Best Expert DSLR Zoom Lens
Canon EF 100-400mm f/4.5-5.6L IS II USM
Designed for full frame but equally beneficial for APS-C DSLRs users who want to gain even more zoom range, the the Canon EF 100-400mm f/4.5-5.6L IS II USM incorporates a 4-stop Image Stabilizer and a fast near-silent AF motor (USM). The lens is constructed of 21 elements in 16 groups, including Fluorite and Super UD (Ultra-low Dispersion) lens elements for high image quality across the frame and also features Canon's Air Sphere Coating (ASC) for reduced ghosting and flares. A nine-bladed circular aperture delivers smooth and impressive bokeh. The rear focusing design, with a floating element, enhances AF speed and ensures uniformity in image quality at all focusing distances. Additionally the zoom operation includes a mechanism for adjusting zoom ring torque. The lens package includes a tripod mount collar.