Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,993   Posts: 1,524,264   Online: 1023
      
Results 1 to 6 of 6
  1. #1

    Join Date
    Sep 2004
    Location
    Joyce, WA
    Shooter
    Plastic Cameras
    Posts
    994

    Efke and pyrocat

    I was wondering if anyone has some general starting times for pl25 and 100 in the 1:1:100 dilution for enlarging. I use sheet film, in trays. I've done some searches and have seen times anywhere from 8 to 15 minutes. If anyone could narrow this down abit I'd appreciate it.

  2. #2

    Join Date
    Jan 2005
    Shooter
    Medium Format
    Posts
    376

    Efke and pyrocat

    I shoot Efke 100 at 80 and develop in pyrocat hd for 9 1/2 minutes, tray development at 70F. gotta be careful about scratches. This for 5x7 and 8x10.

  3. #3

    Join Date
    Mar 2004
    Location
    Southern California
    Shooter
    Multi Format
    Posts
    3,879
    Images
    11
    I shoot Efke 100 (120 roll, 4x5, 5x7, 8x10) rated at 100 and develop in 1+1+100 Pyrocat-HD, semi-stand agitation for 18 min. at 20 deg. C. I develop the 120 roll film in a SS tank on Hewes reels. I develop the sheet film either in slosher trays or BZT type tubes - depending on how much space (shared) I have available in the lab. I have no problem with scratches.

    For semi-stand agitation I presoak the film for about 5 minutes, drain, gently agitate in the developer for 30 seconds and let stand for 8.5 minutes followed by 5 seconds of gentle agitation then stand for the remaining time. I use a water rinse, then fix with a neutral pH non-hardening ammonium thiosulfate based fixer.
    Tom Hoskinson
    ______________________________

    Everything is analog - even digital :D

  4. #4

    Join Date
    Mar 2004
    Location
    Southern California
    Shooter
    Multi Format
    Posts
    3,879
    Images
    11
    I also use Efke 25, rated at 12. I develop Efke 25 with semi-stand agitation for 12 minutes at 20 deg. C.

    I presoak the film for about 5 minutes, drain, gently agitate in the developer for 30 seconds and let stand for 5.5 minutes followed by 5 seconds of gentle agitation then stand for the remaining time. I use a water rinse, then fix with a neutral pH non-hardening ammonium thiosulfate based fixer.
    Tom Hoskinson
    ______________________________

    Everything is analog - even digital :D

  5. #5

    Join Date
    Sep 2004
    Location
    Joyce, WA
    Shooter
    Plastic Cameras
    Posts
    994
    Thanks for the info. Tom, looking forward to trying the semi-stand. I was wondering if you're seeing contrast control or adjacency effects more with this method (or both maybe)? Thanks again.

  6. #6

    Join Date
    Mar 2004
    Location
    Southern California
    Shooter
    Multi Format
    Posts
    3,879
    Images
    11
    Quote Originally Posted by Colin Graham
    Thanks for the info. Tom, looking forward to trying the semi-stand. I was wondering if you're seeing contrast control or adjacency effects more with this method (or both maybe)? Thanks again.
    You're welcome, Colin.

    I'm seeing both effects.

    I have done 1:1 comparisons between semi-stand and minimum agitation. I define minimum agitation as 5 seconds of very gentle agitation per minute and a 30 percent reduction in developing time (from semi-stand).

    I mostly contact print on Azo and find I prefer the semi-stand results.
    Tom Hoskinson
    ______________________________

    Everything is analog - even digital :D



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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