Den 07.11.2023 16:32, skrev Andrew Randrianasulu:

вт, 7 нояб. 2023 г., 18:13 Andrew Randrianasulu <randrianasulu at gmail.com <https://lists.cinelerra-gg.org/mailman/listinfo/cin>>:

...

//>/https://blender.stackexchange.com/questions/46825/render-with-a-wider-dynami... />//>//>/well, this one says EXR can hold quite a big value per channel, way above />/1.0f, obviously. But for displaying (and encoding?) it must be compressed />/back to device-specific 0 - 1.0 range. />//>/Thing is, if I open exr example file in gimp 2.10 and re-export it - it />/retain its above 100% values. It does not do this if I do this same />/roundtrip via cingg. So yea, we seems to be clamping at output. />// and this article about Premiere tries to explain Scopes, and especially floating point vs 8bit input - Premiere apparently can limit this setting for scopes themselves....

https://blog.frame.io/2017/09/27/introduction-to-video-scopes/

By looking through the mail archive this month, I will just shortly add a user comment to the images in the latter url: (I hope it will fit not too badly into the exiting mail thread) * Figure 1. Waveform Scope for an under-exposed shot * Figure 2. Waveform Scope after the shot is corrected Fig. 1 is a typical dark shot in low-light or backlight conditions. I have also experienced similar results after digitizing analog SD video, apparently due to relative low color resolution. Fig. 2 is the brighter, shiny video or shot result we normally want. https://filmora.wondershare.com/video-editing/brighten-video-in-premiere-pro... To compare with my smartphone (Pixel 7 Pro), I use "Night Mode" (with AI I think) to lighten up during shooting, or by editing photos with the dynamic or enhance tool.

so, HDR as used in ultra HD need some scope that goes to 10.000 (so, logarithmic I guess ...)!

something we should write somewhere in TODO, I guess .....