donald_miller5 Posted April 4, 2018 Share Posted April 4, 2018 ?Given the lens but I do not know what it mounts on. Does anyone recognize it. Thanks in advance Don Link to comment Share on other sites More sharing options...
Dieter Schaefer Posted April 4, 2018 Share Posted April 4, 2018 (edited) Praktica B mount. Praktica B (Bayonet) mount and Pentax K mount similar? Edited April 4, 2018 by Dieter Schaefer Link to comment Share on other sites More sharing options...
Jochen_S Posted April 5, 2018 Share Posted April 5, 2018 Not familiar with B-mount but Beroflex used to import that stuff too. - Contacts would be very far off for K-mount. Any markings on the rear cap or aperture ring? Link to comment Share on other sites More sharing options...
donald_miller5 Posted April 5, 2018 Author Share Posted April 5, 2018 I was told it would mount on a Praktica but not on any I have. Also not on any Pentax, Sears, Kiev, Canon, Petri or Zenit I have. The are 3 electrical contacts on it. Link to comment Share on other sites More sharing options...
m42dave Posted April 5, 2018 Share Posted April 5, 2018 (edited) Here is a Praktica BX20. Note the position of the three contacts on the mount and the lens release. Not sure who made the Beroflex lenses. Edited April 5, 2018 by m42dave 1 Link to comment Share on other sites More sharing options...
donald_miller5 Posted April 5, 2018 Author Share Posted April 5, 2018 Here is a Praktica BX20. Note the position of the three contacts on the mount and the lens release. Not sure who made the Beroflex lenses. [ATTACH=full]1239835[/ATTACH] Thanx! Now I am an idiot. I have the BX20 but it had a 42mm thread adaptor on it and it looked like an integral part of the camera. I knew I had a auto Praktika and could not figure out why this would not match with any I had Link to comment Share on other sites More sharing options...
m42dave Posted April 5, 2018 Share Posted April 5, 2018 Thanx! Now I am an idiot I know the feeling... :D I also have the M42 adapter (a Japanese-made one, not original Pentacon) and in fact only use M42 lenses on the BX20, since I didn't want to get into another set of lenses. PB is similar to Pentax K, but not interchangeable with it. Link to comment Share on other sites More sharing options...
donald_miller5 Posted April 5, 2018 Author Share Posted April 5, 2018 I am afraid that my eyesight is just not good enough for the o”dear range finder view finders so I am starting to use more automated features and cameras that I have but did not use. Also I am going to let the shopsr9cess my color photos and use a little more. Portrait 800 with longet lens. So now it is the AE1, Praktika and Rebel film camera. Which many would say is a film camera but not a manual camera. Link to comment Share on other sites More sharing options...
JDMvW Posted April 10, 2018 Share Posted April 10, 2018 Here is a Praktica B rear lens mount However Pentax-K is also similar - (It is said that they were meant to be the same, but somebody flinched) Link to comment Share on other sites More sharing options...
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