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Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.

Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.
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Strange "tessar"?
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Posted: Mon Dec 23, 2013 9:57 am
Post subject: Strange "tessar"?
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Posted: Mon Dec 23, 2013 9:57 am
Post subject: Strange "tessar"?
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Found that lens on German ebay. Seller says it is some kind of tessar(by "t" on front and same optic formula), in m42 mount, have fixed f4 aperture, without focus ring, but sharp all way from 6 meters to infinity.



Interesting, is it worth for photo shooting, like landscape or architecture?


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Posted: Mon Dec 23, 2013 12:07 pm
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Posted: Mon Dec 23, 2013 12:07 pm
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Does this lens have a focusing helicoid? It looks like an enlarger lens to me. If it is, it is more likely to be a triplet then a Tessar (which does not me it will be any less good). It also looks to have some coating damage on the front element. I think 50mm is too long focal length for landscape work.

Mark


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Posted: Mon Dec 23, 2013 12:50 pm
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Posted: Mon Dec 23, 2013 12:50 pm
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Engraving looks a bit cheap, possibly a lens for a surveillance camera?
Fixed focus distance is an argument for that type of cam.

Thomas


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Posted: Mon Dec 23, 2013 1:00 pm
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Posted: Mon Dec 23, 2013 1:00 pm
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SXR_Mark wrote:
Does this lens have a focusing helicoid? It looks like an enlarger lens to me. If it is, it is more likely to be a triplet then a Tessar (which does not me it will be any less good). It also looks to have some coating damage on the front element. I think 50mm is too long focal length for landscape work.

Mark

On image it have some removable ring...
Quote:
keine Blende, keine Fokussierung - der genaue Verwendungszweck des Objektivs ist mir unbekannt; evtl. ein Messobjektiv aus der Produktion oder aus einer Werkstatt?
M42-Gewindeanschluss mit Abstandshalterring aus Stahl, aufgeschraubt auf eine M42-Kamera wird alles von ca. 6m bis unendlich scharf dargestellt


Seller says it is i bit of fungus and dust inside. Maybe its possible to clean.

*in my experience, 50mm is kinda well for long distance landscape photos or panoramas. Like this, using Canon 50mm 1.8 II - http://ostin.deviantart.com/art/Volga-413357595 taken from high hill over wide river.
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