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  1. Re: Question about Cambo 4x5 back interchangeability...

    Um, er, ah, y'r new adapter is probably a modified Cambo lens board. I could be mistaken, but I think that all 4x5 Cambos take the same boards. At any rate,...
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    Re: Mount a 240 G Claron in a Shutter

    Tom, I have a number of lenses in jes' plain Prontor Press #1 shutters. None in Polaroid Prontor Press shutters of any size. No problems with any of them.

    In general, I avoid "Polaroid" shutters...
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    Re: New lens to me :)

    Peter, chromatic aberration affects sharpness in b/w too.

    For the same prescription, aberrations scale with focal length. The greater the focal length, the larger the aberrations at the same...
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    Re: New lens to me :)

    OP, this site has resources. One, that is somewhat hidden, has links to the information you seek, and more. The first post in this...
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    Re: Enlarger table in 80/20 aluminum?

    Brian, a few thoughts.

    First, 80/20 sells surplus on Amazon at very low prices.

    Second, SKGrimes had, may still have, a product line of camera and copy holders for use scanning books made...
  6. Re: Eastman Ektar 14 inch: serial number and coating

    Alzium? Wozzat?
  7. Re: The Holy Grail of LF Aerial Cameras Unearthed----literally

    This https://www.nytimes.com/2022/10/30/world/canada/yukon-mountains-cameras.html story in the Times says the aerial camera is a Fairchild F-8. http://camera-wiki.org/wiki/Fairchild_F-8

    Holy...
  8. Re: The Holy Grail of LF Aerial Cameras Unearthed----literally

    It isn't even the first. Decades after the first.
  9. Re: Which 360mm lens has the largest image circle

    Are you sure? Arne Croell has published 43 for Apo-Tessars and Nikon claims 45-35, depending on focal length, for tessar type Apo-Nikkors.
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    Re: 4x5 macro advice needed

    Repro-Claron? Just another dialyte type process lens. Artar, Apo-Ronar, dialyte type (there are also tessar type) Apo-Nikkor, ... Buy on price and condition.



    It is a matter of...
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    Re: 4x5 macro advice needed

    Given extension, you can get any magnification you want with any lens. So what?

    Most lenses are optimized for relatively distant subjects. Sometimes very far away, sometimes as close as 20 focal...
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    Re: 4x5 macro advice needed

    Hmm. I avoid UToob. OP, the standard way of focusing a near distances is to set up the lens-camera assembly for the magnification desired and then to focus on the subject by moving the camera-lens...
  13. Re: Which 360mm lens has the largest image circle

    Hmm. 360 mm or so. Covers >= 800 mm.

    OP, you're dreaming. The lens of your dreams is Berthiot's 360/14 Perigraphe VIa, which covers ~ 890 mm at "small apertures." It was cataloged, whether...
  14. Re: Schneider Super-Angulon 75mm and Vignetting on 4x5?

    ic, for the life of me I can't understand your explanation of mechanical vignetting. As I understand it and see it when I play around with w/a lenses, stopping down reduces the exit pupil's...
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    Re: Astragon 360mm f/4.5: What do I have here?

    To tell the difference between a Heliar type and a Tessar type, count reflections.

    The Tessar front cell consists of two singlets, so has four air-glass interfaces and no glass-cement-glass...
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    Re: What is this lens ?

    Per the VM, which isn't always right, it is most likely a Telikon, made for a camera that shot 30x30 cm and covers 31 degrees, which is tight for 30x30.

    OP, if you want more certainty, post the...
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    Re: What is this lens ?

    "hersteller blc" means "manufacturer Zeiss military department." It is a WWII German code. bauart means type.

    Yes, aerial camera lens.
  18. Re: Nikon Nikkor T ED 360mm f/8 Lens Copal 1 with my Tachihara 4x5??

    What is your Tachi's maximum extension? The 360 Nikkor T's flange-focal distance (extension required to focus at infinity) is 261 mm. The 270's is 188 mm.
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    Re: Do you get sentimental about your lenses?

    The 38/4.5 Biogon ex-AGI F.135 that Steve Grimes remounted for me is exactly the same lens as yours. Different mount, that's all. And not an LF lens. When shot on 2 1/4 x 3 1/4, I can see that it...
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    Re: No rangefinder

    Vaughan and ic, these old crocks have been messed with so much that there's no guarantee that the focusing scale in the bed is correct for the lens now fitted.

    OP, if it doesn't have a focusing...
  21. Re: Anyone have any experience with Komura lenses

    See "the list."
  22. Re: Anyone have any experience with Komura lenses

    No. Tokyo Optical = Horseman
  23. Re: Replacement ground glass for MPP MicroPress

    The MicroPress is a Pacemaker Speed Graphic made under license. Yours has a spring back. Measure the size of the recess that accepts the ground glass, then get one that fits. Contact vendors on,...
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    Re: Do you get sentimental about your lenses?

    Fair question. Consistently poor image quality regardless of careful focusing, camera support, shutter speed and aperture. Some of my crap lenses are in good condition so I blame the factory for...
  25. Re: Goerz Doppel-Anastigmat Series III No. 1 Question

    David, I just took a look at the pictures in this thread's first post. The flange, not the lens' trim ring, is engraved "Serie III No. 1 F=150 m/m". The flange and trim ring show the same serial #,...
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    Re: Do you get sentimental about your lenses?

    Yes, and I've had several.
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    Re: Do you get sentimental about your lenses?

    Sentimental? About a few, absolutely, but not because of the lenses themselves. Because of the personal relationships behind them.

    After reading the VM carefully, I decided that I wanted a...
  28. Re: Goerz Doppel-Anastigmat Series III No. 1 Question

    Hmm. Dagors and similar lenses are made up of two cells. Each cell is a cemented triplet. The cells are usually identical, i.e., the lens is symmetrical.

    Yes, people do mistaken claim that...
  29. Re: Goerz Doppel-Anastigmat Series III No. 1 Question

    Hmm. It is in what's called a deep mount, used with cameras that have focal plane shutters.

    Which camera did you mount it on? How did you try to focus it?

    I don't have the relevant tables for...
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    Re: Diaphragm placement

    It depends on the lens' design. Some lenses have the diaphragm in front of the glass, for example the meniscus lenses used in low-end Kodak folders. Some have the diaphragm behind the glasses, for...
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    Re: Wollensak Process lenses 20" f/10

    General principles (f/10 process lenses typically cover around 45 degrees) predict that it won't come close to covering 14x17.
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    Re: Help - Double Image/Ghosting on Graflex

    Hmm. Your camera should have first surface mirror. Silvered side faces the rear of the lens and ground glass. It may have been replaced by a second surface mirror, in which case you'll get a...
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    Re: Shutter Help! Xenotar 135mm 3.5

    Hmm. Shutters are made to fairly close tolerances. Compur #1, Copal #1 and Prontor Press #1 all have the same threading and tube lengths. Lens cells made to fit these shutters are also machined to...
  34. Re: graflex speed graphic 4x5 serial number 299799

    Check the serial number again. 299799 is in a block of serial numbers, 299342 - 300841 of 3 1/4 x 4 1/4 Speed Graphics issued 8/26/1941. The next block of 3x4 Speed Graphic s/ns was issued...
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    Re: Repro Claron APO II (320mm)

    It has to be a confection. There IS a 420/9 Repro Claron, it is a dialyte type.

    f/3.5 is very unlikely for a process lens. The ebay listing gives a serial number, 412. This isn't in the...
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    Re: Goerz red dot lens

    It is a process lens, doesn't "go with" anything in particular.

    Go to https://www.pacificrimcamera.com/rl/rlGoerzNYmisc.htm, click on the Red Dot Artar brochure (second for left).
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    Re: Why are we here?

    These days I'm here mainly to be helpful. That's why "the list.'"
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    Re: Hello from southwest Germany

    Martin, where in the southwest are you?
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    Re: Tick Season = Lyme Disease risk

    Don't forget Babesiosis.
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    Re: Mystery Kyvytar 240mm f/6.8 in Copal #1

    Hmm. I don't have the time to plow through this https://www.largeformatphotography.info/forum/showthread.php?10255-The-Computar-lens-and-ULF-coverage just now. Happy searching!
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