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Color dither in Photoshop

Posted: Mon Jun 02, 2008 9:21 pm
by Oaklodge
I have a strange problem when I use Photoshop CS3.

I'm using Vista with SP1

When I have an external monitor connected (NEC) and I click the color picker in Photoshop I get a Continuous tone picker without any blocks.

However when I'm using just the laptop LCD I get block of color (I'm fairly certain that this is a new thing)

Vista reports that I'm running in 32 bit color.

Any ideas please ?