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  1. has530

    Veiling glare: a bird club's unanimous verdict on my 8x32 EL FP

    Yes that is what I meant, I did not mean to imply a consistent relationship, merely that field flatteners modify the distortion profile of an optical design.
  2. has530

    Veiling glare: a bird club's unanimous verdict on my 8x32 EL FP

    The purpose of a field flattening lens is to reduce Petzval field curvature, which is an error of focus. Rectilinear distortion is an error of magnification. Now given that field curvature is intimately related to variations in the focal length the field area of the system and magnification is...
  3. has530

    Veiling glare: a bird club's unanimous verdict on my 8x32 EL FP

    I think one difference that may play a large roll for individuals is pupil dilation diameter. If there is a glare-causing reflection outside of the exit pupil and one viewers pupil is wide enough to catch it and another's contracts to block it off they will have very different experience views...
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