Using Manual Lenses on the Pentax K-3 Mark III
Vintage lenses on modern cameras
By FozzFoster in Articles and Tips on Dec 7, 2021

We all know how awesome the K-Mount is, right? Pentax has used the same flange distance for it's lenses since the 1960s. This means that all the classic M42 screwmount lenses and all the manual-era K-Mount lenses are entirely compatible on modern digital Pentax camera.
This opens a healthy secondhand market that provides access to affordable lenses for new and experienced photographers alike. Moreover, the Pentax K-3 III supports new features to make manual lenses even easier to use, such as automatically stopping down to meter and recording aperture metadata.
This PentaxTips video demonstrates the steps required to get your Pentax K-3 Mark III setup to use these manual lenses:
You can learn more aobut the camera in our Pentax K-3 III in-depth review. Or, if you'd like to verify that a particular lens fits, stop by the lens compatibility checker.
Confused about lens terminology? Check out our article on the evolution of the Pentax K-mount lineup.
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