The Canon EF 70-200mm f/4.0L IS USM Lens has even better image quality and of course, IS. Relative to the Canon EF 70-200mm f/2.8L IS II USM Lens, the f/4 IS has more CA at the longer half of the focal length range and more vignetting at f/4. Otherwise, the both of these lenses have impressive image quality.
Size: For: Canon EF 70-200mm f/2.8L JW LH-83D BLACK Reversible Lens Hood For CANON EF 100-400mm f/4.5-5.6L IS II USM Lens w/ CPL ND Filter Adjustment Window
EF70-200mm f/4L IS II USM. An improved version of Canon’s f/4 L-series fixed aperture telephoto zoom lens, popular for its light weight and compact body. It features optics optimized for higher image quality, a shorter minimum focusing distance (1m), and improved image stabilisation (up to approximately 5 stops).
(Note: there are third party "clone" petal-shaped hoods available for the f4 versions, if really wanted). - The f2.8 lenses use 77mm filters, which are a fairly standard size among Canon lenses. The f4 lenses use a 67mm filter, with is rather less common size among Canon lenses, tho it seems to be becoming more common on newer models.