Red and Blue

by Gordon

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Calculation goes as following. Angle of view will define effective (in 35mm sense) focal length of the lens. 58 degrees of angle of view will give you roughly 39mm focal length (if angle is measured diagonally). Your lens is (let's say) 6 mm by spec, that is 39/6=6.5 times smaller. Which means that sensor has crop factor of 6.5 (consider 1.5 for Nikon's ...

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