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03-06-2011, 03:48 PM   #1
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Any lenses adaptable to Pentax 67?

Just curious here; is there any medium format 6x7 system that has a larger register distance than Pentax 6x7/67/67II, that would allow an adapter between the lens and the Pentax with maintained infinity focus? And if, are there any adapters available?

03-09-2011, 06:34 AM   #2
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Alright, the flange distance of the 67 mount is 84.95 mm. That would in fact allow for some other medium format lenses to be adapted! Here are a few mounts with a larger flange distance:

Bronica S2A: 101.7 mm
Rolleiflex SL66: 102.8 mm
Mamiya RZ67: 105 mm
Mamiya RB67: 112 mm

Now, this is interesting! The Rolleiflex SL66 offers a great range of lenses, and they are Zeiss!
Rolleiflex complete lens range. Detailed images and information - www.sl66.com

So, I guess it would be possible to put, lets say a Carl Zeiss 50/4 Distagon, on the Pentax 67.
Yes, the SL66 is "only" 6x6, but it wouldn't surprise me if the coverage is a little bit larger.
There could of course be intereference with the mirror and rear lens element, but with ~17 mm of flange clearance, it's probably OK.

Problem: How to make or get an adapter!

Edit: Uh-oh, I just realized that the SL66 has inbuilt bellows. So the lenses probably goes way beyond the mount, into the camera throat.
03-09-2011, 08:09 AM   #3
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QuoteOriginally posted by Makten Quote
Edit: Uh-oh, I just realized that the SL66 has inbuilt bellows. So the lenses probably goes way beyond the mount, into the camera throat.
Same with both Mamiya 67's, you use a knob on the body to move the bellows back and forth.
For Bronica S2a, the helicoids are separate from the lenses, so that's probably not gonna work, either.
03-09-2011, 08:10 AM   #4
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Martin,

I believe the Bronica S2A also had a built in bellows, however I have seen lenses adapted for the Pentax 67, although it goes far beyond a simple adapter. A couple of years ago, the well regarded 40/4 Nikkor for the Bronica showed up on ebay in a Pentax 67 mount. Years ago it had been adapted by the late great Marty Forscher, who did some incredible custom work on photo equipment. I thought about buying it, but didn't. It sold for about $650. In hindsight, I wish I had bought it.
From time to time, I have seen Pentax 67 bodies which have been adapted to take Hasselblad lenses. There were a couple on ebay a few days ago.
Know any good machinists?

Scott

03-09-2011, 08:26 AM   #5
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Another approach is to simply get a Hasselblad body to mount a large array of Zeiss lenses on but that doesn't earn you any points.
03-09-2011, 08:35 AM   #6
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QuoteOriginally posted by tuco Quote
Another approach is to simply get a Hasselblad body to mount a large array of Zeiss lenses on but that doesn't earn you any points.
Where's the fun in that? Besides, some simply don't care for the square format
03-09-2011, 09:35 AM   #7
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QuoteOriginally posted by surfotog Quote
Where's the fun in that? Besides, some simply don't care for the square format
The fun is hot-swapping backs and vibration-free LS lenses. Amazing what an image editor can do to a square format. Plus you can put on a A16 back and shoot 645 as an option.

Last edited by tuco; 03-09-2011 at 09:48 AM.
03-09-2011, 09:42 AM   #8
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You have to dream sometimes, right?

Yes, of course it's smarter to get a Hassy with Zeiss lenses. But I like the handling of the 67II so much that I had to check out the possibilities out of curiosity. The reason for my interest in Zeiss, is that I own a few ZF lenses for my D700, and the results I get from them are so spectacular compared to Nikon, that I believe the same could be the case when comparing Pentax and Zeiss. Not that I need it though; just for fun!

03-09-2011, 07:49 PM   #9
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as a former Bronica ECTL user, they didn't have built-in bellows so the lenses should be adaptable. Probably involve removing the old mount, some shims and a P67 mount. The Nikkors were very nice - especially the 40 and 50.
03-09-2011, 07:51 PM   #10
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you know, considering the registration difference, I wonder if a P67 mount would just fit overtop the Bronica S mount? Might involve grinding of the S bayonet.
03-09-2011, 11:31 PM   #11
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Hi! Last time I tied of fixing Kiev 60 and want to connect Sonnar 180 Jena to Pentax. My friend make cameras say - take Linhof, its better, and make this adapter. Its helicoid from died Sonnar Jena non MC + Linhof technika Sonnar 180.
Can work nornal then lens shooter open or as central shooter lens.




First test.



Last edited by YoU-PiteR; 03-11-2011 at 12:10 AM.
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