Nothing too complicated, honestly. I just use a Color Space Transform to take it from REC2020/F-Log to V-GAMUT/V-LOG. That takes your footage into V-LOG, but the GH5 shoots in V-LOG-L, so you might have to adjust the contrast a bit ahead of the conversion. I either set the Contrast on a serial node to 1.1 or just leave it be. Then you can just follow @Sage’s instructions on how to properly set your image to conform to cinema luminance, then apply the conversion LUT and place the black levels.
If you’re not using DaVinci Resolve, you can generate a LUT on LUTCalc to get roughly the same results on different software.
It works well, but it’s definitely not up to Sage’s accuracy level, so I’m excited to test the native conversion when it gets released. I’m sure his takes on the best picture profile, codec settings and exposure guidelines will be invaluable to getting great results with the X-T3 as well.
BTW @Sage, any ideas when the conversion for F-Log might drop? I assume its a lot of work, so I just wanna make sure I don’t run out of nails to bite until its released hahaha