Lee,
Thanks for checking on that, but you needn't have almost unscrewed your eyeballs. Moving your eyes toward the edges, however, is a good test for "image blackouts."
All you need to do to test edge performance, at least for birding purposes, is locate a bird or a small object and slowly move it toward the outside edge of the binoculars, noting at which point the image blurs and then try to refocus the image at that point, move it bit farther out and refocus. The idea is to identify how large the sweet spot is and what's going on beyond that point, field curvature or astigmatism.
Allbinos didn't like the astigmatism in the 10x42 model, Arek thought the 8x32 was much better in this regard, so a bigger sweet spot is a welcomed change for those bothered by "edge effects".
PS - sorry for the sidetracking Troub, looking forward to the rest of your review!
Troub - sorry for the sidetrack, looking forward to the rest of your review!
I wouldn't be as "doom and gloom" as James, though he is right to some extent, edge performance is something that birders are finally noticing. This wasn't always the case and is still not the case for many birders.
I found that once I tried bins with good edges - Nikon WF, SE, EII, LX, and EDG, and Swaro EL and SLCneu - it's hard to go "backa".
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