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Hello colleagues. There is such a lens with an interesting transitional tube. Inside the tube is a corrugation.Changes focus. Photar 50 is screwed into the tube / Can you tell the purpose?

 

Hallo Kollegen. Es gibt ein solches Objektiv mit einem interessanten transienten Tubus. Das Innere des Tubus ist wellig.Ändert den Fokus. Der Photar 50 wird in den Tubus geschraubt / Können Sie den Termin sagen?

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Edited by leifoto
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vor 6 Minuten schrieb leifoto:

Es gibt ein solches Objektiv mit einem interessanten transienten Tubus. Das Innere des Tubus ist wellig. Ändert den Fokus. Der Photar 50 wird in den Tubus geschraubt / Können Sie den Termin sagen?

Leider ergibt dieses Deutsch keinerlei Sinn. Versuche es vielleicht einmal auf englisch.

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The 16464 part is a focussing tube for macro work on a Leitz Visoflex Mirror Housing for Leica M Cameras. Was used with lensheads of 90 and 135 mm lenses, which could be focussed to infinity. Inside the 16464 is a bellows material shielding the threads to reduce reflections. The Photar lens is made for extreme macro work and normally used on a bellows. It seems you have a setup that allows mounting the photar to the 16464 and thus using it without bellows - I haven't seen this combination before.  Can you post a photo showing the photar mounted to the 16464 ?

 

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5 hours ago, leifoto said:

Hello colleagues. There is such a lens with an interesting transitional tube. Inside the tube is a corrugation.Changes focus. Photar 50 is screwed into the tube / Can you tell the purpose?

You can find more information about the 16464/OTZFO focusing mount here: OTZFO - Leica Wiki (English) (l-camera-forum.com). You have the newer, black version of the 16464. While the Photar has an RMS thread, the front thread of the 16464 is M33 (info kindly provided by @zeitz). The other adapters in your pictures are probably used to adapt the RMS lens to the M33 mount. I do not recognize these adapters. Hopefully someone else can provide more information about these items.

The picture below shows an alternative way of adapting a Photar macro lens to a (silver) 16464 focusing mount. I use the Leitz Wetzlar adapter 042-716.041 to bridge between RMS and L39 and the Leitz New York adapter 16473 to bridge between L39 and M33. I just quickly arranged this combination before work this morning and took a mobile phone picture. This is not a combination I normally use because it hardly generates sufficient extension to bring the Photar to its recommended magnification range. As @dg4mgr already said, a bellows is a more common choice for this purpose. But I often do use the 16464/16473 combination with a Focotar-2 50mm enlarger lens on the Leica CL, for example here: https://www.l-camera-forum.com/topic/335145-kaviar/?do=findComment&comment=4599065.

 

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Moderator: Man moege den Gebrauch der englischen Sprache hier entschuldigen. Der OP scheint versierter in der englischen Sprache zu sein als in der deutschen. Falls das ein Problem ist, dann bitte meinen Beitrag einfach loeschen.

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vor 19 Stunden schrieb Studienkamera:

I use the Leitz Wetzlar adapter 042-716.041 to bridge between RMS and L39 and the Leitz New York adapter 16473 to bridge between L39 and M33.

Danke, ich dachte ich kenne einen Haufen Zeugs aus dem Umfeld, aber den Ring 16473 kannte ich nicht.

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