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Message: <blockquote data-quote="Sancho" data-source="post: 1513008" data-attributes="member: 27039">I agree with you, Ronald, that IS bins are confusingly rare...I don´t know why more birders don´t use them. Here in Ireland, I have never seen, in the field, another pair apart from my own 12x36 (although I do know one expert birder who has a pair....). I assume the reason for their paucity is a) they involve batteries, electronic gizmos, and look odd, and b) they come with only a 1-year guarantee, and Canon hasn´t distinguished itself in terms of Customer Service. Which is why, on the "Desert Island Bins" question posed recently on another thread, I reckoned I´d take my Swaros, not my Canons.</blockquote>