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    Re: Carl Zeiss Jena Tessar 150mm f4.5

    Yes, it was made in 1924, and as you can see on the Compur shutter, it came from an ICA camera. The dial-set Compur shutter was used till around 1928, and from then on the rim-set Compur.
  2. Re: Should I return this Dallmeyer Pentac 8" f2.9?

    Autofocus, maybe, and when they write: Autocorrection. They must have bad monitors as well, when they can't see the details like fungus in a lens in the higly enlarged digital photos on the screen.
  3. Re: MF (6x4.5,6x6,6x7,6x9,6x12) B&W film images sharing

    I want to visit that shop and ask about sandblasting.
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    Re: Teach me about Lens Design

    I agree with most of this. And older lens made to be sharp, so not a soft focus lens. I would personally not use shorter focal lengths than meant for the format. Yes, that would introduce...
  5. Re: What's considered "high altitude" when it comes to UV filters?

    I would just use the #15 deep yellow filter. It blocks all UV, cuts through the haze enough to sharpen up the details in the distance and darkens the sky without giving that unnatural look you can...
  6. Re: Bausch & Lomb Planetograph F-8 and "Three Focus" lenses?

    I couldn't find information on the "Three Focus" lens, but it does indeed sound like a triple focus/convertible one, meaning that you can use the complete lens, the front or the back group. If it...
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    Re: Old ICA lens question

    It should have three cemented lens elements in both groups. Is the fungus inside one of those groups, in the balsam between two cemented elements? Yes, upload photos. This is interesting.

    5,4 is...
  8. Re: Steinheil Munchen Orthostigmat 13,5cm

    Yes, and yes. But it doesn't have a separate scale for using the rear lens group.
  9. Re: Steinheil Munchen Orthostigmat 13,5cm

    I have a Steinheil Orthostigmat in Compur from the 1920's and it's a 6,8 lens.
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    Re: Old ICA lens question

    Yes, those are metal blades. Excellent. Most of my Compurs of that style have the paper blades. The risk with a dislodged aperture blade is that it can move about and cause more blades to dislodge....
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    Re: Old ICA lens question

    It should be an easy fix for a repariman. It's a good idea to tell that person that this version of Compur has the delicate paper aperture blades so he doesn't try to dip the whole shutter in a...
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    Re: Old ICA lens question

    Yes, it's a problem. The pivot pin of one of the aperture blades had become dislodged from its hole. The aperture blades in this shutter are made of treated paper and are easily damaged.
  13. Re: Weird, Odd, and Unlikely Lenses - Recommendations Please

    That place is considered evil by some, comparable to a certain software company or the name of a scottish play one should never say in a theatre.



    And that too!
  14. Re: Weird, Odd, and Unlikely Lenses - Recommendations Please

    You can find achromats in different focal lengths on a certain auction site.
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    Re: Urgent lens understandings needed

    It certainly does. It was the shape of the ejecta from the craters that looked like the web like pattern that fungus produces. When I scrolled down further it became clear that it wasn't fungus, but...
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    Re: Urgent lens understandings needed

    Pere Casals, when I scrolled down and saw the first inch of the Moon photo I thought "Man, that's a bad case of fungus".
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    Re: Schneider Lexar lens?

    I got a reply from Schneider: "Lexar" was a brand name owned by Nagel, and in the Schneider records it's only called "Nagel-Anastigmat" and is a lens very similar to their own Xenar. That cleared it...
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    Re: Can the search system be improved?

    Thanks for the tip! Not perfect, but it does make it easier to find posts that you know are "hidden" somewhere in the threads. :)
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    Re: Can the search system be improved?

    I often start with Google for the search to begin with, by typing in the name of the lens and do an image search. I can, for example, type in "Eurynar" and in the search results I might see a...
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    Can the search system be improved?

    I find it extremely annoying when I search for, for example, the name of a certain lens, and the result I get is a list of topics. Some of the topics have tens and sometimes hundreds of pages, so to...
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    Re: Schneider Lexar lens?

    No, it says "Lexar" clearly on the lens. Here's the auction for the camera: https://www.ebay.de/itm/382448849067
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    Re: Schneider Lexar lens?

    The name Isconar/Jsconar was used long before that. Joseph Schneider & Co -nar.
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    Re: Schneider Lexar lens?

    Good point, and I checked an old Xenar and it's also engraved "Jos. Schneider & Co Kreuznach". I have sent Schneider Kreuznach an email, and perhaps they have information about the "Lexar" hidden in...
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    Re: Schneider Lexar lens?

    That is one possibility. It could also have been renamed for a very short while because of a legal dispute, or perhaps "Jos. Schneider & Co" stands for what would become "ISCO"?
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    Schneider Lexar lens?

    There is a Nagel plate camera from the 1928/29 for sale somewhere, and the lens is a Jos. Schneider & Co Kreuznach Lexar 4,5/135. I can't find information about this lens online. I suspect it's a...
  26. Re: Rietschel Linear, eight element lens

    Yes, but then it wouldn't be original. I'm contemplating it, though. The front standard on the camera is a bit bent and has zink pest, so I doubt it's worth restoring it anyway.
  27. Re: Rietschel Linear, eight element lens

    The shutter body is 66mm, same as for the 135mm Tessar. The diameter for the thread is 33mm, which is a little too big or too small for the retaining rings I have for shutters of this size.

    I...
  28. Rietschel Linear, eight element lens

    I bought a Rietschel Linear 4,8/120mm that belongs to a 9x12 Rietzschel Clack camera, just for fun. It has eight elements in two groups, faster and better corrected for coma than the Dagor. The 120mm...
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    Re: Filters---8, or 12? or 15?

    Too dark skies look unnatural, for example when the sky is already deep blue and you use an orange or a red filter that gives you white clouds on an almost black sky. A #3 or #8 yellow would look...
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    Re: Old G.Rodenstock Camera

    Ritchie, I see what you mean by "milky". :p

    I don't see that on the groundglass with either the 4,5/135 or 3,5/150 Eurynar I have. I also have the Goerz Dogmar 6,3/135 that has the same dialyte...
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    Re: Old G.Rodenstock Camera

    Mine arrived yesterday. The shutter seems to be a Compur #2, working nicely on all speeds. The outer diameter of the lens is 53mm. The lens elements cleaned up great, and I have 14 fitting holders.
    ...
  32. Re: Any experience re-silvering the mirror inside a reflex viewer

    Check out http://www.clausing.com/ and send them an email. Silver is the most reflective coating, aluminium a tiny bit less but more durable. Ask if they put a SiO2 protective coating over the silver...
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    Re: Two down one to go . . .

    To complicate it: The S-Xenar 50/2,8 was made under the Xenon name for the Kodak Retina for a couple of years before the war. It was a Tessar-type lens with the front element split in two. A very...
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    Re: Two down one to go . . .

    The Xpres is excellent. I regret selling my Ensign Selfix 6x9 with its uncoated Xpres. Front cell focusing, but it was sharper than the Ikontas' Tessar from that period. Built like a tank and with...
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    Re: Old G.Rodenstock Camera

    Eurynars are easy to take apart to clean the individual elements, so perhaps one of the middle elements has been put back the wrong way? It is supposed to be very sharp and look razor sharp even wide...
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    Re: Old G.Rodenstock Camera

    I've just bought the same camera and it will probably arrive next week. What made me buy it on impulse is the fact that it has the fast 150mm f:3,5 Eurynar. The winter here above the Polar Circle is...
  37. Re: Goerz Dogmar Lens Question - Soft Focus?

    Aha, so your test was hiding in this thread, Ian! It should be a sticky, because it's very interesting and telling. It's easy to see why the Tessar became the standard lens for many. Fast and good...
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    Re: Zeiss Achromat 18cm lens

    The font used looks like the one they used in the 1920's and early 30's.
  39. Re: G.Leitmeyr Munchen Doppel-Anastigmat Sytar 4,5/135 mm lens

    I can confirm that it is a dialyte. I had a 4,5/105 mm Sytar for 6x9 that I took apart to clean. Nice sharp lens, but with eight uncoated surfaces so I wouldn't use it for colour.
  40. Re: ICA doppel-anastigmat litonar 16.5cm 4.5 in Compur shutter info?

    You don't cock it for Z and B on these old Compurs. You only cock it on the M setting, because then you have engaged the escapement (the timing mechanism).

    It's fun that even things that have...
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