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Thread: Anti-Aliasing Filters...with or without??...

  1. #1
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    Default Anti-Aliasing Filters...with or without??...

    Hiee all....

    Just thought it might be good to share this info on the use of anti-aliasing filter in digital cameras.....some cameras have them and some don't.......see how it may impact your captured image....

    http://www.wfu.edu/~matthews/misc/DigPhotog/alias/

    One good read on an example of a cmera which does not use anti-aliasing filter.....in trade off to gain sharpness (Perceived by the eyes....read on)...

    http://www.imaging-resource.com/PRODS/SD9/SD9A12.HTM

    rgds,
    sulhanb
    Last edited by sulhan; 30th June 2004 at 01:52 PM.

  2. #2
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    Default

    Thanks for the link sulhan, it was a very interesting read.

  3. #3
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    Default

    The problem with the test converted in the first link is the two cameras compared, the D60 is a 6mp chip and the SD9 is a 3.3mp Foveon X3. While the comparison image illustrates the problem of moire, it doesn't illustrate the detail advantage a non-AA filtered chip possesses as far as detail and sharpness are concerned.

    Furthermore, the more pixels the chip has, the less likely aliasing and moire is likely to be an issue, because you will then have the pixels to resolve the fine repeating pattern.

    I shoot AA filtered and non-AA filtered cameras side by side, and pixel for pixel, I *much* prefer the non filtered version.

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