Great goal to cut to the same 70-200 F / 4 of the series (not yet sold!) ... + 290grs heavy but more compact. Mounted on a 7D it complements the EF-S 15-85mm 3.5 / 5.6 IS (also excellent)) mounted on a 2nd 500D case. A UV filter was immediately added as protection of the front lens. Too bad the tripod collar is so expensive ... but in most cases the pictures are taken freehand with the ruthless efficiency of stabilization ... and it would still burdened all !! Thank you Dad Christmas ... and Amazon for its quick delivery and careful of over-packaging. So happiness. I can only strongly recommend it. Happy New Year 2014 ... Sincerely,