Friday 24 June 2016

sensor size - How does the smaller mirror in APS-C cameras offer these advantages?


As Wikipedia says here



The smaller mirror used in APS-C cameras also allows optical elements to protrude further into the camera body, which enhances the possibilities for wide angle and very wide angle lenses, enabling them to be made smaller, lighter (containing less glass), faster (larger aperture) and less expensive.



How does a small mirror allow the possibilities for wide angle and very wide angle lenses to be enhanced by enabling them to be made containing less glass and larger apertures?





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