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Purple greyscale in Photoshop CS w/ATI card
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bigred

Joined: 18 Jan 2005
Posts: 2



PostPosted: Tue Jan 18, 2005 1:58 am    Post subject: Purple greyscale in Photoshop CS w/ATI card Reply with quote

I am having a problem in Photoshop CS where my greyscale is purple.
When I have an image that is already black and white, I have no problems editing it or printing it. Also if I have a full colour image, I don't appear to have any problem with greyscale at all.

The problem arises when I go to convert the "mode" of a colour image to greyscale, or when I create a new image with a transparent background and put any greyscale in it.
I've tried the Adobe Gamma program with no avail, but I have heard that the Adobe Gamma program is disabled with all ATI drivers after v4.6.

Here is an example of the colour problems.
http://www.boxhat.com/misc/greyscalecompare.jpg
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BryanDowning

Joined: 05 Jul 2004
Posts: 1554
Location: California, USA


PostPosted: Tue Jan 18, 2005 3:00 am    Post subject: Reply with quote

Does desaturating it give you the same problem? (Shift+Ctrl+U)

You could try messing around with some of the stuff in the color settings. (Shift+Ctrl+K)

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bigred

Joined: 18 Jan 2005
Posts: 2



PostPosted: Tue Jan 18, 2005 4:37 am    Post subject: Reply with quote

Its not a saturation issue, also my color profile is correct.
The problem is that the greyscale is purple when it is rendered over a transparent background. Anything from 1% to 99% opacity displayes as purple instead of grey.
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cbadland

Joined: 19 Jan 2005
Posts: 962



PostPosted: Thu Jan 20, 2005 10:03 am    Post subject: Reply with quote

What does your info palette say?
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