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  1. #11
    Jim Jones's Avatar
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    For long focal lengths, almost any thin metal works well. I prefer the ends of tin cans. They are strong, easy to drill, and the thickness doesn't really matter when the diameter of the hole is many times the thickness. For wide angle pinholes, thinner brass shim stock might be better. Accurate and clean holes can be drilled by tightly sandwiching thin brass between fairly hard material like tempered hardboard. For such large pinholes, this technique is faster and more accurate than the usual dimple and sand method.

  2. #12
    TheToadMen's Avatar
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  3. #13
    AgX
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    Quote Originally Posted by AgX View Post
    And here the trashcam project at it's "own" site, the one of the City of Hamburg Litter Sevice, next to the trash collection agenda..:

    http://www.stadtreinigung-hh.de/srhh...nografie1.html
    a short video:

    http://www.youtube.com/watch?v=i7jBPD_UGZ8

  4. #14

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    Here is a link to a calculator for the diameter of the hole in a pinhole camera.
    http://www.mrpinhole.com/calcpinh.php

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