Results of minimal agitation

Discussion in 'B&W: Film, Paper, Chemistry' started by Donald Miller, Mar 8, 2004.

  1. Donald Miller

    Donald Miller Member

    Dec 21, 2002
    Large Format
    I developed my first negative yesterday using Pyrocat HD and 8X10 Classic 200 film with the minimal agitation as has been discussed on the Azo forum. The results of that are as follows:

    The scene was a SBR 6. For you zone folks that would amount to a N+1 or thereabouts. I mistakenly rated the film at EI 100 (shooting Efke PL 100 in 4X5 too). Unfortunately the negative had damage and I will be unable to post the image until I rephotograph the scene.

    The development time was 53 min in BTZS type tubes using a dilution of 1-1-150 at 70 degrees F. My agitation was 1 1/2 min at outset followed by fifteen seconds at 1/4, 1/2, and 3/4 of total development time. The negative was unbelievably sharp.

    The density as read on the blue channel of my densitometer was as follows:

    Low density .74
    High density 2.41
    Net density range (contrast) 1.67

    This would fit on grade two Azo with a small amount of water bath since my tests on that paper show an ES of 1.60.

    When I rephotograph this scene I will rate the film at 225 and I will bring my development time down to 48 min. This should give me the negative that will print with no water bath and still utilize the potential of grade two Azo paper.
  2. Silverpixels5

    Silverpixels5 Member

    Mar 19, 2003
    Houston, TX
    Multi Format
    Good to hear the technique has worked out for you. I've been folling it in the Azo forum for the past month or so. I had previously tired stand and semi-stand development with 4x5 and under, achieving the same excellent results, but could never do anything larger due to not having the proper equipment. I will be trying to duplicate your BTZS tubes soon, so I'll be able to try this with my 8x10 and 5x7 negs. I look forward to see your results in the gallery.