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  1. Replies
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    Re: What is this lens ?

    Check the actual focal length to see if it's a telephoto or not. As Ridax suggested, a telephoto lens will cover much less, and most of the longer aerial lenses were telephotos.
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    Re: contact printing ??

    The negative goes on top of the paper?
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    Re: Dissassembly of an Antique Brass Lens

    Keep us informed, and good luck...
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    Re: Rodenstock Imagon

    Thank you! Yeah, the black eye is a bit worrisome, but that's what happens when little girls put on make-up! On the original print, you can see a little Kuhn-bug where the ring sparkles. I hate...
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    Re: Dissassembly of an Antique Brass Lens

    Regarding any "clamp-it-and-force-it" methods, the only way I'd try that is with adjustable rubberr-strap oil filter wrenches that wrap around the whole body of the lens.

    With a flange, you might...
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    Re: Rodenstock Imagon

    For comparison, here's one from my 300mm Imagon wide open, no disk.

    https://live.staticflickr.com/65535/51159589017_da6b8f9751.jpg
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    Re: Rodenstock Imagon

    This is as soft as my 360mm Imagon gets with the h/5.8 disk (holes open).

    https://live.staticflickr.com/65535/52341341776_93e5241c2f_c.jpg
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    Re: Dissassembly of an Antique Brass Lens

    That's what I use. It's still a petroleum-based penetrating oil, but with some "enhancements" like naphtha, so use it outside.
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    Re: Rodenstock Imagon

    Or get some properly-sized lens caps and drill out your own to the effect you desire. I always found the f/5.8 disk with the holes open is still too sharp for Pictorial work.
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    Re: Dissassembly of an Antique Brass Lens

    I'd run some penetrating oil into the threads and let it sit a few hours.
  11. Re: Photography is a Top Driver in Silver Demand, Showing Film’s Resurgence

    Silver nitrate is still cheap, under $1/gram when buying 1/2 pound or more.
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    Re: Do you get sentimental about your lenses?

    Sometimes I put them on the camera and take advantage of them... Does that count?
  13. Re: Aperture question - Scheimpflug - Portraits / Portraiture

    The Scheimpflug Principle presumes a two-dimensional subject. In the three-dimensional world, with things projecting off the flat plane of sharp focus, those watching the Photographer's frustration...
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    Re: a tin type processing question

    Without seeing it, I'd guess it wasn't varnished. That can happen at events where there's a hurry to get the tintypes to the customers. Sorry, no fix I know of.
  15. Re: "Cooke Lens Compendium" is finally published

    The Compendium just starts with "The first Cooke lens was made from an elegantly simple design, patented in 1893, known as 'The Cooke Triplet Patent'.” It's worth noting that Taylor, Taylor & Hobson...
  16. Re: Silvery Shine Schneider Center Filter III

    I suspect an unusual AR coating, but yes, Bob S. might now better.
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    Re: Portraits from 2022

    Edison, what a wonderful image.
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    Re: Help to ID this lens.

    Could also be a plasmat with one positive element missing. You'd have to disassemble it to see. The shutter alone is probably worth more than the shutter with the lens.
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    Re: Help to ID this lens.

    First, measure the focal length and aperture to see if it's really an f/5.6 wide open. Could be a Frankenstein lens as you suggested, or damaged, or in the wrong shutter upsetting the spacing.
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    Re: Zone IV antique enlarger head

    I'm wondering whether the variable contrast filtration system will behave differently with light sources of different color temperatures?
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    Re: Apertures for Zeiss Triple Convertible

    Remember that the aperture size will change when you change front elements.
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    Re: Kodak chemicals -- now what??

    Sealed powdered sodium thiosulfate fixer has at least a decades-long shelf life. I was using canned Korean War era military surplus powdered fixer up until I ran out last year.

    Just wondering,...
  23. Re: How to imitate the contrast of wet plate

    I have a suggestion. Do wet plates.
  24. Re: is there work arounds for missing retaining rings?

    If enough of the lens protrudes behind the lensboard, a ring clamp and soft rubber gasket will hold it securely and without damage.
  25. Re: is there work arounds for missing retaining rings?

    Re: is there work arounds for missing retaining rings?

    Yes. Instead of a missing retaining ring, many of us have missing flanges.
  26. Re: Refinished LF Wood Camera 'coating' Melting

    Not adequately shaking the spray paint can could severely impact the durability of the finish too.
  27. Re: Which lenses did Carleton Watkins use in 1861 for his mammoth plate camera

    Post 13 in this thread shows Watkins' mammoth camera in Yosemite, with what is unmistakably a Globe lens. Photo from:

    http://www.undiscovered-yosemite.com/yosemite-photographers.html

    If you...
  28. Re: Which lenses did Carleton Watkins use in 1861 for his mammoth plate camera

    The Grubb C lens was a 15-inch focal length meant for 8x10 to 10x12. It would not have covered anywhere near the 18x22-inch mammoth plates. Watkins generally travelled with multiple formats. The...
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    Re: Lens coating test

    Anti-reflective coatings are primarily to reduce flare, so photograph in a situation where flare is a major issue, such as into the sun. Problem is, as ridax said, without a similar image from a...
  30. Re: "If I wanted to be safe, I would have done Landscapes."

    In all the stills and videos I've seen of Mann working, I've never seen a Toyo camera...
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    Re: Soft focus lens suggestions requested

    The Imagon and its "strainers" were developed in the 1920s by Pictorialist photographer Heinrich Kuhn, and put on the market in 1930 by Rodenstock, so it pretty much fits in with the Pictorialist...
  32. Re: What will happen to your negatives in "the end"?

    Potassium dichromate was the go-to staining agent for wood for centuries. I'd bet a lot of our older cameras were stained with it.

    Actually, it's not a stain, it's an oxidizer that darkens the...
  33. Re: What will happen to your negatives in "the end"?

    I did uranium prints for several years in the late 1970s, and I'm still alive and kicking! (Still hoping I develop those latent super-powers someday...)

    Some modern Japanese field cameras are...
  34. Re: What will happen to your negatives in "the end"?

    It's all just leading to a "cave paintings are dead, everyone's doing frescoes" argument.



    Have you also considered potassium dichromate as a wood stain?
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    Re: Portraits from 2022

    What a wonderful portrait of the two of you, Alessandro!
  36. Re: What will happen to your negatives in "the end"?

    Maybe we need a new thread, What will happen to your exif data in "the end"?
  37. Re: What will happen to your negatives in "the end"?

    At least your family won't have to worry about any Brandy being left behind... :rolleyes:
  38. Re: What will happen to your negatives in "the end"?

    All this is a simple reminder that perhaps the greatest advancement in digital photography is the "delete all" button.
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    Re: Soft focus lens suggestions requested

    The Imagon and Verito are both fine choices. Like Peter, I prefer using the conventional aperture in the shutter over the h/stop disks. The Velostigmat Series II without the diffusion is not soft...
  40. Re: What will happen to your negatives in "the end"?

    We're well into the digital age, and even a prolific photographer with a long career can put his/her images, writings, etc. on a small thumb drive and donate copies to multiple institutions, which...
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