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  1. Re: Henry William Jackson glass negative from NGM 1989/2 , Is it colorful ?

    Not sure, but I think the mirroring Mark is referring to is silver migration, where the metallic silver migrates to the surface and forms a reflective metallic sheen that may have various colors...
  2. Re: What’s your most “unpopular” opinion about LF?

    I was referring to the optical axis of the lens, not on/off axis tilts of the standards. If you tilt the lens, you tilt the axis.
  3. Re: What’s your most “unpopular” opinion about LF?

    True, but front swing takes the lens off-axis, requiring more lens coverage and swinging the plane of focus off the focal plane.

    Get a little, lose a little...
  4. Re: What’s your most “unpopular” opinion about LF?

    I don't think much of Deardorffs, which some photographers have an almost religious devotion to.

    And most YouTube LF videos are full of bad information from experts who just got their first 4x5....
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    Re: Kodak Eastman View 2D: Serial Numbers?

    And a "must-have" for any collector...
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    Re: Keeping or tossing prints?

    I'd rather have people ask why I burned my prints than ask why I didn't...
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    Re: Keeping or tossing prints?

    There's also the old saying, "the garbage can is the most under-used tool in the darkroom".
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    Re: Keeping or tossing prints?

    There's an old story about Ansel Adams keeping his slightly flawed work prints. Adams was also generous about reviewing visiting photographers' portfolios. If a visitor seemed sufficiently full of...
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    Re: Wet Plate Collodion questions answered here.

    My silver nitrate bath is well over ten years old and has had well over a thousand plates through it. With occasional maintenance and replenishing, I expect many more years out of it.
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    Re: What equipment is hard for you to find?

    Simple plexiglass or 3D printed silver tanks for wet plate would be nice to have at a reasonable price. Most people could make their own wooden boxes to hold them, so just the tanks. Currently, 4x5...
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    Re: Remove paint from lens outside

    Perhaps just repaint the offending area black, then re-enact your font on or through that?
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    Re: Portraits from 2022

    Very nicely done!
  13. Re: Anyone else need idiot proof dark slides?

    Most of us keep at least cursory notes on each exposure, such as lens, f/stop, development time that will be needed...

    I keep mine on little post-it notes stuck to the dark slide, with the...
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    Re: Wet Plate Collodion questions answered here.

    Sounds like it's the collodion, as the other chemicals are known to work. The amount of salts (the bromides and iodides) is pretty forgiving as they're both well past saturated solutions, (you can't...
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    Re: Wet Plate Collodion questions answered here.

    Welcome to the forum!

    Your problems could have any number of sources, the developer, the silver bath (did you season it?), the collodion, light leaks, exposure, some misstep in processing, the...
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    Re: Lens F/Stop Scale Question

    Each diminishing stop decreases the aperture area by half, regardless of focal length. What might change is the degree of magnification of the aperture by the front element/entrance pupil, but this...
  17. Re: Planning Roadtrip for June in Middle/Western USA

    Phoenix in June? You're going to love it... :rolleyes:

    There's a good-sized contingent of large format photographers in Tucson if you'd care to visit. Around a dozen of us gather for coffee...
  18. Re: Is it .27 or .30 when figuring out a focal length - Which one do you use?

    A six-inch lens on a 4x5 is equivalent to a 150mm lens on a 4x5.

    Best not to think in terms of equivalents and just let large format be its own thing. Asking "what lens would I use on a 35mm?"...
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    Re: Ansel Adams Portrait Session

    Fascinating history; so that's part of how the University of Arizona's Center for Creative Photography had a chance to get its foot in Adams' door...

    Thanks, Merg!
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    Re: Ansel Adams Portrait Session

    I wish I could afford an assistant to blame things on... :rolleyes:
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    Re: Ansel Adams Portrait Session

    Actually, that's Edwin McMillan, who did win the Nobel prize in 1951.

    https://www.nobelprize.org/prizes/chemistry/1951/mcmillan/biographical/
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    Re: Verito 14.5 inch

    Oh, it's easy to find! It's all over the place!

    (Actually, the achromatic doublet at the rear corrects the Verito fairly well, though not perfectly. Most of the Verito's soft effect comes from...
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    Re: Ansel Adams Portrait Session

    I searched but couldn't find it, though there were a number of images of Adams making the portrait. Just none of the actual portrait.

    Perhaps he forgot to pull the dark slide...
  24. Re: Close-Up lenses for LF photography, advice needed

    I suppose you could use the Imagon as a close-up diopter, just as you could use any positive single-celled lens (front of a Petzval, rear of a Tessar or Verito, half a Rapid Rectilinear...) as a...
  25. Re: Close-Up lenses for LF photography, advice needed

    Actually, 1/4 of the sum.

    For 8x10 and 11x14, I'd suggest a +3 diopter (333mm) and a +2 diopter (500mm). Whole sets including those and a +1 (1000mm) and +10 (100mm) are cheap. If you want to...
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    Re: Dots on my lenses...

    Cross-referencing to this thread taht has some good information:

    https://www.largeformatphotography.info/forum/showthread.php?166671-References-on-the-meanings-of-colored-lens-dots
  27. Re: Can you tell me anything about this lens please?

    Looks like a generic English Rapid Rectilinear. Should be a decent lens, if a little slow at f/8. Very likely original to the camera.
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    Re: Velostigmat for 8x10

    I don't know why, but for a string of focal lengths Wollensak made the Series II in half-inch increments, 14", 14.5", 15", 15.5", and 16". There's also a 19" and a 19.5".
  29. Re: Wollensak Velostigmat Series II lens question

    If you really want the soft focus feature, you can remove the front engraved ring and put a spacer behind the front element to move it out farther, then reassemble. Moving the front element out is...
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    Re: question for you wet platers

    I've been following Watkins for decades, and have a special interest in historic lenses, so I've accumulated some notes through the years. Watkins also used a Grubb C Aplanat, (a single doublet),...
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    Re: question for you wet platers

    Keep in mind Watkins used Rapid Rectilinears (maximum aperture f/8) for his smaller plates. He only had one lens for his mammoth camera, a 16-inch Globe lens, which was only sharp between f/36 and...
  32. Re: Using a Neutral Density Filter on a Rear Lens Element

    If you got a UV filter from the same manufacturer as your ND filter, I'd assume they would have the same base glass, ergo the same focus shift. (You might want to ask the manufacturer about this.)...
  33. Re: Determining coverage/image circle of simple lenses

    Terminology-wise, a single element or doublets have a very large circle of illumination, meaning they light up a large area. But they have small circle of coverage, where the image would be...
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    Re: NOBA Cameras

    With apologies for posting the listing, here's a NOBA I'd never seen before...

    https://www.ebay.com/itm/133766545649?hash=item1f251b80f1:g:zekAAOSwCitgpp9j
  35. Re: Custom Wet plate holder and Lens Board needed

    You might be able to trim down an old wooden 8x10 back to fit the existing back the same way your 10x12 plate holders do. Then you could use standard 8x10 film holders which are easily converted for...
  36. Re: The Problem with Modern Lenses.. transfered to those new to view camera image mak

    Splitting hairs, like hammers don't drive nails, people drive nails. Computers have been used heavily by those designing and redesigning optics for a long time.

    Bernice's original question was...
  37. Re: The Problem with Modern Lenses.. transfered to those new to view camera image mak

    The performance difference between a 1980's "vintage" computer-designed multi-coated lens and a 2021 "modern" computer-designed multi-coated lens is less than negligible.

    Most photographers using...
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    Re: Large Format Landscapes

    The image must be hosted on another site, like Flickr, and a link posted here which automatically posts the image from that site.
  39. Re: Monalog photography group looking for new members

    Maybe their "Vision of America" is "Diversity Through Exclusion"?
  40. Re: 8x10" at which length, is an auxiliary bellows support necessary?

    I'd say bellows support is necessary when the bellows starts to vignette the image frame, or more rarely, if the wind starts moving it about. Like Bob said, just tuck something under the bellows to...
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