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Thread: OptiBoard Hall of Fame

  1. #26
    Compulsive Truthteller OptiBoard Gold Supporter Uncle Fester's Avatar
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    Seidel Aberrations--- This is why compromises have to be made when designing progressives:

    http://www.quadibloc.com/science/opt0505.htm

  2. #27
    Master OptiBoarder OptiBoard Gold Supporter
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    thats a very concise explaination of higher order abberrations, thank you for that

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