It was 9/6/03 11:06 am, when michael shaffer wrote:
> I have heard of the occasional task, for which "filtering" one of the Lab
> channels was of some help, but I haven't heard of any advantage of using Lab
> for tonal or color adjustments.
I suspect Stephen Marsh may have something to say about this as this very
topic is being discussed on the Photoshop list and he has already written a
very helpful post.
Dan Margulis devotes over 40 pages in his Professional Photoshop book to the
subject of correcting color in Lab so it obviously has *some* uses. As an
off hand example, if your image has a stubborn colorcast, moves in Lab will
remove them when other color modes will not or only if you spend an
inordinate time and employ workarounds and personal techniques that you may
have developed.
Personally, I wouldn't worry about moves to Lab and back, especially if your
image is in RGB mode. If your image needs fixing, there's more advantages to
moving to Lab and back than there are disadvantages. By definition, if you
are going to correct an image, you're going to lose something and gain
something so a move to Lab is not going to be 'detrimental' to the image as
such. Again, there are workarounds which allow you to stay in your image's
color mode and at the same time take advantage of Lab's unique color
mapping.
--/ Shangara Singh :: Photographer
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