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  1. Wista loupe: how adjustable the focus is, and "duct" type loupe alternatives.

    Good morning! I am considering buying a Wista duct-type loupe (picture below), which I believe should be high 12-15 cm approximately. I wonder (and ask) if its focus is *widely* and by *widely* I...
  2. Re: Rodenstock Imagon Tiefenbildner 250mm h=5.8, some questions.

    Dear Bob, I appreciate your experience at Rodenstock USA, as well as your commitment on this forum, believe me. However, the law of physics cannot be overridden and there is no way that while...
  3. Re: Rodenstock Imagon Tiefenbildner 250mm h=5.8, some questions.

    Bob, I don't get why you take this thing with such religious orthodoxy. This is possibly the third time that you repeat these same things, constantly contradicted by evidence. The whole world used...
  4. Re: Rodenstock Imagon Tiefenbildner 250mm h=5.8, some questions.

    With some deep web search I could finally come up with a picture of a 250mm Imagon with what looks as a factory-engraved aperture dial. Full aperture on Compound 3 shutter reads f:5,5. That's...
  5. Re: Linhof 6x9 Super Rollex for 4x5'' Technika, how much is it thick?

    Thank you very much, that's more than sufficient!
  6. Linhof 6x9 Super Rollex for 4x5'' Technika, how much is it thick?

    I am designing and building a custom wooden case for my Linhof Technika 4x5'' setup. At present time I own a 6x9 rollfilm holder made by Horseman for standard Graflok backs, which I thought was a...
  7. Re: Rodenstock Imagon Tiefenbildner 250mm h=5.8, some questions.

    Quick update.

    I've had the shutter checked professionally and it worked absolutely perfectly. The technician said it was even a little bit faster than its nominal values (like 1/98th of second...
  8. Re: Rodenstock Imagon Tiefenbildner 250mm h=5.8, some questions.

    OK. And how is this possible, from a physics standpoint, since part of the light reaching the front lens is being blocked?
  9. Re: Rodenstock Imagon Tiefenbildner 250mm h=5.8, some questions.

    Thanks to anyone who participated in this thread with comments, images and documents (yes, I do read french!).

    In my unity, the shutter and the diaphragm are both in front of the lenses as someone...
  10. Re: Rodenstock Imagon Tiefenbildner 250mm h=5.8, some questions.

    It doesn't appear to be so, I'm afraid. A search with "Imagon" as keyword and "Bob Salomon" as author links to this sole thread, where you did not answer to any of these questions:
    ...
  11. Rodenstock Imagon Tiefenbildner 250mm h=5.8, some questions.

    So, after having long desired to own a portrait-specific lens, I could finally purchase the 250mm Rodenstock Imagon, in Compound 3 shutter. :D I would like to ask few questions to fellow...
  12. Re: Linhof wide angle focusing device - non parallel?

    Thanks a lot for replying and thanks a lot for checking, Bryan! I figured it was likely not normal, but I couldn't be sure as I never saw another one of these devices.
  13. Linhof wide angle focusing device - non parallel?

    Gentle fellows,

    I recently acquired a Linhof wide angle focusing device. This acessory is very sturdy and seems absolutely impossible to break or bend, BUT it seems to me that the front standard...
  14. Re: Differences between 150mm Apo Sironar S and N

    Rui, that's quite a different lens, a way between a "normal" and a "wide angle". To achieve the wider angle of view (a whooping 80° for the 150mm!!!) one more group has been added. It's actually a...
  15. Re: Differences between 150mm Apo Sironar S and N

    Bob, gently, if there's something I might not have grasped, please expand. Otherwise, the curves at f:22 seem only to confirm that the N is sharper. Looking again at the graphs for the 150 mm focal...
  16. Re: Differences between 150mm Apo Sironar S and N

    Well I'm not surprised at all, since - if you had patience enough to read my posts - this is exactly what the MTF graphs seemed to suggest. ;)
  17. Re: 210mm APO Symmar lens...

    Dean, should you want to save some time and work, user "heavystar" sells on that-famous-site-that-used-to-do-auctions Graphic replica lensboards that he makes. They're new, well made, not expensive...
  18. Re: Differences between 150mm Apo Sironar S and N

    Thanks for the second link (the first was for beginners) but I couldn't seem to find any paragraph about how a different ratio has to be interpreted in side-by-side comparison of MTF charts.

    MTF...
  19. Re: Differences between 150mm Apo Sironar S and N

    I trust his patience on your word, but if someone has to explain with great patience the same thing over and over again, this is usually not because people is stupid but because there is something...
  20. Re: Voigtlander Apo-Lanthar: does it still stand up to today quality?

    No excuse needed, I'm glad if this thread was useful to set other questions and issues on the fly.

    As someone alluded to "faulty" units with non better described "unsolvable" problems, I renew to...
  21. Re: Differences between 150mm Apo Sironar S and N

    So, in simple words (correct me if I'm wrong), one can't simply put the MTF graphs of the S and the N side by side and compare, correct? Actually, just by looking at the curves and ignoring the 1:20...
  22. Re: Voigtlander Apo-Lanthar: does it still stand up to today quality?

    Thanks for the link, Renato. I know that article and I have it (printed on paper!) at home.
  23. Re: Voigtlander Apo-Lanthar: does it still stand up to today quality?

    First of all, thanks everybody for your interesting replies and comments. Most of your words really seem to describe well what I have under my eyes. They make a lot of sense.

    To those who wrote...
  24. Voigtlander Apo-Lanthar: does it still stand up to today quality?

    Good morning everybody.

    I usually don't go for myth-status super-expensive lenses. Although I have always desired to own a Apo-Lanthar, it demanded so much money that it was one of those dreams...
  25. Re: Schneider-Kreuznach Angulon and Super Angulon.

    Thank you Ole, I figured not all pictures would come out that way.

    I am having problems with myself to detect which image I dislike less at full aperture. The older lens show a terrible loss of...
  26. Re: Schneider-Kreuznach Angulon and Super Angulon.

    Thanks to everybody for the detailed and interesting replies.

    Thanks especially to Ole: the photographs you have uploaded speak for themselves. A very interesting comparative test indeed.
  27. Schneider-Kreuznach Angulon and Super Angulon.

    Gentle fellows,

    I remember reading some time ago that the Super Angulon has been a significant improvement by Schneider over the "older" Angulon, which if I remember correctly had problems with...
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    Re: Flying US to Italy

    Same here: I did the opposite travel (Italy to States and back) and the film came out just perfect.
  29. Durst Laborator 1200 + CLS 450; user's manual?

    Good morning, gentlemen. As you may have guessed by the title, I recently had the opportunity to buy the BIG ONE. Seen my long experience with Durst, I thought that the thing would be a joke to...
  30. Your opinion on two view camera's books

    Thanks for all the insights. Maybe I should have had specified that I'm not exactly a beginner and that I currently own a Linhof setup. What I'm currently wondering is if I should stuck with the...
  31. Your opinion on two view camera's books

    Gentlemen,

    first let me congratulate once again for the politeness with which conversations are held on this forum. It is, so far, the very last that I still read with pleasure on occasion.
    ...
  32. Processing film to completion: my personal drama

    Oh, hi there Donald, I recall you being on photo.net and APUG. I don't think you got the point exactly: I'm not saying that I expose randomly and push develop to death. That would of course lead to...
  33. Processing film to completion: my personal drama

    Gentlemen, I'm in doubt. I've spent all of my life in being very picky on temperature and time of process and I've applied the Zone System every time I could. However, I recently switched to a...
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