Canon EOS 70D Operation Manual - Page 237

Using AF to Focus (AF Method) 3 Focus the subject. Aim the AF point over the subject and press the shutter button halfway. X When focus is achieved, the AF point will turn green and the beeper will sound. X If focus is not achieved, the area frame will turn orange. 4 Take the picture. Check the focus and exposure, then press the shutter button completely to take the picture (p.216). If the camera does not focus the desired target subject with automatic AF point selection, switch the AF method to zone selection or [FlexiZone Single] and refocus. Depending on the [A1: Aspect ratio], the number of AF points will differ. At [3:2], there will be 31 AF points. At [4:3] and [1:1], there will be 25 AF points. And at [16:9], 21 AF points. Also, at [16:9], there will be only three zones. For movie shooting, there will be 21 AF points (or 25 AF points if [640x480] is set) and three zones (or 9 zones if [640x480] is set). 237