Incident foot candles at key — 24 fps / 180° shutter angle
Reflected readings also valid at camera position if made from an 18% grey target.
1 foot candle = 1 lumen/sq. foot = 10.76 Lux (SI unit for illuminance)
If R(eflectance) = 1.0, then 1 foot candle = 1 foot-lambert = 3.426 candelas/sq. meter (SI unit for luminance)
* T.Good (pronounced “tee-dot-good”) — the half-stop split between T2.8 and T4. East Coast (?) convention for default/starting point lens aperture, such as when the DP has not yet called out what our stop should be.
Adapted from/in memory of this chart on CML/cinematography.net by Geoff Boyle NSC FBKS