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Need help identifying this lens mount
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PostPosted: Fri Dec 16, 2011 9:05 pm    Post subject: Need help identifying this lens mount Reply with quote
I've searched around but can't seem to figure out what mount this is..

Tried searching here without much luck.
http://members.tripod.com/rick_oleson/index-99.html



http://imgur.com/n0ZxG

Thanks!


PostPosted: Fri Dec 16, 2011 9:30 pm    Post subject: Reply with quote
Looks like a Pentax K mount to me.


PostPosted: Fri Dec 16, 2011 10:03 pm    Post subject: Reply with quote
I'm with Ian. Hard to say from a direct angle, but the flange on the lower right is common to K lenses.


PostPosted: Sat Dec 17, 2011 1:28 am    Post subject: Reply with quote
It certainly looks like Pentax K - the lever and its shield is classic Pentax - but I'm not sure. An OEM Pentax lens has a circular slot and lever on the opposite side to the lever (from 9 oclock to 12 in this picture). I wonder if it's from another manufacturer that uses the K mount, for instance Ricoh or Chinon.


PostPosted: Sat Dec 17, 2011 2:16 am    Post subject: Reply with quote
thanks everyone!


PostPosted: Sat Dec 17, 2011 2:57 am    Post subject: Reply with quote
It certainly looks like a K mount to me as well. I think I see the slot and tab that transmits the aperture selection to the camera but it is on the wrong side. Maybe someone reassembled the aperture actuator tab in the wrong position ?


PostPosted: Sat Dec 17, 2011 9:34 am    Post subject: Reply with quote
Looks like K to me, the bayonet tab + locking groove + aperture lever all match my Pentax M's locations.


PostPosted: Sat Dec 17, 2011 11:27 am    Post subject: Reply with quote
peterqd wrote:
It certainly looks like Pentax K - the lever and its shield is classic Pentax - but I'm not sure. An OEM Pentax lens has a circular slot and lever on the opposite side to the lever (from 9 oclock to 12 in this picture). I wonder if it's from another manufacturer that uses the K mount, for instance Ricoh or Chinon.


Further to this, here is a diagram of the early Pentax K and M mounts, courtesy of Bojidar Dimitrov's Pentax K-Mount Web Page http://tinyurl.com/ccmvcrk



The lens in the picture has the diaphragm actuating lever and shield, on the right hand side of the K/M lenses in the diagram, so it is an auto diaphragm lens allowing wide-open focussing, and not one of the earlier manual diaphragm K lenses (at top right). However, there appears to be no slot on the opposite side, with the stop-down indicator, which is how the lens communicates the aperture setting to the camera for wide-open metering, so it looks as though this lens was intended for a camera without wide-open metering or AE.

I could be wrong, but I don't believe Pentax ever made any K mount lenses or cameras like this. They were making M42 lenses for AE long before the K mount was introduced. It makes me wonder if this might be a Russian K mount lens for a Zenit camera.


PostPosted: Sat Dec 17, 2011 1:26 pm    Post subject: Reply with quote
yup that look like a pentax K mount and from the rear you can see its a 28mm F2 kiron made lens.


PostPosted: Sat Dec 17, 2011 1:30 pm    Post subject: Reply with quote
Smoli4 wrote:
yup that look like a pentax K mount and from the rear you can see its a 28mm F2 kiron made lens.


Now THAT is impressive if true Shocked Shocked Shocked


PostPosted: Sat Dec 17, 2011 6:54 pm    Post subject: Reply with quote
Click here to see on Ebay this is a link for the auction of this lens Wink (ended)
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