Unique lenses of the SLR and the DSLR cameras

The SLRs are the single-lens reflex film cameras and the DSLRs are digital single-lens reflex cameras. An owner of a DSLR camera always has a huge collection of lenses. The three lenses which he should be having are the Sigma prime of 30mm and three zooms of the Olympus. They are the 40-150mm, 14-54mm and 11-22mm. The modern lenses of the SLR cameras have a film of 35mm and the DSLRs have the sizes of the sensor which are equal to are less than 35mm. - 

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