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Message: <blockquote data-quote="Kevin Purcell" data-source="post: 1870712" data-attributes="member: 68323">I'm always pleasantly surprised by my 10x30 every time I use them. And it's even more amusing to give them to folks who haven't used IS before (or seen good edge performance).They do have (lateral) CA issues and of course are not sealed against the weather or the dust. They could fix that and do a redesign with ED objectives.Come on Canon ... we need a 10x30 L IS in a "weather resistant" enclosure (i.e. like the 50mm bins just add a plate in front of the moving objectives and perhaps a couple of gaskets). They could be the perfect bin!</blockquote>