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A photographic lens is used to focus the light onto film or a digital sensor. Many cameras have interchangeable lens systems, allowing the photographer to choose the type of lens to use.

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I'm presently using a Pentax 50mm f/1.4 and a Pentax 28mm f/2.8 lens on my Canon EOS 550D with the help of an adapter. Brand name of the adapter is Kiwifotos (jjc). Both of these lenses are great …
answered Oct 14 '13 by praphult