The EOS 5D Mark II has a sophisticated AF system consisting of 9 user-selectable AF points, along with a total of 6 additional vertical and horizontal AF assist points. The central AF point is cross-type, and is sensitive to vertical lines at an aperture of f/2.8, horizontal lines at f/5.6. The AF system is also sensitive to its light source, and can compensate for focus errors that can occur when multiple sources illuminate a scene. AF points can be chosen by the photographer using the 5D's multi-controller or preferred control dial. Plus, the EOS 5D features a dedicated AF ON button.
The EOS 5D Mark II has a rugged new shutter designed to withstand 150,000 exposures. Combined with its impressive build quality, this new shutter ensures that the EOS 5D Mark II will thrive in challenging shooting environments.