Canon EOS-1D/DS user manual

Summary of the content on the page No. 1

select 19 of the 45 points, one at a time. With “Mark
Automatic AF Point Selection
IV” models you can manually select any one of the 45
This is the default mode. All 45 AF points are active.
points.
Whenever you’re set to Automatic AF point selection
Regardless of whether the camera is set for One-
mode, the camera will automatically choose which of
Shot AF or AI Servo AF, the AF point you manually
the 45 available points to use to achieve and maintain
select will be the only one availab

Summary of the content on the page No. 2

to automatically activate adjacent AF points and the previous AF point. To use this method, Selectable AF Point thereby expand the potential size of the AF area when you must first set C.Fn III-6-6 (AF stop button necessary. EOS-1D/1Ds models allow you to add a function/Switch to registered AF point). left and right point, a ring of six surrounding points, or an expanded cluster of up to 18 points (EOS-1D Mark Orientation Linked AF Point (EOS-1D Mk IV only) IV only), that can move around the