma 1.5" it will
> appear in the profile list available in edit>convert to profile. If,
> however, I close that document, or close Photoshop, and subsequently
> open another document in Adobe RGB whose gamma I want to change to
> 1.5, the edit>convert to profile>gamma 1.5 is inoperative, i.e., it
> does nothing. I'd really appreciate someone helping me to
> troubleshoot this problem; I'm working in CS2 on a Mac using
> OS10.5.6. Your comments and help will be greatly appreciated.
The description of the steps in your procedure is very insufficient. I for
one have no idea what exactly it is that you are doing, and how -- though I
could try to guess, but I would rather have you tell us. Until that is
clear, it will remain hard to offer suggestions.
Marco Ugolini
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