Summicron 5cm 50mm 1:2 - figuring out exact type

Ernst Leitz GMBH Wetzlar Summicron 5cm 50mm 1:2

 

I am trying to figure out which exact type this lens is. It is off a m3 camera

and the lens itself has a screw mount. the screw end goes into a bayonet mount

adaptor, the adaptor fits into the m3.

 

The problem I have is that I do know how to distinguish between a

rigid/collapsible screw mount and rigid/normal bayonet mount

 

In McKeown 2006 edition there 8 summicron lenses. I would like to match it to

the book.

 

Pics of lens to help out

 

http://teamlunchbox.nuclearfallout.net/shahdad/cameras/20%20leica%20m3/m3%20(6).jpg

 

http://teamlunchbox.nuclearfallout.net/shahdad/cameras/20%20leica%20m3/m3%20(7).jpg

 

http://teamlunchbox.nuclearfallout.net/shahdad/cameras/20%20leica%20m3/m3%20(8).jpg

 

http://teamlunchbox.nuclearfallout.net/shahdad/cameras/20%20leica%20m3/m3%20(9).jpg

 

 

 

any help would be greatly appriciated

 

thank you

That's not an adaptor you've got there, it's part of the lens! (the focussing part.) Looks to me like the second Summicron type called the rigid. It came after the first summicron which was a collapsible. Contemporary with the rigid was the dual range. Then in 1969 Leica came out with their first black Summicron that was made until 1979.

What Frank said, and I will add that it looks like a bayonet rigid model, rather than a screw mount. I don't think there's an adapter on the lens either.

Concur and wish to point out that the lens mount is (as it should be) serially numbered to match the lens head.

They call it the 'rigid', it's produced in 1956-1968 and it has 2 variants. The first can

focuss up to 1 meter and the second, up to 48cm or 51cm (later units). The short

focussing models require a special viewfinder called "glasses" or "eyes" that is placed over

on the camera, these models sometimes are also known as Dual Range. I don't find the

catch in your pix that holds these glasses so I guess your's is not a DR lens.

 

I used to own one of these DR lenses.

 

http://www.gregchoongphotography.com/dr.htm

The removable head was to increase it's usability as a macro (close-up) lens on the Visoflex reflex housing. There was also a mount to allow using the lens head as an enlarger lens. Not that it really is optimized as a macro lens at all, it's not corrected for close-up work.

The removable lens cell also was usable via the UOORF with the SOMKY or SOOKY-M for close-up work.

It is an early version of the Rigid. Formula had a slight change and the focus mount changed to wider more fine ribbing/scallops later. They also changed to a more matt finish chrome.

 

A friend did thousands of weddings with a black finish one and he loved it. Other lenses were tried, but he always went back to it.

thanks a lot everyone, greatly appriciated