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  1. V

    blackouts at AFOV of greater than 60 degrees- why

    I think "spherical aberration" in the EP was more of an issue in older binoculars with simpler eye pieces. Modern "high end" eye pieces have a much better "eye box", so it's more about adapting to correct eye relief etc. But I could be misstaken....
  2. V

    blackouts at AFOV of greater than 60 degrees- why

    For how long did you use them? Had blackouts with my Swaro scope/EP (AFOV 65°) when starting using it but when I got used to the EP it's no longer a problem and I don't see any at all. I think it's learning curve for the hand/brain/eye, and perhaps adjusting eye cups and IPD. Longer ER than...
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