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  1. #21
    cmacd123's Avatar
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    Quote Originally Posted by tiberiustibz View Post
    BTW modern cameras count sprocket holes with an infrared sensor so the frames always line up. No rulers required!
    Some Canon models do this- what others cameras use the same trick?

    (makes high speed infrared a bit of a pain mind you)

  2. #22
    trexx's Avatar
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    Pentax has some models with IR frame sensors. As you do not thread a takeup spool, only align the end of film next to it. This makes the frames always register the same. I like this because every from number is always at the middle of the frame. I have a negative carrier with a cutout fro frame number. When printing full frame on 8x10 the number appears above the image.
    D-76 is a standard developer, although not one I use.
    Ansel Adams - The Negative

  3. #23
    David William White's Avatar
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    Quote Originally Posted by DarkroomExperimente View Post
    since IR sensors are likely to fog IR film....what pro cameras use IR sensors?
    A soldering iron right in the 'eye' will 'fix' an IR sensor.

  4. #24
    trexx's Avatar
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    I have use XIE and Efke ir820 in my Pentax with no ill effects on the image frame, and almost no fog in the margin. Disabling the sensor/emitter would likely cause the film to be wound to the end as could not find the sprocket holes.
    Last edited by trexx; 04-13-2009 at 02:42 PM. Click to view previous post history. Reason: added reason not to do.
    D-76 is a standard developer, although not one I use.
    Ansel Adams - The Negative

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