What adapter is this for

ultraviolet · 09-04-2010, 09:18 AM

I can see one side is M42, but could not see anything similar on the other side.

Last edited by ultraviolet; 06-26-2011 at 11:00 PM.

Adam · 09-04-2010, 09:38 AM

Doesn't look like a Pentax adapter to me. At first, I was going to say 6x7 to m42, but it's not wide enough or deep enough.

ultraviolet · 09-04-2010, 10:10 AM

I got this with a Spotamatic package. It has A to M switch like M42 lens which transformed to a relatively complex mechanism, has four notch opening compare to usual three for most of the mount I can find. The aperture ring is also confusing.

**boriscleto** · 09-04-2010, 11:03 AM

I think it is an adaptor for Miranda bayonet lenses. It's the only 35mm 4 claw bayonet I know of. The Miranda system had a dual mount, bayonet and M44 screw.

http://www.camerapedia.org/wiki/Miranda

Bronica used a 4 claw bayonet for its 6x7 but this adaptor isn't nearly big enough for that.

http://www.camerapedia.org/wiki/Bronica

If it is a Miranda adaptor it won't infinity focus. Miranda had a shorter registration distance then Pentax.

Last edited by boriscleto; 09-04-2010 at 12:50 PM.

ultraviolet · 09-04-2010, 05:31 PM

Thanks boriscleto & Adam.
Boriscleto, looks like Miranda has male claw on the camera body & Bronica though, as you said, it's too wide but has the male claw on the lens. The adapter I have, can accept male 4 claw. I think more research is needed to identify it. Boriscleto provided some very nice clue, please keep the search on, I am keeping it too. I am just curious about it may have no practical use of it these days.

Steinback · 09-04-2010, 06:01 PM

My first guess was a Soligor or Vivitar T4 adaptor, but I double checked mine and it has 3 prongs instead of 4 and the female mount is on the lens side.

**boriscleto** · 09-04-2010, 06:15 PM

I think I've got it this time. Leica M bayonet.

Leica M mount - Wikipedia, the free encyclopedia

Or maybe Contax RF / Nikon S-mount.

ultraviolet · 09-05-2010, 09:10 AM

It is the closest match so far, thank you Boriscleto for the research. I tried to find adapters for Leica M mount but did not see any reference yet similar to this adapter.

**boriscleto** · 09-05-2010, 09:56 AM

Any non corrected adapter for Leica M would be of limited usefulness. The Leica registration distance is so small that focusing would be macro only.

**Lowell Goudge** · 09-05-2010, 02:02 PM

To me I also think Miranda mount

09-04-2010, 09:18 AM	#1
ultraviolet Pentaxian Join Date: May 2010 Photos: Albums Posts: 687	What adapter is this for I can see one side is M42, but could not see anything similar on the other side. Last edited by ultraviolet; 06-26-2011 at 11:00 PM.

09-04-2010, 09:38 AM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	Doesn't look like a Pentax adapter to me. At first, I was going to say 6x7 to m42, but it's not wide enough or deep enough. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

09-04-2010, 10:10 AM	#3
ultraviolet Pentaxian Join Date: May 2010 Photos: Albums Posts: 687 Original Poster	I got this with a Spotamatic package. It has A to M switch like M42 lens which transformed to a relatively complex mechanism, has four notch opening compare to usual three for most of the mount I can find. The aperture ring is also confusing. Last edited by ultraviolet; 09-04-2010 at 10:36 AM.

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09-04-2010, 11:03 AM	#4
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	I think it is an adaptor for Miranda bayonet lenses. It's the only 35mm 4 claw bayonet I know of. The Miranda system had a dual mount, bayonet and M44 screw. http://www.camerapedia.org/wiki/Miranda Bronica used a 4 claw bayonet for its 6x7 but this adaptor isn't nearly big enough for that. http://www.camerapedia.org/wiki/Bronica If it is a Miranda adaptor it won't infinity focus. Miranda had a shorter registration distance then Pentax. Last edited by boriscleto; 09-04-2010 at 12:50 PM.

09-04-2010, 05:31 PM	#5
ultraviolet Pentaxian Join Date: May 2010 Photos: Albums Posts: 687 Original Poster	Thanks boriscleto & Adam. Boriscleto, looks like Miranda has male claw on the camera body & Bronica though, as you said, it's too wide but has the male claw on the lens. The adapter I have, can accept male 4 claw. I think more research is needed to identify it. Boriscleto provided some very nice clue, please keep the search on, I am keeping it too. I am just curious about it may have no practical use of it these days.

09-04-2010, 06:01 PM	#6
Steinback Veteran Member Join Date: Jan 2008 Location: GTA, ON, Canada Photos: Gallery \| Albums Posts: 1,673	My first guess was a Soligor or Vivitar T4 adaptor, but I double checked mine and it has 3 prongs instead of 4 and the female mount is on the lens side.

09-04-2010, 06:15 PM	#7
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	I think I've got it this time. Leica M bayonet. Leica M mount - Wikipedia, the free encyclopedia Or maybe Contax RF / Nikon S-mount.

09-05-2010, 09:10 AM	#8
ultraviolet Pentaxian Join Date: May 2010 Photos: Albums Posts: 687 Original Poster	It is the closest match so far, thank you Boriscleto for the research. I tried to find adapters for Leica M mount but did not see any reference yet similar to this adapter.

09-05-2010, 09:56 AM	#9
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Any non corrected adapter for Leica M would be of limited usefulness. The Leica registration distance is so small that focusing would be macro only.

09-05-2010, 02:02 PM	#10
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,888	To me I also think Miranda mount