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Thread: A quickie.....

  1. #11

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    Quote Originally Posted by matt miller
    It makes sense to me that this method would work without clipped corners as well. Is that correct?
    It would, but is a little bit harder to see. With the clipped corners there is enough contrast and change in light intensity that it is very simple to see if you are vignetting one or two of the corners.

  2. #12

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    Double post....go figure..

  3. #13
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    Quote Originally Posted by matt miller
    It makes sense to me that this method would work without clipped corners as well. Is that correct?
    Yes that is true. Vignetting can be checked from the front or the back, but the clipped corners are needed for the latter.

  4. #14

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    You should be able to look from the back through the cut out corners to the lens or from the front through the lens to the gg and see the corners to check for vignetting. Either way.

    steve simmons

  5. #15

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    Quote Originally Posted by acroell
    Yes that is true. Vignetting can be checked from the front or the back, but the clipped corners are needed for the latter.

    Vignetting can be checked from the front or the back but in very critical cases it is best to do so from the back. It is true that if you look through the lens from the front and can see the corners you will have at least some light falling on the corners. However, there is a point at which you can see the corners through the front of the lens but still get some light fall off because the corner is not seeing the entire circle of the aperture of the lens, but an elliptical part of it.


    Looking through the back is more precise. If you see an elliptical shape through the aperture you are getting light on the corners but there will still be some fall off. What you need to see is a full circle through the aperture, or at least a full oval, and then you can be absolutely certain that there will be no light fall off.
    Last edited by sanking; 08-06-2004 at 05:01 PM. Click to view previous post history.

  6. #16
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    everyone thanks so much for the advice. I think Ive shot hundreds of sheets of film already (not usually plagued by much vignetting - luckily)
    Sanking yours and steves explanation were especially helpful, it makes alot more sense now.

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