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daisuke nakabayashi

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Posts posted by daisuke nakabayashi

  1. Hi folks,

     

    <br><br>As for a hand held compact 4X5 camera, I've made a pinhole

    camera out of an old Graflex cut film magazine (predecessor to the Grafmatic).

    Focal length is 40mm, f/256, the camera is really no bigger than a stack of film

    holders. Some pictures of the camera and results <a href="http://justdai.com/

    Images/temp/phcamera.html"> here.</a>

     

    <br><br>Although the interior test shots were made with a tripod (testing out

    angle of view, exposure, etc.), most of my shots with this camera have been

    hand held. I load it with HP5 metered at 3200 - exposure is about 1/2 to 3

    seconds in bright sunlight. Since it is a very wide angle pinhole camera, you

    don't need a range/view finder... it's more like a point and shoot than anything

    else.

     

    <br><br>Dai.

  2. Hi Al,

    <br><br>

    I used a large format lens shutter for the aperture for a camera obscura

    installation that made a few years ago. Since I did not know before hand how

    the weather will be (it was in San Francisco), I decided to use the iris/aperture

    of a shutter to adjust the opening. This worked well since it also

    demonstrated how the size of the opening affected the sharpness of the

    image in relation to the amount of light it let in. I used a Compur #1 lens

    shutter (same size as Copal #1) with the lenses removed. <br><br>

     

    Here some images I took inside the installation: <a href="http://justdai.com/

    wppd04/index.html">http://justdai.com/wppd04/index.html</a>

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