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  1. Re: Using Modern 67mm filters on older lenses - a simple workaround

    I can see only two, both well over 100$ CAD with shipping.
  2. Re: Using Modern 67mm filters on older lenses - a simple workaround

    Been looking for weeks. Is anyone around here willing to hand off theirs?
  3. Replies
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    Re: Jobo Expert 3010

    Does the lid not leak on the Jobo 3010 without a rubber cap like that in the attached picture? I was using the 2509n system in a 2500 tank and I had to pop off the cog head to replace it with a...
  4. Re: How to mount a Goerz Artar 10 3/4 inch in a shutter?

    For the record, according to S.K. Grimes:

    So it seems that it is in imperial after all.
  5. Re: How to mount a Goerz Artar 10 3/4 inch in a shutter?

    Then I suppose that this implies the rear thread is also metric.
  6. Re: 12" Goerz Apo Artar Red Dot filter size?

    The B+W 403, and the Baader U. Although I do think the Baader U might come in a 2" square, I seem to recall seeing that. That's a future purchase, however. Right now I only have the 403's, and they...
  7. Re: 12" Goerz Apo Artar Red Dot filter size?

    Unfortunately, the filters I want to use do not come in formats that will fit such a holder. If it's threaded, it has a pitch and a thread diameter. I can't get the specialty filters I use in broad...
  8. Re: How to mount a Goerz Artar 10 3/4 inch in a shutter?

    You're certain it threads smoothly? Mine is also in the 800,000 range; 808xxx. The front thread is damaged. Now you're making me wonder if the rear thread is also metric. I sent some measurements to...
  9. Re: How to mount a Goerz Artar 10 3/4 inch in a shutter?

    Now that I've looked at it many times over, I am almost certain that it is some now-uncommon (by way of most camera equipment post 60's being metric in dimensions) imperial threading. Another guy...
  10. Re: How to mount a Goerz Artar 10 3/4 inch in a shutter?

    I have exactly the same lens and am attempting to front-mount it to a Copal 3S. I'll include here pictures of the caliper measurement for the rear thread, and the front. 228873228874228874
    Curious...
  11. Re: 12" Goerz Apo Artar Red Dot filter size?

    No, I'd like to purchase an adapter to front-mount it to a Copal 3S I have. I'm hoping it's a metric standard, as S.K. Grimes' adapters are a bit outside of my price range.
  12. Re: 12" Goerz Apo Artar Red Dot filter size?

    I took a look and unfortunately I cannot find anything relating to the front or rear threads.
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    The rear thread appears to be just a bit too narrow to be M46.
  13. Re: 12" Goerz Apo Artar Red Dot filter size?

    Are there marketing or design documents floating around that tell of the dimensions of the front and rear threads? I have a smaller Red Dot Artar and am wondering what adapter I'd need to mount it....
  14. Re: "When did pre-war Zeiss start applying coatings?" and other questions about Tessa

    Incredibly helpful! Thanks Bernice. It seems many of the older Clarons are perfectly suited. I would be happy to use one of those instead of these old Tessars, given that all the examples I can find...
  15. Re: "When did pre-war Zeiss start applying coatings?" and other questions about Tessa

    Very informative Bernice. Thanks to all for the warnings about manufacturers coating old lenses as a service.

    I need for the lens to be uncoated so as to increase the amount of UV light passing...
  16. "When did pre-war Zeiss start applying coatings?" and other questions about Tessars

    I'm looking to get a 24cm Zeiss Jena Tessar for my 4x5 camera, in order to secure a more portrait-appropriate focal length relative to my current 135mm mainstay. I'm pretty broke, so I have to be...
  17. Determining reciprocity failure experimentally?

    I've been thinking about doing this for the x-ray film I'm using. Is there any standard procedure for this? I was thinking of taking a bunch of gradated exposures in a low-light setting. Against what...
  18. Re: Use of X-ray film: technical discussion with example images

    I put four layers of gelatin on her face, in thin coats.
  19. Re: Use of X-ray film: technical discussion with example images

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  20. Re: Use of X-ray film: technical discussion with example images

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  21. Re: Use of X-ray film: technical discussion with example images

    I use the SP445. The marks it leaves at the edges of my negatives are terrible. Tray dev would always leave scratches everywhere. I'd prefer to use something like the Jobo 3010. Currently I don't...
  22. Re: Use of X-ray film: technical discussion with example images

    uv.
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  23. Anyone ever had problems with Epson V700 producing blue streaks, blotches?

    I'm getting something like this, when I do the preview: 208501
    Scans are showing up the same way. I seem to be able to get away with a couple per session without this problem, and then this crops up...
  24. Re: Use of X-ray film: technical discussion with example images

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    Here's some more work. This is all Fujifilm x-ray, 7 1/2 minutes in Rodinal with constant agitation.
  25. Re: Use of X-ray film: technical discussion with example images

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  26. Re: Use of X-ray film: technical discussion with example images

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  27. Issues with faint splotches on negatives when home-developing

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    I develop at home with an SP445 tank and Rodinal. Before hanging the film, I do a final wash and quick soak in distilled water. Throughout development, agitation is even and vigorous....
  28. Re: Use of X-ray film: technical discussion with example images

    Where'd you get it?
  29. Re: Use of X-ray film: technical discussion with example images

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  30. Re: Use of X-ray film: technical discussion with example images

    Okay, so I have my hands on some UM-MA. Has anyone here worked with this film before? I'm going to start testing both dev and exposure, then will report back. To begin, I will develop it as I did...
  31. Re: Use of X-ray film: technical discussion with example images

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    Here are the two spectral sensitivity graphs side-by-side.
  32. Re: Use of X-ray film: technical discussion with example images

    As for the wait at ZZ, I called them and specifically asked about this film. They told me that the wait time posted on their site was inaccurately long.
  33. Re: Use of X-ray film: technical discussion with example images

    I'm happy to say that you're incorrect. It's on the datasheet.

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    I also found a paper where B/RA and UM-MA are directly compared (https://core.ac.uk/download/pdf/12529443.pdf), which...
  34. Re: Use of X-ray film: technical discussion with example images

    If I recall correctly from the datasheet I found, it does. ZZ Medical sells it, only by the case.
  35. Re: Use of X-ray film: technical discussion with example images

    It really does seem to depend. I've looked at the spectral sensitivity charts for Ektascan B/RA and UM-MA (a supposedly green-sensitive mammography film), and both are almost identical across the...
  36. Re: Use of X-ray film: technical discussion with example images

    Is ADM MAMO the same as UM-MA? I'm considering buying some UM-MA.
  37. Re: Use of X-ray film: technical discussion with example images

    I have sad news: Carestream Ektascan B/RA has been discontinued. Does anyone know of any other single-emulsion films available? Or does anyone have any leftover stock they're not using? I'd come to...
  38. Re: Use of X-ray film: technical discussion with example images

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    Here's a shot at 1/8s and f/11 under some lamps. Carestream EB/RA developed for 7m30s in Rodinal.
  39. Re: Film Group-Buy, Central-Eastern Canada (Carestream EB-RA x-ray film)

    It's the same film, Goldman. Whether you order it from Carestream Canada, or ZZ Medical, if you're ordering EB/RA, you're getting EB/RA. I didn't know you could ask for normal post, but assuming that...
  40. Re: Film Group-Buy, Central-Eastern Canada (Carestream EB-RA x-ray film)

    ZZ Medical charges 97$ USD, which comes out to 127.75 CAD, plus the shipping fees. I've ordered from ZZ Medical before, and I know from experience that these fees work out to being 40$+ (About 30$...
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