Adjustments for Long Exposures

Discussion in 'B&W: Film, Paper, Chemistry' started by Erik Hartmann, Feb 17, 2008.

  1. Erik Hartmann

    Erik Hartmann Member

    Messages:
    250
    Joined:
    Sep 25, 2006
    Location:
    Copenhagen
    Shooter:
    Large Format
    I am testing my 'new' 13x18 pinhole camera......Hole 0.4 mm f=100 mm
    Out in a nearby park I shot 6 films (Fomapan 100 iso)..... Sunny Day with lots of shadows .....after developing almost nothing on the film.......
    I think I did not made any adjustments for Long Exposures.......

    and where can I find something about reciprocity factors.......
     
  2. Tom A

    Tom A Member

    Messages:
    147
    Joined:
    Apr 28, 2005
    Location:
    Moen, DK
    Shooter:
    Multi Format
    Hej Erik

    You can find info about Fomapann 100 and reciprocity factors in the datasheets, here...
    Fomapan 100.pdf

    Based on my limited experience with Fomapan 100 and low ligth photography I would say it is a pretty awful film for low ligth photography, or pin-hole in your case. It gave me consistent underexposed negs.

    Good luck with it :smile:

    Tom
     
  3. Pinholemaster

    Pinholemaster Member

    Messages:
    1,504
    Joined:
    Oct 17, 2005
    Location:
    Westminster,
    Shooter:
    8x10 Format
  4. CBG

    CBG Member

    Messages:
    894
    Joined:
    Nov 21, 2004
    Shooter:
    Multi Format
    Pretty much any film can be used under pinhole (or very low light) situations, but some films are less challenging than others. You will have longish exposures with a slowish film that is very prone to reciprocity losses.....

    C