Panatomic-X

Discussion in 'Exposure Discussion' started by John Galt, May 6, 2018.

  1. John Galt

    John Galt Subscriber

    Messages:
    134
    Joined:
    Mar 8, 2017
    Location:
    Rivendell
    Shooter:
    Medium Format
    Hello everyone. I recently scored 4 roll of Tech Pan and 4 rolls of Panatomic-X, always frozen from a member here.

    Found plenty of data for the Tech Pan but coming up short on the Panatomic X . . What are your recommendations for exposing and developing?
     
  2. BAC1967

    BAC1967 Subscriber

    Messages:
    500
    Joined:
    Oct 30, 2014
    Shooter:
    Medium Format
    I recently found a bulk loader at an estate sale that still has a partial roll of Panatomic-X. I have no idea when this film expired so I did a test strip where I metered several identical shots from 32 down to 12 ISO. I decided to meter mine at 25 ISO based on the test. I don’t know how it was stored over the years but slow film ages much better than fast film. Panatomic-X was discontinued in 1987 so it’s over 30 years old.

    The shot below was metered at ISO 25 and developed in Rodinal 1:50 for 13 minutes. The camera was a Mercury II so I’m not 100% sure the shutter speeds are spot on but they seem pretty good.

    [​IMG]Tug Boat & Fishing Boat Diptych by Bryan Chernick, on Flickr
     
  3. jnanian

    jnanian Advertiser Advertiser

    Messages:
    24,828
    Joined:
    Jun 21, 2003
    Location:
    paswonquitte
    Shooter:
    Multi Format
    it went out of production when tmx came out
    i'd rate it at Iso 4
    good luck with the tech pan, i only used it
    high speed and with dektol for high contrast
    i'd probably drop it by the same amount ..
    1/2 the iso for each decade
    YMMV
     
  4. Sirius Glass

    Sirius Glass Subscriber

    Messages:
    27,515
    Joined:
    Jan 18, 2007
    Location:
    Southern California
    Shooter:
    Multi Format
    Groups:
    If it was properly stored it should be exposed at ISO 32, box speed. It is a very fine grain film.
     
  5. mshchem

    mshchem Subscriber

    Messages:
    2,114
    Joined:
    Nov 26, 2007
    Location:
    Iowa City, Iowa USA
    Shooter:
    Medium Format
    Rate it at box 32 ASA develop in HC110 OR D76. I have technical pan in my freezer, I still see packets of technidol on Ebay
     
  6. Jim Jones

    Jim Jones Subscriber

    Messages:
    3,006
    Joined:
    Jan 16, 2006
    Location:
    Chillicothe MO
    Shooter:
    Multi Format
    The simple rotary focal plane shutter in the Mercury II was more accurate than the more complicated shutters in Leicas and Contaxes of the 1940s and 1950s. I've seen them sluggish and in need of cleaning or lubricating, but usually they work well.
     
  7. Bill Burk

    Bill Burk Subscriber

    Messages:
    6,064
    Joined:
    Feb 9, 2010
    Shooter:
    4x5 Format
    I have plenty of success with Panatomic-X in D-76 1:1 for times between 7 and 10 minutes at 68-degrees F.

    You will find the developed, fixed and washed film appears grayish. For example I get 0.27 Base+Fog, but much of this is anti-halation gray film base.

    In all cases I find Panatomic-X rates fully at 32, despite being long-expired.

    I would recommend development time of 9 to 10 minutes. My 7 and 9 minute tests fall a little low of my aim contrast of 0.62, so 9 is ok and 10 will get closer to 0.62
     
  8. Bill Burk

    Bill Burk Subscriber

    Messages:
    6,064
    Joined:
    Feb 9, 2010
    Shooter:
    4x5 Format
    BAC1967’s choice to shoot at 25 is wise. When I rate film, I find its ASA speed. From that actual rating, I often depart and set EI at 2/3 stop lower, so 20 or 25 might be a good exposure rating. Just keep in the back of your mind - shooting at lower speed is not required due to age, the film will have its full speed.
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies. If you have a Photrio account, please log in (and select 'stay logged in') to prevent recurrence of this notice.