Tamron 70-210mm f/4 Di VC USD
If you do need an f/2.8, we like Tamron's SP 70-200mm G2, although it does tend to flare a bit when shooting into the sun. Canon has two current f/2.8 zooms, the 70-200mm f/2.8L IS II USM , now selling for under $2,000 due to the release of version III of the lens-optically the same, but with...
Light, compact build; Internal zoom; 1:3 macro reproduction; Crisp optics; Image stabilization; Dust and splash resistant; Fluorine protection; Optional tripod collar available; Teleconverter compatibility
Image quality dips at maximum zoom; Some distortion and vignetting; Manual focus ring omits rubberized grip