wemrick1 wrote:I’ve read that 38% is BM middle grey a 2/3 stop beneath the rest of the world.
Rest of the world?
Rec709 is 50%.
BM Film, DJI D Log, and Arri log C are 38%.
Sony S Log, Canon C Log, and Red Log3G10 sit around 33%.
The positions of mid grey (18% reflectance), and white (90%) are going to depend on the gamma curve of the space. The majority of log curves are going to put mid grey below 40%.
Baseline exposure is 25 foot-candles at f1.0 when exposure time and ISO are reciprocal. This is camera and colorspace agnostic.
Good Luck