G3 heralds the end of APS-C DSLRs

Started May 13, 2011 | Discussions thread
Klarno Veteran Member • Posts: 4,148
Re: well f1 on m43 is not that difficult

MichaelJP wrote:

Also a slight misconception is that a 20mm on 4/3s is 40mm at 35mm equivalent.
In terms of focus convergence it is not.

Most apparent when used in closer up photography - ie how much or noses will look bigger.

Sorry, but the misconception here is yours.

Perspective distortion is a function of distance to subject and nothing else. The focal length only influences magnification, and when you factor in the format, the angle of view.

A foreground element will look just as big relative to a background element at any distance with a 7mm lens as it will with a 50mm or a 300mm lens at the same distance. Regardless of the format.

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