Canon EOS-1Ds Mark III

Canon’s legendary autofocus technology is now even better. Redesigned from the ground up, the AF system of the EOS-1Ds Mark III provides increased sensitivity, easier navigation and improved performance in the field. The new AF sensor features 19 cross-type AF points — extremely accurate when shooting with f/2.8 and f/5.6 lenses — and 26 Assist AF points for quicker, more precise focusing. Instead of being clustered in the middle, the user-selectable cross-type AF points are now distributed evenly across the entire sensor area and can be set to the inner or outer nine AF points. The AF points are expandable when using manual AF point selection. Canon has also incorporated a sensor to detect the light source characteristics. Slight focusing errors can occur due to different spectral characteristics of the light source. Such errors are corrected automatically. This assures consistent and highly precise autofocus even in challenging environments and under varying light sources.

For more intuitive operation to meet the needs of demanding professionals, the Multi-controller can be configured to select AF points*. You can also adjust the AI Servo AF tracking method and subject priority settings, focus tracking sensitivity and other AF parameters, giving you greater control over focusing strategies. There is even an AF micro-adjustment setting that allows you to register minute changes to the focus point for up to 20 lenses. Your custom AF settings can also be stored for easy recall depending on shooting conditions. Additionally, AF sensitivity has been expanded to cover a range of EV-1 to 18 (ISO 100 at normal temperatures) and improvements to the AI Servo AF now allow you to track and capture rapidly moving subjects in less than desirable lighting environments.

* C.Fn III-9 (Requires firmware version 1.1.2 or later.)