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  1. Replies
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    Re: I don't understand Rodinol...

    Only Ektascan & other single-emulsion x-ray films have anti-halation backing. And they are all on blue polyester substrates.
  2. Re: Is it worth it to use the Speed Graphic handheld from time to time?

    :cool::cool::cool:
  3. Re: Is it worth it to use the Speed Graphic handheld from time to time?

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

    The emulsion is much softer when it is wet, hence easier to scratch. But you can scratch it when it's dry too.
  5. Re: Use of X-ray film: technical discussion with example images

    +1 on this.
  6. Re: Is it worth it to use the Speed Graphic handheld from time to time?

    https://www.zzmedical.com/analog-x-ray-supplies/x-ray-film/fuji-x-ray-film.html

    https://www.zzmedical.com/analog-x-ray-supplies/x-ray-film/carestream-x-ray-film.html

    Ektascan is...
  7. Re: Is it worth it to use the Speed Graphic handheld from time to time?

    :eek:
  8. Re: Is it worth it to use the Speed Graphic handheld from time to time?

    X-ray film works out to about 25 per 4″5″ negative. See...
  9. Replies
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    Re: Collodion - Wet Plate Images

    Lovely image!
  10. Re: Use of X-ray film: technical discussion with example images

    Who is your supplier?
  11. Replies
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    Server error for x-ray thread only.

    When logged in and trying to view the x-ray thread, I get a server error. Either the White Screen of Death (WSoD) or a browser notice (see attachment). I've tried clearing cookies, switching...
  12. Re: Use of X-ray film: technical discussion with example images

    +1 for this cutter. Often listed used on fleaBay for a substantial discount.
  13. Replies
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    Re: Trial with the new B's 4x5 Developing reel

    I've actually ordered parts from Omega Brandess thanks to an earlier post by you, Bob. Good to know they have plenty of parts remaining.
  14. Replies
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    Re: Trial with the new B's 4x5 Developing reel

    That's why I fill and drain mine with the lid off and in the dark (or under red light for x-ray film). The real barrier is it's no longer being manufactured & the remaining stock of spare parts is...
  15. Thread: ROLL CALL

    by seezee
    Replies
    451
    Views
    54,856

    Re: ROLL CALL

    Better than Crossing the Streams.
  16. Re: Use of X-ray film: technical discussion with example images

    Apart from the pollution, I think you are farther north. Beijing = lat. 39.9042 N; OKC metro = 35.4676 N. So I'd probably need a slightly shorter exposure.
  17. Re: Use of X-ray film: technical discussion with example images

    Window light? What time of day?
  18. Re: Use of X-ray film: technical discussion with example images

    Please order one or two of these. Use them with a reflector-type shop light pointed away from your work area (bounce the light off the ceiling). If you use two bulbs together you'll want this adapter.
  19. Replies
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    Re: Collodion - Wet Plate Images

    Beautiful!
  20. Re: Lightweight Tripod for Large Format Recommendations

    Brilliant!
  21. Re: Lightweight Tripod for Large Format Recommendations

    One of the nice things about the Gitzo 1542 (and others in the series) is they have a hook on the bottom of the center column. Carry an empty sandbag, fill it with rocks or dirt, and hang it from the...
  22. Re: Lightweight Tripod for Large Format Recommendations

    I carried my Reis J100 with a Manfrotto 438 leveling base, Manfrotto 410 geared head, & Hejnar Photo extended plate with F63 Arca-type clamp thru the Wichita Mountains for an entire day. About 12 lbs...
  23. Replies
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    601,055

    Re: Collodion - Wet Plate Images

    Fantastic!
  24. Re: Use of X-ray film: technical discussion with example images

    I have to agree that single-sided is sharper. I've used both & it's pretty clear from my results.
  25. Re: Use of X-ray film: technical discussion with example images

    I've used TF-4 and Kodafix. Plan to use TF-5 when I run out of TF-4. Supposedly acid-based fixers (Kodafix) can bleach staining developers, e.g., Pyro, but since you're using Rodinal it won't matter.
  26. Re: Use of X-ray film: technical discussion with example images

    No sweat. It's cheap and it's a great way to learn. The main things is to handle it carefully. Your cutting area needs to be very clean; lay down an old, but laundered, cotton sheet under your...
  27. Re: Use of X-ray film: technical discussion with example images

    The x-ray film I've used has rounded corners. Since I cut each sheet into 4 negatives there's always a rounded corner that acts as the film notch for me. Always place it the same way and Bob's your...
  28. Re: Use of X-ray film: technical discussion with example images

    In a clinical setting, the x-rays pass thru the film and excite pixels on a phosphorescent screen (an "intensifier screen"). The phosphors emit visible light of a wavelength that matches the...
  29. Re: Use of X-ray film: technical discussion with example images

    I'd say that, for a first attempt, you're about where we all start. Bravo & keep it up!
  30. Re: Use of X-ray film: technical discussion with example images

    Same here, depends on total price.

    Never mind, just saw it's UK only.
  31. Replies
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    601,055

    Re: Collodion - Wet Plate Images

    Excellent! Good demonstration of how collodion sees, or rather doesn't see, red.
  32. Re: Use of X-ray film: technical discussion with example images

    That's where covering some cardboard with aluminum / aluminium foil to use as a reflector on the shadow side comes in. ;-b
  33. Re: Use of X-ray film: technical discussion with example images

    Nice. Have you considered putting a reflector or a fill light on the shadow side?
  34. Re: Use of X-ray film: technical discussion with example images

    It's actually the color of the blue polyester base. All x-ray film uses this substrate. It makes it easier for the radiologist to read.
  35. Re: Use of X-ray film: technical discussion with example images

    Wow. Just wow.
  36. Re: Use of X-ray film: technical discussion with example images

    I wish I could remember. I've only used x-ray film (blue or green) in the studio. If I get a chance I'll do some exposure tests with half-speed blue & let you know what I find out.
  37. Re: Use of X-ray film: technical discussion with example images

    I haven't tested it, but as it is sensitive to a much broader range of light frequencies, it stands to reason that it would not lose speed as much in the early hours of morning or later in the...
  38. Re: Use of X-ray film: technical discussion with example images

    I started using Ektascan (1-sided, green sensitive) but switched to half-speed double-sided blue. I got into x-ray film because I wanted something with the spectral sensitivity of collodion w/o the...
  39. Re: endless external HD shuffle RAID 1, 5, or RAID unecessary?

    I hope you're backing up your IronKey to multiple locations. Right now you have a single point of failure if you ever need to retrieve files.

    SSDs (including USB keys) will discharge themselves...
  40. Re: endless external HD shuffle RAID 1, 5, or RAID unecessary?

    Right. It's been a while & my recollection is fuzzy. It might have been the cloud service I was backing up to that limited me. In any case I need TB of storage, not GB and none of the free cloud...
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