Canon EOS 5DS User Manual download pdf (Page 83)

The camera’s AF sensor has 61 AF points. The illustration below shows the AF

sensor pattern corresponding to each AF point. With f/2.8 or larger maximum

aperture lenses, high-precision AF is possible at the viewfinder center.

Depending on the lens attached to the camera, the number of usable

AF points and AF pattern will differ. For details, see pages 84

-88

AF Sensor

These focusing sensors are geared to obtain higher

precision focusing with f/2.8 or larger maximum aperture

lenses. A diagonal cross pattern makes it easier to focus

subjects that may be difficult to focus. They cover the five

AF points vertically aligned at the center.

These focusing sensors are geared to obtain high-precision

focusing with f/4 or larger maximum aperture lenses. Since

they have a horizontal pattern, they can detect vertical

lines.

These focusing sensors are geared for f/5.6 or larger

maximum aperture lenses. Since they have a horizontal

pattern, they can detect vertical lines. They cover the three

columns of AF points at the viewfinder’s center. The center AF

point and the adjacent AF points at the top and bottom are

compatible with f/8 or larger maximum-aperture lenses.

These focusing sensors are geared for f/5.6 or larger maximum

aperture lenses. Since they have a vertical pattern, they can

detect horizontal lines. They cover all 61 AF points. The center

AF point and the adjacent AF points on the left and on the right

are compatible with f/8 or larger maximum-aperture lenses.

Diagram

Cross-type focusing: f/4 horizontal + f/5.6 vertical

Dual cross-type focusing:

f/2.8 right diagonal + f/2.8 left diagonal

f/5.6 vertical + f/5.6 horizontal

f/5.6 vertical

focusing

Cross-type focusing:

f/5.6 vertical + f/5.6 horizontal

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Canon EOS 5DS User Manual Page 83