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Did you ask Schneider-Kreuznach for information? They are always very helpful, checking numbers etc.

Very interesting lens, I wish I had one!

Lex

 

I wrote to Schneider-Kreuznach and the only info they give me is that this lens was produced in 1949. They have no other info of it :confused:

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Alessio, when they told you no information was available but the production year, they probably don't have it. At Schneider they are very helpful, like they scanned a folder of some lenses for me. But these companies don't have a proper archive or historical department, so lots of info tend to disappear, unfortunately.

Lex

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Alessio, when they told you no information was available but the production year, they probably don't have it. At Schneider they are very helpful, like they scanned a folder of some lenses for me. But these companies don't have a proper archive or historical department, so lots of info tend to disappear, unfortunately.

Lex

 

Of course! They answer me very quickly and gentle. I understand that thay have not an archive.. But it's a pity that a long story productor haven't an archive of information. That's means history will disappear in future! And I love history :)

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  • 5 years later...

Hello everybody! Found such a lens. What do you think it is and why? Could this be an early version of the lens later made for Leica cameras?

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9 hours ago, derleicaman said:

Looks more like a lens made for a plate camera, or large format camera. The mount is too short to be used on a ltm camera. Most likely screwed into a mount board for a large format camera.

I thought so too, judging by the appearance and mount. However, the lens has an extremely small flange distance - about 25mm and a coverage circle with a diameter of 45mm, which is fully suitable for a 35mm rangefinder camera. Therefore, I cannot understand its purpose and why I could not find other similar ones.

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I was build around 1941, hard to tell what it was used for dependig on the mount. It has no helicoid for focusing, mabe the back of the barrel was lost. Could be for some special purpose either, Roentgen-screen-documentation or special film camera. You could check the diameter of the image-circle and how much space you have to film plane.

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I had one of the lenses in the original post.  My research at the time just indicated that Schneider made some xenon's in LTM.  But, not very many.  The lens performed much as expected, but had a bit of haze.  Sold it before cleaning...to an excited collector.

The lens in the recent posts looks like an LF lens for sure.  

 

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The first lens shown has a helicoid for focusing, the second not but looks just like a lens-head like the Hektor 13,5 has; with 50 mm focal length you can perhaps cover a single film-plate but I would not call that LF. Back than you would use a 1.5-lens only if you need the speed.

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21 hours ago, romanus53 said:

I was build around 1941, hard to tell what it was used for dependig on the mount. It has no helicoid for focusing, mabe the back of the barrel was lost. Could be for some special purpose either, Roentgen-screen-documentation or special film camera. You could check the diameter of the image-circle and how much space you have to film plane.

I'm sure the lens was without a back. It was kept in storage all the time. And in the original box. With the lens there was a ring on the external thread with four holes. But it is not with me now.

The back focal distance from the edge is about 23mm, from the large thread about 30mm. The coverage circle is about 5cm in diameter, so it covers the diagonal of a full frame (45mm) without vignetting.

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20 hours ago, rfaspen said:

I had one of the lenses in the original post.  My research at the time just indicated that Schneider made some xenon's in LTM.  But, not very many.  The lens performed much as expected, but had a bit of haze.  Sold it before cleaning...to an excited collector.

The lens in the recent posts looks like an LF lens for sure.  

 

However, it has a small coverage circle and a focal distance, which is why it looks like a large format lens...

Edited by Lexx
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  • 2 months later...

Hello everyone! Here are some photos from an early xenon lens I wrote about. And a photo of a lens with a manufactured helicoid.

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Nice job that you made a working lens out of it. Interesting results! Still fascinating what the original purpose was for. It was in a batch with only 4 other lenses and in the months immediately before and after no such lens of 5,5 cm was produced. So a special purpose seems obvious, but which purpose?

Lex

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