Canon EOS 70D Operation Manual - Page 233

Using AF to Focus (AF Method) Changes in AF Speed Depending On the AF Control Method If the AF method is set to [u+Tracking], [FlexiZone - Multi], or [FlexiZone - Single] for Live View shooting or movie shooting, the AF control method (phase-difference detection with the image sensor or contrast detection) will switch automatically depending on the lens used and functions selected, such as movie digital zoom or magnified view. This can greatly affect the AF speed and the camera may take a longer time to focus (phase-difference detection generally allows faster AF focusing). For details, refer to Canon Web site. Selecting the AF Method You can select an AF method to suit the shooting conditions and your subject. The following AF methods are provided: [u(face)+Tracking], [FlexiZone - Multi] (p.236), [FlexiZone - Single] (p.238), and [Quick mode] (p.243). If you want to achieve precise focus, set the lens focus mode switch to , magnify the image, and focus manually (p.247). Select the AF method. Under the [A1] tab, select [AF method]. Select the desired AF method, then press . While the Live View image is displayed, you can also press the button to select the AF method on the setting screen. u(face)+Tracking:c The camera detects and focuses human faces. If a face moves, the AF point also moves to track the face. 1 Display the Live View image. Press the button. X The Live View image will appear on the LCD monitor. 233