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Message: <blockquote data-quote="David Swain" data-source="post: 2316425" data-attributes="member: 78199">Frank,Those are some useful layman's terms for categories of visual experience.  Each of those terms, however, has a significant semantic "field" (i.e. breadth of meaning), and are subject to a lot of slippage and interpretation; but I think they are useful nonetheless if folks don't take them too technically and simply use them to represent visual priorities served by a given device.  To these terms I might add practical performance as a general term encompassing ergonomics, ER, cold weather and wet weather performance.In my case, 8x30 EIIs give me very pleasing object and field performance, but represent significant compromises in practical performance.Thanks for the good thread starter!David</blockquote>