Equivalent focal length for MFT lenses

Started Apr 12, 2013 | Discussions thread
slimandy Forum Pro • Posts: 17,071
Re: Equivalent focal length for MFT lenses

You need to clarify the question a bit. Are you using them both on the same body?

Bear in mind the focal length does not change. The difference comes from the size of the sensor, not the length of the lens. A 600mm lens is twice as long as a 300mm lens.

A 300mm f6.7 lens on MFT will give an equivalent field of view and depth of field as a 600mm f13 lens on FF.

If you use a 600mm f6.7 lens on MFT it will give you the equivalent of 1200mm f13 on FF.

If you are using a 600mm f6.7 on FF and want to replicate it on MFT you will need a 300mm f3.5.

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