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Adapters that don't fit <rant>
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PostPosted: Fri Apr 23, 2021 8:57 pm    Post subject: Adapters that don't fit <rant> Reply with quote
Today I received my K&F adapter for Olympus PEN-F (the "half frame" 1960's version) mount to M4/3. An actual PEN-F lens is still on the way but I do have an original Olympus Exakta to PEN-F adapter which should be functionally the same as a lens.

First thing I do of course is eagerly test the Olympus EXA to PEN-F adapter in the K&V PEN-F to M4/3 adapter.

Bottom line: the mounts fit together, but do not rotate to lock. Not even with a little force. It's hitting metal on metal somewhere. Very disappointing. I will wait for the real PEN-F lens to come in, but will be very surprised if it does work. This Olympus EXA to PEN-F adapter is in its original box, and the Exakta side fits like a glove, so I strongly suspect the K&F is too far out of spec. Frustrating!

Any suggestions on a PEN-F to M4/3 adapter that does work? My experience with average cheap Chinese adapters are that they don't always work on the M4/3 side of things. At least not on my E-M1 Mk.II or E-M5 Mk.II. Same with the one Fotodiox adapter I have (a Fuji A/X to M4/3; they confirmed the problem after testing with their own E-M10 and gave me my money back).

Sorry for the rant

Regards, C.


PostPosted: Fri Apr 23, 2021 9:41 pm    Post subject: Reply with quote
Remember Pen F mount is almost same as Nikon F mount, you have to rotate
the lens LEFT when you try to mount. If you know this already, please forget.


PostPosted: Fri Apr 23, 2021 9:53 pm    Post subject: Reply with quote
koji wrote:
Remember Pen F mount is almost same as Nikon F mount, you have to rotate
the lens LEFT when you try to mount. If you know this already, please forget.


I did NOT know this, thank you! I assumed that Olympus would rotate its lenses in a consistent manner, but I guess not. And lo and behold, it now fits perfectly! Nice and tight, but not too tight. You made my day Smile

Also, this is one of the reasons I love this forum. The amount of collected knowledge here is invaluable.

Regards, C.


PostPosted: Sat Apr 24, 2021 1:22 pm    Post subject: Reply with quote
koji wrote:
Remember Pen F mount is almost same as Nikon F mount, you have to rotate
the lens LEFT when you try to mount. If you know this already, please forget.


I can't understand how two manufacturers could come up with the same daft way of working!
Nikon have a good excuse as the F mount is one of the earliest bayonet mounts before everyone else picked the standard way of working.

Thanks for sharing that insight - if I ever get a lens to put on my Pen F teleconverter that info will be very useful.
Thank you!
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