Canon's original L-series 400mm f/2.8 supertelephoto — a massive professional prime for sports and wildlife.
The Canon EF 400mm f/2.8L IS USM was one of Canon's flagship super-telephoto primes, designed for professional sports and wildlife photography. The L-series designation, f/2.8 aperture, and IS stabilisation made it the gold standard for action photographers using Canon EOS systems.
Optically outstanding — sharp even wide open at f/2.8 with exceptional contrast. The fast f/2.8 aperture enables action-stopping shutter speeds in lower light and provides meaningful subject separation at 400mm. IS provides stabilisation for handheld use. Ring USM AF is instantaneous.
Canon EF mount with drop-in 52mm filter holder. Extremely heavy — approximately 5370g. Fluorite and UD elements for aberration control. Full weather sealing. Tripod/monopod collar. 1.4x and 2x extender compatible. Requires significant physical support.
Available used at professional prices. The Mark II and Mark III versions improved optics and reduced weight. Check IS mechanism and AF motor operation carefully on used copies. A lens that defines professional sports photography — used by thousands of photojournalists worldwide.