Canon Rebel T5i EOS 700D Instruction Manual page 102

[] Selecting the AF Point*
AF operation and Maximum Lens Apertures
With maximum apertures up to f/5.6:
Cross-type focusing (vertical and horizontal lines detected
simultaneously) is possible with all AF points. With certain lenses (see
below), the off-center AF points will detect only vertical or horizontal
lines (no cross-type focusing).
With maximum apertures up to f/2.8:
High-precision AF* with vertical and horizontal lines detection is
possible with the center AF point, in addition to the cross-type focusing
(vertical and horizontal lines detected simultaneously).
The remaining eight AF points enable cross-type focusing in the same
way as when using lenses with maximum apertures up to f/5.6.
* Exceptwith the EF28-80mm f/2.8-4LUSMand EF50mmf/2.5CompactMacro.
_}f You use an Extender (seld separately) and ihe maximum aperture
becomes smaller than fl5.6, AF shooting will not be possible (except in
[_¢Trackjng], [RexjZone .. Multi], and [FlexiZone _Single] during Live
View shooting). For details, refer to the Extender!s instruction manual:
Lenses not Enabling CrosS=Type Focusing With all AF Points
The following lenses enable only horizontal-line sensitive focusing with
the three AF points on the left and the three AF points on the right and
only verticaNine sensitive focusing with the top and bottom AF points.
Cross-type focusing is possible only with the center AF point.
EF35-80mm f/4-5.6
EF35-80mm f/4-5.6 II
EF35-80mm f/4-5.6 ill
EF35-80mm f/4-5.6 USM
EF35-105mm f/4.5-5.6
EF35-105mm f/4.5-5.6 USM
EF80-200mm f/4.5-5.6 II
EF80-200mm f/4.5-5.6 USM
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