Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,970   Posts: 1,523,513   Online: 856
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. #1

    Join Date
    Mar 2005
    Location
    Mexico City
    Shooter
    Multi Format
    Posts
    597
    Images
    122

    HP5+ overexposed by mistake

    I made a mistake choosing my Hasselblad roll back, I picked one with HP5+ loaded thinking that it was PANF+, I shoot it as a 50 asa film, so it's like 4 stops overexposed. Any suggestions how to develop it?. I use D76 1+1 for the HP5. Should I use more dilution?, less time?, both?, try another developer?... of course, I'll try to shoot the hole thing again with the correct exposure, but I don't want to give up with the one I already made. May be is the time for me to confirm if the David Vestal's moto "expose enough and do not develop too much" is true .
    Jose A. Martinez

  2. #2

    Join Date
    Jul 2012
    Shooter
    Multi Format
    Posts
    155
    Thats 3 stops over exposed.. Cut the developing time.

  3. #3
    Thomas Bertilsson's Avatar
    Join Date
    Jan 2003
    Location
    Minnesota
    Shooter
    Multi Format
    Posts
    14,172
    Images
    291
    As long as you don't develop for too long you should be absolutely fine. If it were me I would most likely reduce development about 40% or so.

    If the roll has important shots on it, shoot another roll at 50 and try it first, and adjust as necessary.
    "Often moments come looking for us". - Robert Frank

    "Make good art!" - Neil Gaiman

    "...the heart and mind are the true lens of the camera". - Yousuf Karsh

  4. #4
    c6h6o3's Avatar
    Join Date
    Oct 2002
    Shooter
    Large Format
    Posts
    3,166
    Images
    6
    I rate mine at no more than 200, sometimes 100, so you're not 4 stops overexposed. Do you know anyone who's experienced at development by inspection? You don't want to blow highlights with HP5+. They can block pretty badly.
    Jim

  5. #5

    Join Date
    Nov 2002
    Location
    Melbourne, Australia
    Shooter
    Medium Format
    Posts
    971
    Depending on how much trouble you want to go to, Ilford Perceptol (like Kodak Microdol-X) reduces the speed somewhat. Depending on your metering technique and the subject matter, you might not have overexposed as much as you think. I would reduce the dev time a bit. Maybe 40% less is too much of a reduction. I'm guessing here.

    If it was a highly contrasty scene, you might have exposed just about right.

    I normally rate 400 speed films at 200 and use a generous exposure as well.

  6. #6
    Steve Smith's Avatar
    Join Date
    May 2006
    Location
    Ryde, Isle of Wight
    Shooter
    Medium Format
    Posts
    8,555
    Images
    122
    Quote Originally Posted by Jose A Martinez View Post
    so it's like 4 stops overexposed
    What does like four stops mean?

    Quote Originally Posted by Jim17x View Post
    Thats 3 stops over exposed..
    Oh, I see!


    Steve.

  7. #7
    Mainecoonmaniac's Avatar
    Join Date
    Dec 2009
    Shooter
    Multi Format
    Posts
    2,909
    Images
    6
    How about a snip test first before processing the whole roll?
    "Photography, like surfing, is an infinite process, a constantly evolving exploration of life."
    Aaron Chang

  8. #8

    Join Date
    Apr 2010
    Location
    Jersey Channel Islands
    Shooter
    Medium Format
    Posts
    319
    I'd develop it in rodinal 1/50, you lose around 1 1/2 stops in Rodinal so you might get slightly heavy negs but they should print fine

  9. #9

    Join Date
    Jun 2007
    Shooter
    35mm
    Posts
    866
    Quote Originally Posted by R.Gould View Post
    rodinal 1/50, you lose around 1 1/2 stops in Rodinal
    Is that really exactly what you meant to say ??? There seems to be a very small loss, less than half a stop, but maybe I use a very long time for developing. I only use Rodinal for APX though, so maybe every other film has a secret slow-down.

    For the OP, I'd suggest trying a slow developer (eg. Perceptol) and pull slightly, or use your normal dev and pull quite a bit. Three stops is two stops more than 'doing nothing and getting nice shadows' after all.

  10. #10

    Join Date
    Apr 2010
    Location
    Jersey Channel Islands
    Shooter
    Medium Format
    Posts
    319
    I find that with HP5 in Rodinal, either 1/50 or 1/25 it loses a lot of speed, it is only with Ilford film I have this problem, using Kodak or Foma I lose about 1/3 of a stop, I don't know why, but with Ilford I only get around 320 even in D76, that goes for all Ilford film, Quality is fine but it seems to lose a lot for me, but it is a few years now since I have used any Ilford, prefering Kodak Tri x or Fomapan 400
    Richard

Page 1 of 2 12 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin