Third Party DSLR Lens Database

A number of third party companies have been making lenses that work in the Nikon F (DX/FX) and Canon EF/EF-S mounts. 

The big three of these companies making autofocus lenses and that are most available to consumers are: Sigma, Tamron, and Tokina,  But Voigtlander and Zeiss have also been a long term provider of manual focus lenses for these mounts. More recently, we have a number of Chinese, German, Japanese, and Korean optical companies providing additional lenses now, though many of these are also manual focus.

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