Canon EOS 70D Operation Manual - Page 370

3 Custom Function SettingsN C.Fn II -4 AI Servo 2nd image priority You can set the AF operation characteristics and shutter-release timing during continuous shooting after the first shot with AI Servo AF. Equal priority: Equal priority is given to focusing and continuous shooting speed. In low light or with low-contrast subjects, shooting speed may slow down. : Shooting speed priority Priority is given to the continuous shooting speed instead of achieving focus. The continuous shooting speed does not slow down. Convenient when you want to maintain the continuous shooting speed. : Focus priority Priority is given to achieving focus instead of the continuous shooting speed. The picture is not taken until focus is achieved. Effective when you want to achieve focus before capturing the shot. 370