- Posts: 44
- Joined: Mon Apr 02, 2018 2:47 am
- Real Name: Saleh Alzughaibi
For BM cameras middle grey is the same for every ISO, it's the distribution of stops above and below that change. BM & Arri both plant mid grey around 40%, I think Slog is ~32%, Rec709 is 40%. The lightmeter is going to give the correct exposure for mid grey at a given ISO, how the data a managed around that point is camera, user, and color space specific.
Good Luck