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Message: <blockquote data-quote="Alexis Powell" data-source="post: 3531845" data-attributes="member: 5327">Thanks for this question--I was wondering the same. I'm guessing that the Monarch HG corrects astigmatism and doesn't correct field curvature much, but we don't have enough information to know whether anything at all is corrected. Can the Monarch HG view at the periphery be brought into sharp focus (even if not in synchrony with sharp focus in the center)? Is the periphery at its sharpest focus (even if still blurry) when the center is at its sharpest focus? I hope the former rather than the latter because I prefer a bin w/curved field and low astigmatism (e.g. Nikon 8x32 SE, Leica 8x32 BN) over a bin w/astigmatism but low field curvature (e.g. B&L 8x42 Elite waterproof, Zeiss 8x32 FL).--AP</blockquote>