If you are not going to make a commercial press you will never need to
convert RGB to CMYK, if you do I think you need a profile from the
printer.
C.H.Ling
Matt Crawley wrote:
>
> Hi All.
>
> I have an annoying issue with Photoshop.
>
> When converting from RGB to CMYK the final CMYK image doesn't have enough
> black. I have tried changing the "Conversion Setup" but I can't get it to
> work right.
>
> The CMYK file ends up with blues made with HEAVY Cyan, Magenta and Yellow
> inks and NO Black. I even tried an experiment were I created a 50% Cyan/20%
> Black square and when I converted to CMYK, Photoshop changed it to
> 62%Cyan/17%Magenta/11Yellow/0% Black. It makes very little difference what
> "Conversion Setup" I use...
>
> HOLD ON! - As I was typing I discovered a way to fix this. It seem the
> problem lies in the CMYK color space I am converting to not the Conversion
> Setup. It looks like most or all of the "U.S." CMYK profiles will render
> blues without black... When I switched to "Generic CMYK" I got a nice dose
> of Black, probably too much but it's a start.
>
> It looks like I'll need to create some of my own CMYK profiles to get the
> results I want.
>
> - Matt Crawley
>
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