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Thread: Paper Negative Under C.F. Lamp

  1. #1

    Paper Negative Under C.F. Lamp

    I needed to condition a new batch of paper developer, and so decided to conduct an experiment and figure out some exposures for using paper negatives at night under compact fluorescent lighting. The scene is nothing special, just a lamp table with a duck figurine, illuminated from a single C.F. bulb. The metered exposure was F/8 at 2 seconds for ISO12 paper. I increased the exposure 2 full stops, to 8 seconds exposure, and am pretty pleased with the tones of this image.

    135mm f/4.5 Fujinon lens in Anniversary Speed Graphic.

    ~Joe


    Duck & Lamp001a by jvcabacus, on Flickr
    "There was just that moment and now there's this moment and in between there is nothing. Photography, in a way, is the negation of chronology."-Geoff Dyer, "The Ongoing Moment"
    My Writing Blog: Joe Van Cleave's Blog
    My Pinhole Blog: Obscure Camera
    Visit my F295 Gallery

  2. #2
    Member
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    Nice! I think i should check all your paper negative test. But i will make that for sure soon..

    How do you normally rate your paper iso? I usually rate mine at 4-6 but it's not consistent it would be nice if i could get the proper rating so i could minimise faults increase good ratio when using paper. I will probably shoot old paper this coming months so rating it smaller would be much better? I have a slight fogged agfa brovira, fogged agfa multicontrast highspeed (this i can't make a decent image in print so it might be unusuable anymore). I'll try to research more about paper negs. I've done this before in manila but i just recently shoot papers again in iran last time when i first made my DIY camera.

  3. #3
    500+ Posts colray's Avatar
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    Joe I wish mine where half as good. well done!!!!

  4. #4
    Thanks for the comments.

    I rate the Arista grade 2 paper at ISO 12, with the proviso that the developer is at 68f temp, or thereabouts. The paper also gets a slight pre-flash, to help bring out the shadow detail. I've been using Ilford PQ liquid concentrate, diluted around 1:10-1:15 or however I feel at the time.

    This image was shot mainly to condition a freshly mixed batch of developer, which can be a bit contrasty until several sheets have been ran through. It was also a good chance to do some calibrations of artificial lighting for still-life's. This test shows that, using compact fluorescent lamps, a +2 stop adjustment from the meter's reading at ISO12 is a good place to start.

    ~Joe
    "There was just that moment and now there's this moment and in between there is nothing. Photography, in a way, is the negation of chronology."-Geoff Dyer, "The Ongoing Moment"
    My Writing Blog: Joe Van Cleave's Blog
    My Pinhole Blog: Obscure Camera
    Visit my F295 Gallery

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