Calculate ISO-Sensitivity
Calculate here with the details of luminance, effective aperture and shutter speed, ISO sensitivity.
Used Formulas:
H = (b ⋅ L ⋅ t) ÷ N2
The factor b = 0.650 arises from the physical properties of the lens (lens transmission, vignetting and stray light factor), an object distance of 80 times the focal length and an angle of 12 ° from the lens axis (ISO measurement protocols)
Convert film speed
Here you can calculate between the different sensitivity units.
