Hi,
so far there is no such option. What we have are blend modes that limit
a module's effect to only Lab lightness (= L channel) or Lab color but
there is no option to have the effect to individual a and b channels.
But please bear in mind that darktable is fundamentally different to PS.
So even if we would have such a blend mode, you won't be able to have it
working like in PS.
Concerning viewing individual channels: not possible at the moment.
Ulrich
Am 11.03.2017 um 20:11 schrieb Andrew Martin:
Any responses on this? Is there a way to view individual LAB channels in
Darktable?
On 25 February 2017 at 14:03, Andrew Martin <[email protected]
<mailto:[email protected]>> wrote:
Hello,
I have been reading Photoshop LAB Color by Dan Margulis and learning
about various techniques in the LAB colorspace. Consequently, I'm
excited that so many Darktable modules operate in LAB! One thing I
haven't figured out how to do is to apply a module to a particular
channel (either L, A, or B) - how can I do that?
I tried creating a parametric mask, choosing either L, a, or b, and
adjusting the Input and Output sliders, but I was not able to select
just a single channel.
Moreover, is there a way I can view a single LAB channel by itself?
This is useful for example for checking which channel has more noise
(A or B).
Thanks,
Andrew
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