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I’m having problems with my levels adjustment. When editing the levels of a CMYK image, I get some strange artifacts, similar in look to an out-of-gamut warning. When the midpoint value of a specific channel is greater than 1.13, all pixels on that channel that should be at 0% are instead at 100%. For example, the image I’m working on now needs to be color corrected, and if I adjust the cyan channel as I’d like, it looks like someone took a MacPaint airbrush loaded with cyan to my image. This is of course unacceptable.
The tricky thing is that I cannot reliably reproduce this problem. Oh it works like a charm every single time on my computer, but on other computers there is no problem. That leads me to suspect the issue is somewhere in my settings. But where?
I’m using Photoshop CS on an XP Pro machine.
BTW, I’m not the only one with this problem:
Pierre Courtejoie "Photoshop CS- Posterized pixels when using levels" 4/8/04 2:32pm </cgi-bin/webx?13/0>
The tricky thing is that I cannot reliably reproduce this problem. Oh it works like a charm every single time on my computer, but on other computers there is no problem. That leads me to suspect the issue is somewhere in my settings. But where?
I’m using Photoshop CS on an XP Pro machine.
BTW, I’m not the only one with this problem:
Pierre Courtejoie "Photoshop CS- Posterized pixels when using levels" 4/8/04 2:32pm </cgi-bin/webx?13/0>
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