Help identify a strange Summicron 35mm 8-element

[busyx2]

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Hi

This is a local Summicron 35 8-element available locally without the goggles.  The serial number 1687XX (masked in the picture for privacy) checked out to be right vintage

What is really strange is that it does not belong to any of the known 8-element variants to my knowledge.

The close focus marking on the lens is 0.7, but it has a LTM mount.

As far as I know, if this lens was modified from a goggled Cron, then the close focus marking should be 0.65, 0.7

But if this is a LTM then the close focus marking should be 1m.  

The focus coupling on this lens worked well and the focusing was spot on, and there is no copper line from the goggle removal.

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Edited February 16, 2022 by busyx2

[wizard]

post deleted

Edited February 16, 2022 by wizard
addition of text

[wizard]

vor 4 Stunden schrieb busyx2:

What is really strange is that it does not belong to any of the known 8-element variants to my knowledge.

This item was originally a non-goggled M mount lens. The factory fitted LTM to M adapter was removed (as evidenced by the recess between the LTM adapter now mounted to the lens and the rest of the body of the lens), and it seems that you have now fitted a regular LTM to M adapter to this lens. In any case, this is not an original scerw mount lens, so beware of paying a (higher) screw mount lens price.

Oh, and btw, I have just noted that this lens does not appear to be a Summicron lens either. From the look of the front element, I am 99% sure that this is in fact a Summaron 2.8/35mm lens. How someone managed to fit the Summicron's aperture ring to this lens is beyond my knowledge, but if you compare the front of a Summicron 35 version 1 to the front of a Summaron 2.8/35, you will quickly see what I mean. The diameter of the front lens element of the Summicron is visibly bigger than that of the contempory Summaron.

Best,

Andy

Edited February 16, 2022 by wizard
addition of text

[M3Tom]

vor 3 Stunden schrieb wizard:

the Summicron's aperture ring

Not only the aperture ring, but also the ring with the depth of field scale is from the Summicron. Looks strange....

Greetings from Stuttgart
Tom

[wizard]

vor 43 Minuten schrieb M3Tom:

Not only the aperture ring, but also the ring with the depth of field scale is from the Summicron.

True. So somebody must have fitted the optical cell of a Summaron 2.8/35 into the body of a Summicron 2/35. Since a Summicron 35 v1 sells for considerably more than a Summaron, and since an LTM Summicron sells for a lot more than an M mount Summicron, there is a certain logic to be seen here. Of course, there is always the possibility that an error has occurred in a lens service place, with two very similar lenses having been mixed up, but I'd still say this particular lens smells quite a bit (and not good).

[wizard]

vor 9 Stunden schrieb busyx2:

This is a local Summicron 35 8-element available locally without the goggles.

I did not realize this when I initially responded to your post, but it seems you have erroneously posted your inquiry in the German language section of this forum. To receive more answers, you may wish to repost in the international part of this forum, where English is the main language.

Andy

[busyx2]

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Yes, I re-posted this to the International side.  Thanks for pointing out.  Please add your comments over there.

https://www.l-camera-forum.com/topic/329879-help-identify-a-strange-summicron-35mm-8-element-re-posted-in-international-forum/