Re: Gray Gamma 2.2 space and Photoshop2022 (23.1.1)
Re: Gray Gamma 2.2 space and Photoshop2022 (23.1.1)
- Subject: Re: Gray Gamma 2.2 space and Photoshop2022 (23.1.1)
- From: Andrew Rodney via colorsync-users <email@hidden>
- Date: Sat, 12 Feb 2022 19:53:22 -0700
I don't see a Photoshop problem here. With the gamma alone, why would you
expect the values to remain the same?
The lab values of the two (gray and Adobe RGB (1998) ) are the same when I view
them before and after conversion (Lstar-0/4/5/710).
> On Feb 12, 2022, at 7:31 PM, Peter Miles via colorsync-users
> <email@hidden> wrote:
>
> Hi List members
>
> Adobe RGB (1998) is gamma 2.2. So I was surprised to see that Photoshop (2022
> 23.1.1) changed the RGB values of a step-wedge I made in Gray Gamma 2.2 space
> after I converted it into Adobe RGB space. For example, in Gray Gamma 2.2
> space my wedge starts out with RGB values, 0,0,0 / 5,5,5 / 10,10,10 /
> 15,15,15 / 20,20,20…. and the AdobeRGB(1998) conversion goes 0,0,0 /
> 13,13,13 / 18,18,18 / 22,22,22 / 27,27,27…
>
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