markr041 wrote:Now the GoPro Hero11 has 10bit color, even for 4K 120P. So, if one can get a proper transform from the wide gamut "Native" WB color of the GoPro Hero11 to REC202 it would be very useful. The "Flat" profile is a log gamma profile, so a proper transform from that will also be useful.
10 bit, up to 200mbit, with fully disable-able NR. The 11 is worlds ahead of the prior GoPro.
https://gopro.github.io/labs/control/extensions/"Super experimental, alter the log encoding for more dynamic range, or for a closer match with other camera’s log curves. i.e design your own flat profile. Ideal for use with 10-bit, and the existing flat color setting.
e.g. oMLOGB=400 for a little push in dynamic range or oMLOGB=200,-128 for a crude Fuji F-Log emulation."
I am still trying to think of a way without a Zyla to confirm if this log is better than Flat or Natural. I made posts on reddit, no one has any number for any of the 3.
If the Flog 'emulation' is accurate in the Gopro, we already have that CST in Resolve. To my eye it still seems too flat after the CST though. Or maybe just a lack of saturation. Again I wish someone with proper test charts would post test on it.
Though the Tone Mapping algorithm may mean that such tests are meaningless as the 'Algorithm' will no doubt make different decisions for a Zyla than an beach. And we can't turn it of in the Hero 11.
"Tone-mapping controls. Tone-mapping is the in-camera contrast control, dynamically adjusting the video to look good under a range of lighting conditions. HERO10 adds LTM - Local Tone-Mapping, enabling you to see details in leaves and grass textures, way better than all previous GoPro’s. HERO9 and earlier, used GTM, Global Tone-Mapping which adjusts the contrast curve for the image automatically. If you wanted to do these in post, you could use Protune Flat, where all in-camera tone-mapping is disabled and a log curve is applied (do not use these control with Flat, can be weird results.) For a more developed Rec709 video, by shooting GoPro Color or Natural modes, but you wanted to do your own tone-mapping in post–you can now do that. Note: HERO11 is a tad odd with TONE=3, as it tends to under-expose. Always experiment before using an feature. "