Results 1 to 6 of 6

Thread: Negative problem (No that's not a good thing)

  1. #1
    Lascassas, TN
    Join Date
    Jan 2006
    Location
    Lascassas TN
    Posts
    229

    Negative problem (No that's not a good thing)

    I have a question about the attached negative. What happened?

    I have been shooting HP4 developed in MPK for over two years, The other negatives processed in this batch were fine. (Tray process at 70 for 10 minutes) Both negatives from this holder resulted in this over exposure. What I donít understand is why borders are also over exposed. The lens seems to be operating normally.

    Any ideas? How do I prevent it from happening again?

    Thanks
    Last edited by Bill Kumpf; 6-Sep-2009 at 19:09.
    Bill Kumpf

  2. #2
    Octogenarian
    Join Date
    Sep 2003
    Location
    Frisco, Texas
    Posts
    3,529

    Re: Negative problem (No that's not a good thing)

    Since the other negatives developed in this batch came out fine, my first response would be light leaks. However, it is not likely that type of pattern would form from light leaks in the holder. Perhaps the film was briefly exposed to light in the box, or during loading into the holder.

    The negatives in the photos appear to be over developed at the edges.This could be caused by developer surges during agitation. What size developer tray are you using? Are you agitating both vertically and horizontally?

    A slightly larger developer tray, and using Gordon Hutchings recommended agitation pattern for PMK, will probably solve the problem.

  3. #3
    Lascassas, TN
    Join Date
    Jan 2006
    Location
    Lascassas TN
    Posts
    229

    Re: Negative problem (No that's not a good thing)

    I use 8X10 trays with a 30-second shuffle and a 90 degree rotation. I tend to be sloppy in my methods. I will watch my agitation..

    I was worried about light leaks in the holder but the overall pattern confused me. My dark room is dark except for the dials on the Gray Lab timers. Would that fogged HP4?

    The film is stored in a refrigerator until it is loaded into the holders. Some time it may be 3 to 4 weeks before the film is shot and processed.

    This is the second time I have had this result.

    Thanks for leads,
    Bill Kumpf

  4. #4

    Join Date
    Mar 2009
    Location
    Connecticut
    Posts
    21

    Re: Negative problem (No that's not a good thing)

    Bill,
    This looks like someone opened a box of film by accident with some ambient light on and the white cardboard insert was over the top of this particular sheet and it fogged the outside edges. Could this be possible? I am not familiar with this type of sheet film, but have seen this kind of pattern when someone opened an unexposed box of film and the film was not in its foil pack.

  5. #5
    ic-racer's Avatar
    Join Date
    Feb 2007
    Posts
    5,254

    Re: Negative problem (No that's not a good thing)

    The negative on the left was fogged before or after it was put in the holder. The other one (that shows an image) is under exposed. I can tell because I can compare the low zones to the clear film base. I cannot tell anything about the highlight density (ie development) from that scan without some reference density. But it certainly looks printable.

  6. #6
    Lascassas, TN
    Join Date
    Jan 2006
    Location
    Lascassas TN
    Posts
    229

    Re: Negative problem (No that's not a good thing)

    I have pre teen grand kids that play in my study. They are curious. Or it have been me....

    Hopefully that is the only holder loaded with fogged film. I have one more holder from that pack.

    Thanks for the feed back.
    Bill Kumpf

Similar Threads

  1. Negative Scanning
    By andrew vincent in forum Digital Processing
    Replies: 9
    Last Post: 26-Feb-2008, 12:04
  2. Is there good information somewhere about negative comparison?
    By William Francis Ahearn in forum Darkroom: Film, Processing & Printing
    Replies: 1
    Last Post: 20-Jun-2007, 09:46
  3. Help with negative problem
    By Robert Oliver in forum Darkroom: Film, Processing & Printing
    Replies: 13
    Last Post: 25-Jan-2007, 00:22
  4. scratch on otherwise (almost) perfect negative...
    By Percy in forum Darkroom: Film, Processing & Printing
    Replies: 5
    Last Post: 17-Jan-2006, 14:42
  5. Negative Prints
    By Ed Richards in forum On Photography
    Replies: 13
    Last Post: 23-Sep-2005, 05:37

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •