Raw denoise - set different treshold for luminance and chrominance
I noticed that "Raw denoise" often gives best results of all available denoise algorithms. But it is always good to denoise chrominance much more than luminance. There's such option in "Denoise – non local means". It would be great if we could do the same in "Raw Denoise" filter.
#1 Updated by rawfiner - over 1 year ago
This is not possible, because the raw denoise module works on the image before demosaic.
After demosaic, each pixel has a R, a G, and a B value, and we can convert from these values to other representations like LCh or Lab, which separate luminance and chrominance.
Before demosaic however, each pixel has EITHER a R, a G, or a B value. Thus, 2/3 of the information is "missing" to be able to have a conversion to LCh or Lab, and to be able to have a chroma slider.