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Message: <blockquote data-quote="aroy" data-source="post: 326331" data-attributes="member: 16090">From 2000' up, you need a good telephoto prime of 200mm or 300mm. 140 will be too short, you get a panorama but very little detail. In general barring expensive professional zooms, the normal relatively inexpensive zooms have pretty ordinary (if not bad) IQ at the long end. They may be fine for occasional use or for magnifying nearby objects, but pretty bad at 2000 feet distance.What you need at that altitude is a well corrected manual focus lense. Lenses for Aerial survey are the best, but are way out of budget for most of us.</blockquote>