Dan Fromm
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- Mar 23, 2005
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24 x 36's diagonal is ~ 43 mm. By historical accident and long-standing convention, 35 mm cameras are sold with "normal" lenses that are quite long for the format.
I don't know where you got 120 mm as the diagonal of the 4x5 gate. sqrt(4^2+5^2)*25.4 = 163, but the 4x5 gate is actually around 95 mm x 120 mm so that size's diagonal is 153 mm.
I don't know where you got 120 mm as the diagonal of the 4x5 gate. sqrt(4^2+5^2)*25.4 = 163, but the 4x5 gate is actually around 95 mm x 120 mm so that size's diagonal is 153 mm.