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Message: <blockquote data-quote="Troubador" data-source="post: 3211490" data-attributes="member: 109211">Comparatively small perhaps but for example the FOV difference between an SF and a Uvid at 20m would be a bit more than 40cm, enough for say 10 Willow Warblers side-by-side, more than enough for a Golden Oriole sideways-on, and, considered as a 20cm annulus around the edge of a FOV would give more than enough area to be useful to give extra help to catch a warbler or dragonfly in sight.If it comes down to choosing between sharpness and FOV then I would choose the same as you but there are plenty of bins with excellent sharpness so choosing one with a really wide FOV need not entail a sacrifice in perceived detail.Lee</blockquote>