Fwd: [darktable-user] 3.8.1 Under expose / black level warning error ? and FILMIC !
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 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 >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 : > 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
Re: Fwd: [darktable-user] 3.8.1 Under expose / black level warning error ?
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
Fwd: [darktable-user] 3.8.1 Under expose / black level warning error ?
Also, try disabling filmic RGB temporarily. That will allow shadows to clip, where filmic is rounding them off gently to prevent clipping. Cheers, Bruce Williams. -- Forwarded message - From: David Vincent-Jones Date: Tue, 15 Feb 2022, 07:17 Subject: Re: [darktable-user] 3.8.1 Under expose / black level warning error ? To: You may want to (right-click on the box) check on the settings that are being used ... this can be confusing and not work as one might imagine. but that said I have found sometimes that the indicators do not show-up as predicted. Often one has to zoom in to see the red and blue markers. David On 2022-02-14 10:48, Francesco Scaglioni wrote: Hi Running 3.8.1 on Ubuntu 20.04 with images from a Fujifilm XT-3. I often use the ( " Keyboard default O " ) highlights and shadows warning. It appears that the highlights warning is working but that the shadows ( defaults to blue ) may not be ? Or am I missing some numpty configuration option ? Any suggestions much appreciated. Cheers, F 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
