What is this lens?

<p>Please, do you know what is this lens and what coverage it has?<img src="https://c2.staticflickr.com/6/5337/30197501513_1dfecc70c4_o.png" alt="" /></p>

<p>Thank you</p>

<p> </p>

It looks like some dort of process lens.

<p>Thank you, can be used such a lens for large format photography, for instance for landscape ?<br>

What can cover such a lens approximately ?</p>

<p>I'm thinking this is a lens used in some sort of an optical device like a film recorder or similar. No matter its provenance, it's usefulness as a taking lens is unknown without more information.</p>

<p>It doesn't appear to have a diaphragm, which presumably means it's at f/0.8 all the time. Not going to be very sharp. I presume the focal length is 125mm. <br>

Make a cardboard lens board for it and see what happens. No idea what the coverage would be.<br>

Probably was for some sort of film recording device, maybe for recording CRT displays of brief events. Or maybe from a photocopier.</p>

<p>Thank you, <a href="http://flexarety.rajce.idnes.cz/Objektiv_0.8_125/">I have found more pictures of that lens. </a><br>

Maybe you can recognise more from that pictures. <br />Maybe I would like to buy it but I would like to know an aperture and approximate coverage.<br />The seller has no clue about the technical data of that lens.<br>

Thank you</p>

 

Looks like it came out of some type of copy machine or other type scanner.

<p>It looks like one of the fast internal TV lenses that usually go for $5 to $15 bucks and make good paperweights. The coverage is very small and the only way it could be used is possibly as a limited range very macro lens on 4x5 but only if your subject is flat as there is 0 depth of field.</p>

<p>Thank you a lot, the seller offers it for 150,- USD</p>

You should wish the seller a good day.

<p>Thank you Bob</p>

<p>It's a lens off an x-ray machine. Not too useful for traditional photography. They weigh a ton, and coverage is relatively small, no large format photos with this thing. I have a couple, and they make for interesting macro lenses when free-handed. There are people that ill pay more then the seller's asking price; I sold 3 of them for $400 each, and I bought them for $10 each. People pay for that f/0.8 (mine were f/0.95 and f/0.75). But they do make good paperweights!</p>