Focus points: Multiple focusing points
Cameras with just a single central focusing point are the EOS-1, 100, 1000, 1000F, 1000N, 1000FN, 600, 620, 650, 700, 750, 850 and RT.
The first camera with multipoint focusing was the EOS 10. It is also used by the EOS 50, 50E, 500N, IX and IX 7.
Five-point focusing is found on the EOS D2000, DCS 1, DCS 3, 1N, 1N RS and 5.
Seven-point focusing is found on the EOS 10D, 300D, 350D, 30, 30V, 33, 33V, 300, 300V, 3000V and 300X
Nine-point focusing is found on the EOS 20D, 20Da, 30D, 40D, 400D
EOS 5D. The points shown in black are visible. The six supplemental points (red) are only visible in ZoomBrowser or ImageBrowser software.
The points shown in solid red are f/2.8 sensitive. The other points are f/5.6 sensitive. These extra (red) points are focus assist points that help the central focus point acquire focus.
45-point focusing is a feature of the EOS-1D, 1D Mark II, 1D Mark II N, 1D Mark III, 1Ds, 1Ds Mark II, 1Ds Mark III, 1V and 3.
Forty-five focusing points is a lot to scroll through in manual selection, so Custom Function 13-1 lets you reduce the number to 11, while Custom Function 13-3 reduces the number further to just 9 (not EOS 3).
With the EOS-1D Mark III and 1Ds Mark III, the same reduction is made with Custom Function III-9-1 (11 points) and III-9-2 (9 points). These limits only apply during manual point selection; during automatic selection, all 45 points are available.
The EOS-1D Mark III and 1Ds Mark III allow you to select any of 19 AF points. The remaining 26 AF points are not user-selectable, but become active in automatic AF point selection.
The selection is limited to the 9 inner points when Custom Function III-9-1 is set.
The selection is limited to 8 outer points, plus the centre point when Custom Function III-9-2 is set.