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I have a Pentax K50. Looking at a new lens which is advertised as being for Pentax KAF cameras. Will it work on my camera?

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Yes. Pentax has the longest history of keeping lens compatibility. Any K-mount lens will work on the K-50. The mount is descried as KAF, KAF2, KAF3 which corresponds to come refinements done over the years but they are still compatible. Wikipedia has an article explaining all the differences.

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  • Furthermore, the newest lens utilizing KAF4 will also work after a firmware update. – arc_lupus Jun 4 '18 at 16:24

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