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Thread: Use of X-ray film: technical discussion with example images

  1. #6201
    Tin Can's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    Not really my job

    Some of us do not like being tricked onto FB, etc

    You image is fine



    Quote Originally Posted by the4x5project View Post
    Next time, please tell me if there is something wrong with my posts.
    Thanks.
    Tin Can

  2. #6202

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

    Quote Originally Posted by Tin Can View Post
    Not really my job

    Exactly. Nobody asked you to act as forumpolice. Even more so, that it was nothing wrong with that link. Dont know where you see a trick. So it was no need either.

  3. #6203

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

    I don't know about other browsers, but if you are in Safari you can go to VIEW| STATUS BAR to turn on the status bar on the bottom of the screen. Then, when you mouse over a link, the URL appears in the status bar, allowing you to avoid domains you find personally offending.
    Bill Poole

    "Speak softly, but carry a big camera."

  4. #6204

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

    Hello,

    I use Agfa CP-GU. I shot some sheets so far in order to find a good EI/developer combo. At the moment I'm around iso 12, developed in HC110 1+63 for about 4.5' at 22C, continues agitation with Cibachrome drum. The density is now quite good but the contrast still too high. Any suggestion to get a softer contrast?

    Thank you
    Pressing the shutter is the only easy thing

  5. #6205

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

    Roberto i tried this Agfa at Iso25 + caffenol C at 22C /agitation every minute for about 8-10min.
    That gave me good density and mid to low contrast.

  6. #6206

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

    Quote Originally Posted by Roberto Nania View Post
    Hello,

    Any suggestion to get a softer contrast?

    Thank you
    If you want to lower the contrast via developing you have the following options:

    Drop the temperature to 20 degrees Celsius (or lower).
    Less agitation.
    Try a higher dilution f.i. 1+79 or 1+100.

    I have no experience with the Agfa film but made good ones with Fuji and Kodak and HC-110 1+63 with this.
    Usually I am working with ISO 25 to 50. If I recall correctly there is quite a drop in contrast between ISO 50 to ISO 25 so ISO 12 should give you quite a soft one.

    Hope this helps.

  7. #6207

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

    Thank you. I found a good way of avoiding scratches by using the cibachrome rotary drum. The point is, agitation is continuous. I'd try to increase the dilution to 1+79 and eventually to lower the temperature to 20C. I'll post some pictures then.
    Pressing the shutter is the only easy thing

  8. #6208

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

    Sure, Roberto. I guess you can achieve a lot via the temperature. I work with 20 C all the time and use your times for ISO 12 too (HC-110 1+63, 20C, 4:30 min).

  9. #6209

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

    What ISO would you rate this X-ray film at - as a starting point? I can’t find my notes from when I was messing with this previously. It is a single sided emulsion - I beloved fit mammography.

    And any advice on development times would be great too!

    Click image for larger version. 

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  10. #6210

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

    Quote Originally Posted by gdi View Post
    What ISO would you rate this X-ray film at - as a starting point? I can’t find my notes from when I was messing with this previously. It is a single sided emulsion - I beloved fit mammography.

    And any advice on development times would be great too!

    Click image for larger version. 

Name:	D26EA0A0-4833-4B3A-9B86-7B0042EE91E9.jpg 
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Size:	76.6 KB 
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    I rate this from 25-100 depending on the light. More red, lower EI. This should also depend on your developer and procedure.

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