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10-01-2014, 08:22 AM   #1
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What are all these Pentax mounts?

I was browsing and saw all of these Pentax mounts and was wondering if someone could tell me which ones will fit without problems and/or adapters on my K50? Its just to know what I could buy etc.


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10-01-2014, 08:24 AM   #2
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All of them fits, some with full automation and some with none.
10-01-2014, 08:43 AM   #3
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Try reading the following two pages (and the rest of the linked sites too) and all will be revealed.

Summary of the K-Mount Evolution, Names, and Features

Pentax K-Mount Lenses Explained: The differences between various Pentax lens series
10-01-2014, 09:05 AM   #4

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All of them will "work" without adapters, i.e. they will mount. Plain K will be completely manual (aperture and focus) and you'll need to use M mode on the camera. If you're new at this I'd stay away from those. KA means automatic aperture, but manual focus -- you can use all camera modes with those. The rest of them are auto-aperture and auto-focus, and some will not have aperture rings (you may have never even had a lens with an aperture ring) but on all but the plain K mounts you'd just set the aperture ring to 'A' and never need touch it again anyway. You can look up particular lenses in the lens database also...

10-01-2014, 09:30 AM   #5
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Check page 261 of your manual. :-)

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