Re: Lab in Photoshop
Re: Lab in Photoshop
- Subject: Re: Lab in Photoshop
- From: Dick Busher <email@hidden>
- Date: Fri, 12 Jul 2002 09:32:18 -0700
- Organization: Cosgrove Editions
>
Bruce J. Lindbloom wrote:
>
>
>
With regard to Adobe 1998 specifically, there is only a very small amount of
>
clipping that will occur (pure Adobe 1998 green maps into an Lab value whose
>
a* value is -129, which is just barely outside the Photoshop range limit of
>
-128; all other parts of Adobe color space fit inside Photoshop Lab).
>
However, there will be some quantization of colors on the inside of the
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gamut, but this is not "clipping." With other larger working spaces, such as
>
ProPhoto, clipping will be more severe.
Am I correct in my understanding that rgb to cmyk conversions are rgb-Lab-cmyk? If that
is the case, then will cmyk separations from large gamut spaces such as Ektaspace always
result in some clipping? Should we limit ourselves to Adobe rgb when cmyk separations for
offset is the end product?
Dick Busher
Cosgrove Edtions
email@hidden
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