I have a B&L Elite 15-45 that weighs 26 ounces ...same scope as the Nikon Owl with similiar zoom range but the Nikon is not phase corrected. Superior scope to anything in the price range. I could have gone to a Leica 77 mm Televid at the time but 50+ ounces plus tripod is a bit much to lug around...The Swarovski looked like a Rube Goldberg contraption. The newer Swarovskis and Leicas and now Zeiss have slimmed down a bit and should be looked into.