Canon PowerShot SX40 HS PowerShot SX40 HS Camera User Guide - Page 91

Shooting with the AF Lock The focus can be locked. After locking the focus, the focal distance will not change even when you release your finger from the shutter button. Lock the focus. z Keep the shutter button pressed halfway and press the q button. X The focus locks, and and the MF indicator appear on the screen. z After you release your finger from the shutter button, press the q button again, then press the qr buttons or turn the 5 dial to choose . The focus will unlock. Compose the scene and shoot. Shooting with Servo AF While the shutter button is pressed halfway, the focus and exposure will continue to adjust, allowing you to take pictures of moving subjects without missing a shot. Choose [Servo AF]. z Press the n button to choose [Servo AF] in the 4 tab, then press the qr buttons to choose [On]. Focus. z The focus and exposure will be maintained where the blue AF frame appears while you press the shutter button halfway. • The camera may not be able to focus in some conditions. • In low light conditions, AF frames may not turn blue even after pressing the shutter button halfway. In this case, you can set the focus and exposure with the AF frame setting. 91