What is the process for developing IR film?

Discussion in 'Digital Photography' started by seenew, Feb 24, 2007.

  1. seenew macrumors 68000

    seenew

    Joined:
    Dec 1, 2005
    Location:
    Brooklyn
    #1
    I know you need an IR filter for digital IR photos, but for film, is IR film JUST sensitive to IR light? Or will I need a filter? Also, are the chemicals used in developing the same as for regular black and white?

    Just wondering, 'cause I saw some IR film on B&H, and thought about it.
     
  2. snap58 macrumors 6502

    snap58

    Joined:
    Jan 29, 2006
    Location:
    somewhere in kansas
    #2
    You need a filter, a #25 red works fine. I have always used regular T-max developer with good results. Kodak use to have some time information on their site, but seems like I was at 75 degrees, 6.5 minutes with 30 second intervals.
     
  3. bartelby macrumors Core

    Joined:
    Jun 16, 2004
    #3
    Remember IR focuses slightly off visible light. There should be a red dot on the lens which is the focus point.
     
  4. seenew thread starter macrumors 68000

    seenew

    Joined:
    Dec 1, 2005
    Location:
    Brooklyn
    #4
    thanks for the help!

    oh, wait. 6.5 minutes for what kind of IR film? OR does it not change, cause I know you develop ASA100 and ASA400, etc, for longer and longer amounts of time. Is IR film all the same grain?
     

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