Reciprocity Characteristics of JandC400

Discussion in 'B&W: Film, Paper, Chemistry' started by bmac, Oct 15, 2004.

  1. bmac

    bmac Member

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    The J&C site lists the following Reciprocity Characteristics for JandC 400.

    To 1/2 second - no adjustment
    1 second - 1 stop

    10 seconds - 2.5 stops

    100 seconds - 3 stops

    For those who have used this film, do you believe this is correct? If not, what are your times?

    Thanks,
    Brian
     
  2. Alex Hawley

    Alex Hawley Member

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    So far they've worked for me Brian. I've done a lot more with J&C 200 than 400, but the numbers are similar, though not exactly the same. Between the three forums I watch, APUG, Large Format, and Azo, I have yet to see someone report a problem with reciprocity on either film.
     
  3. David A. Goldfarb

    David A. Goldfarb Moderator Staff Member Moderator

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    That should be about right. Before T-grain films reciprocity was pretty similar for all b&w films.