Masking before sharpening is very useful for many subjects. Making the mask in LaB is just as valid, if not more so, than making it on a colour channel. Having made the mask use it on the CMYK file.
Bob
On Friday, October 24, 2003, at 09:52 pm, Christian Macey wrote:
Likewise other people suggest converting to LAB from RGB or CMYK just to sharpen an image but this is also totally unnecessary.
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