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Message: <blockquote data-quote="Mike F" data-source="post: 3585734" data-attributes="member: 142462">Until I came on this forum I'd never even thought about the way that I look through binoculars. Personally I find that I do move my eyes around the FOV (which as has been said is surely the norm) but I would say not usually beyond the central 60-70%. If, as an exercise, I look to the periphery of the image I am most definitely moving my eyes much more up and down or from side to side than I do when not using bins. In fact I find it quite unnatural and even somewhat uncomfortable to do so. AFAIK I have perfectly normal vision(!) so there's no physical reason why my eye movement would be restricted in any way - I just don't like doing it. Comparing the UVHD+ and NV with regard to image sharpness at the extremities, I would say that roughly speaking the UVHD+ is sharp in the central 80% and the NV sharp central 90% (in other words to within 10% and 5% of the edge respectively) of the FOV. So for me, in practice, I notice no difference in this respect between them because I simply don't look there. Doing so would be akin to moving my eyes as far left and right or up and down as I can in normal vision without bins, and I never do that.</blockquote>