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  1. Re: Dilution problem of sodium sulphite in water

    During the years when mixing B&W chemistry from powder, a good solution to this problem was to use a magnetic stirring plate with a magnetic stirring bar in a mixing beaker or Kodak glass graduate....
  2. Re: Is there such as thing as a modern, fast, compact 360 for 8x10?

    Define "lightweight", Define "Fast", Define "Compact.

    Each of these requirements will impose specific trade offs that are a fixed given.

    As for "sharp" realities of 8x10 often imposed...
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    Re: Going Wide on 5x7

    Previously discussed:

    https://www.largeformatphotography.info/forum/showthread.php?143843-Good-choice-for-a-5x7-wide-angle&highlight=150mm+super+symmar


    Bernice
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    Re: 210mm F5.6 Lens For 8x10

    200_ism mm lens for 8x10 has come up often. Do a search on LFF to see the numerous previous discussions.

    Essentially, it comes down to cost -vs- lens size -vs- what your specific print image needs...
  5. Re: Disastrous Consequences (solved: fog with Intrepid lensboard)

    If Sinar lens boards fits this Intrepid camera, simply use them and move on.

    Batting about saving a few $ here or there is absurd given the overall cost and resources required to produce images...
  6. Re: Disastrous Consequences (solved: fog with Intrepid lensboard)

    Cost to water jet cut FR4 or aluminum is about the same. Since the FR4 is coated, finishing cost would be very similar. Very possible raw material cost would be more for the FR4 as non-copper plated...
  7. Re: Disastrous Consequences (solved: fog with Intrepid lensboard)

    Make a correct lens board out of wood or aluminum. Cost reduction on an absolutely crucial part (lens board) is absurd.

    One sheet of 4x5 color transparency film about $5-7 USD, add processing per...
  8. Re: Disastrous Consequences (solved: fog with Intrepid lensboard)

    Not impressed. Very possible reason for using FR4 which is a printed circuit board material very common in the electronics industry is cost. FR4 is low cost and easy to have made in the shape needed...
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    Re: Carl Zeiss Jena Tessar 150mm f4.5

    Completely depends on your print image goals. Previously discussed.
    https://www.largeformatphotography.info/forum/showthread.php?159497-Teach-me-about-Lens-Design

    What might be the only choice...
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    Re: Mat Size vs. Mount Size

    8x10_ish prints go on 11x14 mat boards.

    10x14_ish prints go on 16x20 mat boards.

    Smallish gap between over mat, about 1/4" to no more than 1/2" max.

    They are dry mounted off center with a...
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    Re: 8x10 Wide Angle Lenses for Still Life

    Image circle grows as the image circle moves towards 1 to 1 or life size. Essentially most any 210mm lens will cover 8x10 once the image on the ground glass-film is about equal to the object being...
  12. Re: Fujinion W f5.6 210mm fuzzy at wide open

    Odd of Fujinon shipping a defective lens when new, vanishingly small. Stuff that had happened to this lens between it's original owner-user to it's most recent owner_most anything is possible.

    Or...
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    Re: Smoke smoke everywhere

    207660


    Bernice
  14. Re: 150mm f8 SW Nikkor is retrofocus

    "150mm f8 SW Nikkor is retrofocus"

    ~NO~


    Bernice
  15. Re: Fujinion W f5.6 210mm fuzzy at wide open

    Sounding like this Fujinon lens is a dud. Time to move it on.
    As for shims, they are set and selected during production of a specific lens with the shim thickness specific to each lens.

    Example...
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    Re: Smoke smoke everywhere

    Coastside Northern California today
    207613


    NASA sat view.
    207614


    Bernice
  17. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    The cinema and video folks have been using ball leveling heads with no riser column (not possible with some of the really BIG cameras) for decades.
    Been using a modified Bolex leveling head no...
  18. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    Drew, Just do not understand the rational with wanting the lowest weight set up then wanting a geared tripod head with a riser column.

    IMO, the riser column is not needed, adds weight and...
  19. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    Weight can be lowered by loosing the geared tripod head and a tripod with a riser column. If done properly, better stability can be had with lower weight and not much difference in set up ability.
    ...
  20. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    Yes Drew, very different tool for a very different image making goal. There is far more to making images than just a view camera..

    Done,
    Bernice
  21. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    Much relative Drew...
    207459

    Canon 300mm f2.8L on Canon mirrorless digital.. Could this be done on a view camera?



    Bernice
  22. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    Fujinon 450C f12.5 is coveted for it's small physical size (copal or similar# 1 shutter) and large image circle. IMO, kinda a mixed bag as it's small physical size makes it desirable for folks who...
  23. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    Goes direct back to making print image goals first, lens choices second, camera third at best..

    For much of digital and smaller film format making, camera choice essentially dictated what lenses...
  24. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    Back in the 4x5 field folder days (Technika, Toyo and etc) shortest focal length lens that appears reasonable was 90mm of any brand-favor. Even with a 90mm, it was not the easiest focal length to...
  25. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    Chamonix.. it's a lightweight field folder camera. Rack it out 400mm to 500mm and it's stability will be quite questionable.

    The most difficult and challenging aspect of using any longer than...
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    Re: Horseman 10x8 Help

    To make this 8x10 Horseman functional, need to find the correct 8x10 front standard or make up the parts required to convert the 4x5 front standard to 8x10 front standard. Horseman made variations on...
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    Re: Shot abandonment

    Shot abandonment, numerous times.

    Most often happens outdoors. From changes in lighting to not ok with the GG image and a long list of reasons.

    IMO, part of what causes Shot abandonment is...
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    Re: Horseman 10x8 Help

    Mixed lash-up of Horseman L parts.

    The rear appears to be a 8x10, the front is a 4x5 L. These parts are mostly interchangeable like Sinar, but with more exceptions if they are interchanged than...
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    Re: Teach me about Lens Design

    Excellent result :)


    Bernice
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    Re: Smoke smoke everywhere

    Today's mid morning sun from Coastside.
    207064


    Bernice
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    Re: strange Componon 240 lens

    That is a lens barrel from a f4.5 Schneider Xenar without the front element cell and maybe the rear element cell. Not a functional lens as illustrated.
    It is possible to use a f4.5 xenar as an...
  32. Re: Which of my 5 LF lenses are worth keeping or worth upgrading?

    Until you have tested and used each of these lenses lots, how can any determination of what they are or might be?
    Said this many times before, brand and lens type alone does not automatically imply...
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    Re: DOF and diffraction

    Fight this reality and way of Nature or work with it, there are no other options.

    It is much about trade-offs, not all images made are best with everything in focus, not all images made are best...
  34. Re: Any recommendation on an 8x10 lens for tabletop and sculpture

    If the belief moving "up" to 8x10 will improve table top image quality over 4x5... that is likely no.

    What it will do is cause a whole lotta grief and difficulty that once never happened. Trying...
  35. Re: Any recommendation on an 8x10 lens for tabletop and sculpture

    Lens, secondary, difficulty will be lighting and keeping that sculpture focused in areas that are important. Other factor becomes bellows, is there enough on the camera to be used to achieve the...
  36. Re: Investigating the image orientation bug: feedback, please!

    Image file produced with Canon digital. Uploaded with Apple note book.
    The problem some times does not occur if a single continuous words is used in the title. It a space or number or similar is...
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    Re: Sinar Norma Copy Stand

    This was the era when studio strobe power was absolutely required. Once the products got large, so did the strobe power needed to light them. If diffusion was applied, even more strobe power was...
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    Re: Teach me about Lens Design

    Do step drill bits go that large, think it was 57mm? Ideal way is to set up the board in a lathe and bore the hole to the size needed. Making a hole in plastic can be as difficult as aluminum.

    ...
  39. Re: Color correction filters for transparency film?

    Home processing, not even close. The New Lab had a full time Chemist to assure the E6 chemistry was consistent and reliable day after day, week after week, month after month. They used a Refema...
  40. Re: Color correction filters for transparency film?

    Go to post# 20 on this link:
    https://www.largeformatphotography.info/forum/showthread.php?155445-Easy-Testing-Used-LF-Lenses/page2&highlight=elinchrome

    IMO, trying to achieve this degree of color...
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