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Thread: Why does the ground glass lack four corners?

  1. #11
    Tin Can's Avatar
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    Dec 2011
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    Re: view grid ground glass

    Many newer metal cameras have air pressure vents

    My Studio Deardorff moves a lot of air and dust, and I made my GG with cut corners, I can feel the breeze
    Last edited by Tin Can; 28-Mar-2021 at 07:29. Reason: added a bit
    Tin Can

  2. #12
    Jim Jones's Avatar
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    Re: Why does the ground glass lack four corners?

    There's no mechanical vignetting if you look at the corners of the film gate through the lens and see no restriction of the aperture by the lens mount.

  3. #13

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    view grid ground glass

    why the view grid ground glass has no 4 corners ?

  4. #14
    Mark Sawyer's Avatar
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    Stuck inside of Tucson with the Neverland Blues again...
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    Re: view grid ground glass

    So you can peek through the corners to see the lens aperture. If you can see the full aperture, you are not vignetting the image.
    "I love my Verito lens, but I always have to sharpen everything in Photoshop..."

  5. #15
    Drew Bedo's Avatar
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    Re: Why does the ground glass lack four corners?

    Yeah . . .I had always just thought it was to let the air out.
    Drew Bedo
    www.quietlightphoto.com
    http://www.artsyhome.com/author/drew-bedo




    There are only three types of mounting flanges; too big, too small and wrong thread!

  6. #16

    Join Date
    Apr 2020
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    Re: Why does the ground glass lack four corners?

    If I recall correctly, some early cameras have rising corners, so you cut the corner by a specific amount to get the glass to sit in the frame at a specific height.

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