One film, two iso ratings.

Discussion in 'B&W: Film, Paper, Chemistry' started by Mike Kennedy, Jul 26, 2005.

  1. Mike Kennedy

    Mike Kennedy Member

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    I just found out that the Tri-X 400 film that I had pulled from one camera and finished in another had been misscalibrated. The first rating was iso 400 in a Yashica T4 while frames 15-30 were shot in a Nikon FE and rated at iso 200.
    How does this sound: Rodinal 1+24 for 15mins at 20c.

    Thanks,
    Mike
     
  2. modafoto

    modafoto Subscriber

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    That sounds way too much.

    I do the film 1+50 for 13 minutes when shooting @ 400. For 1+24 (or 1+25) I would go for 7 min @ 400 or 4½ min @ 200. Try giving it 5½ and it will be almost in between. Then you will get slighty overdeveloped negs for the shots done @ 200 and slighty underdeveloped negs for the shots @ 400. Both will be printable without much loss.

    Or try it for 10 min. in 1+50.
     
  3. Ole

    Ole Moderator Staff Member Moderator

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    That's only one stop difference. I would develop the whole thing to 400 - it's easier to control high density than thin negs with no shadow detail.
     
  4. modafoto

    modafoto Subscriber

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    Sounds reasonable. I can join this opinion, too.