- Joined
- Dec 9, 2006
- Messages
- 21,445
- Reaction score
- 12,416
- Location
- Maryland
- Can others edit my Photos
- Photos OK to edit
I am pretty sure the percentage in 18% grey (ie - the grey card) refers to reflectivity; the value is simply "mid grey."(hence why RGB 127, 127, 127 is 18% grey, not 50%)?