The EF 400mm f/2.8L IS II USM is a highly-regarded Canon L-series lens designed for outdoor, wildlife, and sports photography. With its super telephoto focal length and bright f/2.8 maximum aperture, it offers excellent control over depth of field, allowing you to isolate subjects with selective focus. The wide aperture also facilitates shooting in challenging lighting conditions. The lens incorporates two fluorite elements to minimize color fringing and chromatic aberrations, resulting in high image clarity and accurate colors. A Sub Wavelength Coating is applied to individual elements to suppress flare and ghosting, enhancing contrast and color neutrality when shooting in backlit conditions.
In addition to its optical performance, the EF 400mm f/2.8L IS II USM features an advanced four-stop Image Stabilizer system with three different stabilization modes, catering to various shooting scenarios. The lens is equipped with a ring-type Ultrasonic Motor (USM) that delivers fast, quiet, and precise autofocus performance. It also allows full-time manual focus override for fine-tuning focus manually. The lens is weather-sealed, making it suitable for use in challenging environmental conditions, and it comes with a removable rotating tripod collar, which is beneficial when shooting from a tripod or monopod.