New Holga 120 Pinhole

Discussion in 'Pinhole Photography' started by Lowenburg, Dec 25, 2008.

  1. Lowenburg

    Lowenburg Member

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    Has anyone been working with the new Holga120 PC pinhole camera? I just bought one from B&H, and they have both the square shooter and the wide angle; I went for the square.

    I'm going to be using 400 ISO film to start out, and was wondering if anyone has exposure time recommendations. The aperture is F/192. I'm not a technical type photographer so my natural inclination would be to just try random exposure times until I got decent results. But with the price of film and processing being what it is I thought it might be wise to ask the advice of more experienced pinhole photographers.

    I'll be using it in both brightly-lit outdoor situations as well as bad weather, rainy days, etc. So if anyone has suggestions I'd be happy to try them out.
    Thanks to all, I always receive helpful information on this site!

    Bill Lowenburg
    P.S. here's a couple of links to my book and blogs

    http://crashburnlove-photocommentary.blogspot.com/
    (The first picture in the Photocommentary blog was taken with a Holga by the way.)

    http://crashburnlove.com

    http://crashburnlove.blogspot.com/
     
  2. winger

    winger Subscriber

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  3. Nitai108

    Nitai108 Member

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    You can get a table with the exposures equivalent for your f-stop and reciprocity failure for different films with this software http://www.pinhole.cz/en/pinholedesigner/

    For example, for FP5

    "Pinhole camera exposure times
    f number: 192
    Exposure factor for f number 22: 76,2 x
    Including reciprocity failure for film: Ilford HP5 Plus 400

    Time for f 22 Resulting time
    1/1000 1/15
    1/500 1/8
    1/250 1/4
    1/125 1/2
    1/60 3 s
    1/30 6 s
    1/15 13 s
    1/8 29 s
    1/4 1 m
    1/2 4 m
    1 s 13 m
    2 s 46 m
    4 s 3 h
    8 s 11 h
    15 s 38 h
    30 s 153 h
    1 m 608 h
    2 m 2427 h

    Created by PinholeDesigner 2.0, film database v1 (9. 6. 2003)
    Copyright © David Balihar, 2001-2003 "
     
  4. Galah

    Galah Member

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  5. arealitystudios

    arealitystudios Member

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    I've been using the wide angle Holga pinhole for a few months now. Absolutely love it.

    For exposure I've been following a very simple formula that has worked really well. Measure for f/5.6 and multiply the shutter speed by 1,000.

    So for example: yesterday on a bright day my meter measure f/5.6 @ 1/400th of a second (I was using ISO 100 film). So one divided by 400 = .0025 and then times 1,000 you get 2.5 seconds.

    My cell phone has a calculator on it so doing this quick little formula when out and about is really easy.

    It may not be a perfect formula, but I always get in the pallpark when I use this and for pinhole it's good enough.