107AF Area Selection ModesAll the AF points are used to focus. This mode is set automatically inBasic Zone modes.With One-Shot AF, pressing the shutter buttonhalfway will display the AF point(s) <S> thatachieved focus. If multiple AF points are displayed,it means they all have achieved focus. This modetends to focus the nearest subject.With AI Servo AF, the manually-selected (p.105) AFpoint <S> is used first to achieve focus. The AFpoint(s) achieving focus is displayed as <S>.19-point Automatic Selection AFWhen AI Servo AF mode is set with 19-point automatic selection AF orZone AF, the active AF point <S> will keep switching to track thesubject. However, under certain shooting conditions (such as when thesubject is small), it may not be able to track the subject. Also, in lowtemperatures, the tracking response is slower.If the camera cannot focus with the EOS-dedicated external Speedlite’sAF-assist beam, set the AF area selection mode to Single-point AF(manual selection) and select the center AF point to autofocus.When the AF point(s) light up, part or all of the viewfinder may light up inred. This is a characteristic of AF point display (using liquid crystal).If you set [8C.Fn II-9 : Orientation linked AF point] to [1: Selectseparate AF points], you can set the AF area selection mode andmanually-selected AF point (or zone) separately for vertical and horizontalshooting (p.373).
