Re: grayscale conversion
Re: grayscale conversion
- Subject: Re: grayscale conversion
- From: Roger Breton <email@hidden>
- Date: Fri, 16 Dec 2005 14:55:22 -0500
> Yes, this is the way I always convert full color images to grayscale, (unless
> I have hundreds of images to do) since the Channel Mixer gives you the visual
> feedback you need. By examining the RGB channels first you can get an idea of
> which one you like the most, and give that one an appropriately higher
> percentage. Once you've mixed 'em with the Channel Mixer (monochrome check
> box checked) and then click OK, you are still in RGB, of course, with the
> Channel Mixer adjustment layer, which you can save or flatten. When you then
> convert to Grayscale, doesn't the file then take on the characteristics of the
> grayscale that you've chosen in PS's Color Settings, as in 10% dot gain, 15%
> dot gain, 20% dot gain, gray gamma 1.8 or gray gamma 2.2? If my monitor is
> calibrated to 2.2 is this the better choice for my PS setting, or is the 15%
> dot gain that my separator/printer claimed the better choice? Is it really
> worth the effort to build the ramp that Jim described?
>
> And of course, many of the images that we get from Corbis & Getty that "look"
> B&W arrive in untagged RGB, since that's how they scan them, and the three
> channels look identical, so the channel mixer doesn't help with these...
>
> Chris Bain
Good points, Chris. I guess Rich could elaborate further on his conversion
settings from RGB to grayscale, once done with the channel mixer. But as far
as Jim's recommended methodology I think it's worth the effort.
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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