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05-04-2021, 11:41 AM   #1
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F-mount (Nikon) to K-Mount (Pentax) and visa versa

I have both a Nikon D80 and a Pentax K-3. I'd like to swap lenses back and forth between these two cameras. Is there a K-Mount to F-Mount adaptor, and a F-Mount to K-Mount adapter that I can purchase?

05-04-2021, 01:23 PM   #2
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Not any that is worth using. Optically corrected adapters are manual only and are short tele-converters.
05-04-2021, 01:49 PM   #3
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there is a way to do part of this:

swap the mount on the Pentax to an Adaptist mount...
05-04-2021, 04:07 PM   #4
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F mount will go on a kmount but not secure. You can use it but only good for trying. I did use a nikkor 100mm2.5 on my pentax for a few weeks until it fell off the camera and smashed.
The mounts are too close. There is no room for an adaptor to fit between them.

05-04-2021, 04:30 PM   #5
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The flange distance of the Nikon is a hair longer than the one of Pentax, just to get things messy you know. I have looked into this myself and nothing worthwhile is to be found. Unless you want to use optical adapters, but that's a whole different story.
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