As I mentioned previously, what you are experiencing with filmic RGB is perfectly normal (and expected) behavior. What filmic RGB aims to do is look at areas of your image which are over- and under-exposed, and compress the luminosity range and reduce the saturation. The effect on the luminosity starts gently (prior to clipped pixels) and gets progressively more heavy-handed as the pixels get closer to (or even beyond) the point of clipping. The same thing happens with the saturation. This is why disabling filmic RGB temporarily allows you to see the extent of clipping in your image. But when you re-enable it, those pixels are corralled back within legal limits. Hope this helps. If you need a better explanation, you'll need to ask Aurélien. 😃 Cheers, Bruce Williams.
---------- Forwarded message --------- From: Marc Cabuy <marc.ca...@gmail.com> Date: Wed, 16 Feb 2022, 00:13 Subject: [darktable-user] 3.8.1 Under expose / black level warning error ? and FILMIC ! To: Cc: darktable forum <darktable-user@lists.darktable.org> >From your experiment with Filmic, I am convinced that Bruce is right. Besides Bruce's excellent tutorial video's, here is another video by Nicolas Winspeare about what Filmic does: https://youtu.be/flU8QPKpk3s . Op di 15 feb. 2022 13:35 schreef Francesco Scaglioni <f...@mossdog.net>: > Hi, > > On 14/02/2022 21:24, Bruce Williams wrote: > > Also, try disabling filmic RGB temporarily. > That will allow shadows to clip, where filmic is rounding them off gently > to prevent clipping. > > > Interesting. I disabled filmic and pushed the black level up ( RGB levels > ) until the darkest part of the image showed 1,1,0 ( Colour picker ). That > area was showing as underexposed ( Blue in my case ). I then re-engaged > filmic, the chosen area then registered as 0.0.0 but the underexposure / > blue warning disappeared for that area. Almost as if filmic, under certain > circumstances, is disabling the underexposure warning ( or am I just > miserably failing to understand what filmic is actually doing - quite > possible ). > > > > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > darktable-user+unsubscr...@lists.darktable.org > ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
