If that Skopar is marked in centimeters, that would make it a prewar lens. I don't believe Voigtlander (the original Voigtlander) made lenses in LTM, so it's either an adapted lens or it's an enlarging lens, as another person stated.
Regarding the cleaning marks, I think that you'll have to shoot a test roll. With some lenses, it might be noticeable in every photo. With other lenses, it might be noticeable only in certain situations.
I was a little haphazard and shot a my first roll with the camera and lenses at a local zombie walk on the 3rd. I used the Summarit and the pair of lenses I already had - a J12 and an I64 LD. I am usually a little more precise when testing new gear but I was excited to test a bunch of stuff. The exposure was botched badly on a few of the shots. I was going back and forth between the IIIc and an Autocord loaded with slower film. A few of these shots were very ever exposed.
The Summarit results were interesting. I was mostly shooting it between f/1.5 and 2. Here are a few results from it. And no, I have no idea what was going on in this second shot:
The J12 had some flaring(?) but otherwise looks promising:
The I64 needs shimming to focus to infinity but looks promising:
Several of the shots have issues in the corner. They almost look like light leaks, though that doesn't make any sense. I'm assuming flaring for now? The Summarit is definitely in rough shape. It has an interesting effect though. I'll probably mess around with it a bit more to see if the look is worth keeping.
Last edited by Brian Legge; 07-05-2010 at 08:18 PM. Click to view previous post history.
Check for leaks. Seals in good shape?
The back could be shifting around just a bit on bad seals, somketimes leaking, sometimes not.
I think I would get that I-64 shimmed; it looks to be a dandy itieration ...
That's right, a bottom loader. Could the lens mount flange possibly be loose shifting? A control knob seal? The bottomost "flare" has an edge. The other two are in the same place on the frames if both arranged horizontally, in the top left corner, which would be bottom right in the camera, right? And no "flare" at all with the I-64 in one pic, right?