Thu Nov 30, 2017 4:52 pm
Slog2 (or, even worse, Slog3) is a very flat curve, meant for high contrast scenes to capture all values the sensor can differentiate. It was initially developed for professional cameras, which record 422 with at least 10 bit.
Unfortunately, on a camera recording in heavily compressed 8 bit, like the Alpha series, it's not much more than a marketing gimmick. Don't use it for greenscreen! Don't even record internally, but use a decent external recorder like an Atomos or BM.
Since green screen work is normally a controlled lighting situation, you can always limit your scene contrast to something which is easily captured with a profile like Cine 1, 2 or 4. These offer superwhites, which will give you another 2/3 of a stop in the highlights (Cine 2 doesn't). Just compare them and use what you like, as long as you keep the green screen around 50-60% on the waveform.
The basic approach with any 8 bit recording should be getting as close as possible to the intended final look, since you'll need to avoid any heavy grading.
Now that the cat #19 is out of the bag, test it as much as you can and use the subforum.
Studio 18.6.6, MacOS 13.6.6, 2017 iMac, 32 GB, Radeon Pro 580
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