Quote Originally Posted by BrianShaw View Post
EV13 is defined as... for 100 ASA, 1/60 at f/11..
EV doesn't need a film speed to be defined as it is just a function of aperture and shutter speed and is not a measure of the light.

Light Value (LV) however, is a light measurement. at ISO 100 LV = EV.


Steve.