>>3977442Canon 300mm f4 entrance pupil area pi*75mm^2 = ~ 17671.45mm2
Canon 5d sensor area: 35.8 x 23.9 mm = 856mm2
pupil area divided by area of sensor = ~20.644
Olympus 300mm f4 entrance pupil area pi*75mm^2 = ~ 17671.45mm2
Olympus EM1 sensor size 17.3 x 13 mm = 224.9mm2
pupil area divided by area of sensor = ~78.57
Because olympus pupil area divided by sensor area is larger, olympus lens is faster.
Are you sure this is what you wanted to say, faggot? Or are you just throwing adult terms without understanding them?
