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Message: <blockquote data-quote="pshute" data-source="post: 1755672" data-attributes="member: 59235">I tried them this morning (13 degrees C), and I can focus with one hand, but it's awkward.  I think the problem is partly that I have to reach across so far that I can't properly maintain the grip with my thumb underneath - almost, but not quite.  I.e they're just a little too big for my hands, a problem that's probably inherent to porro design, and perhaps one reason roofs have become popular.I'd say my hands are average size, maybe you have big hands.  I guess hand size is another factor in why different people prefer particular binoculars.  Maybe someone should work out how to predict which pairs will suit, given the measurements of the prospective buyer's hands, eye separation, glasses, etc, so we can avoid having to traipse from shop to shop looking for the pair with "factor x" that makes them just right.I once went through that excercise (just window shopping, not buying), and decided that a pair of Leicas was uncomfortable, yet a pair of Swarovskis felt just right.  I later discovered that my glasses were a little twisted, making all correctly aligned binoculars seem misaligned.  So, were the Swarovskis actually misaligned in the opposite direction?  One would hope not, but what other explanation could there be?</blockquote>