Canon’s EF 70-200mm f2.8L IS II USM is a professional workhorse for both cropped and full-frame bodies. Like the model above it enjoys USM focusing, Image Stabilisation and ‘L’ quality, but what makes it really special is the constant f2.8 aperture allowing faster exposures for action shots and delivering nice blurred backgrounds for portraits. This aperture makes the lens relatively large, heavy and pricey, but it remains a coveted option.