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Forums > Back > new article: Equivalent Focal-Length, Aperture and Speed of Camera Systems
Klaus
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#19
08-23-2016, 12:15 PM (This post was last modified: 08-23-2016, 12:17 PM by Klaus.)
You will find exceptions regarding concrete lens example but this is pointless, really.

 

I can even come up with a mathematical proof:

FF 50mm f/2.8

APS-C: 32mm f/1.8

MFT: 25mm f/1.4

 

What is the diameter of the aperture (in mm)? And what does this mean for the idealized constructions of these lenses ?

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new article: Equivalent Focal-Length, Aperture and Speed of Camera Systems - by Klaus - 08-23-2016, 12:15 PM

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