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Message: <blockquote data-quote="gulf1263" data-source="post: 3171584" data-attributes="member: 99783">For long periods of observation I believe the 7x is superior.The military of most countries to include the USA use 7x bino's of one sort or another.I have used the 7x50 (when younger and could support the weight) and 7x42's for critical observation when my life literally depended on it.Many US units in Vietnam used the Bushnell 7x35 and Nikon 7x50 Trop, the NVA had the aus Jena 7x40's and Soviet 6x24's.A lot of folks make the mistake of believing the bigger image of an 10x is better, forgetting that handshake which sets in fairly quickly for most, will make them less than desirable over time spent observing.IMHO, for handheld observation over long periods of time, the 7x format is superior.Art</blockquote>