Canon PowerShot SD4000 IS PowerShot SD4000 IS / IXUS 300 HS Camera User Guide - Page 87

Changing the Metering Method • The camera may not be able to focus in some conditions. • If a correct exposure cannot be obtained, the shutter speed and aperture value appear in orange. Release your finger from the shutter button, then press it again halfway. • In low light conditions, AF frames may not turn blue even after pressing the shutter button halfway. In this case, focus and exposure are locked. • The [AF-Point Zoom] option in the 4 tab is not available in Servo AF mode. • Not available when using Self-Timer (pp. 68, 79, 80). Changing the Metering Method You can change the metering method (brightness measuring function) to match the shooting conditions. Choose the Metering method. ∆ After pressing the m button, press the op buttons or turn the - dial to choose , then press the m button. Choose an option. ∆ Press the op buttons or turn the - dial to choose an option, then press the m button. The setting will appear on the screen. Evaluative Suitable for standard shooting conditions, including back lit shots. Automatically adjusts the exposure to match the shooting conditions. Center Averages the light metered from the entire frame, but gives greater Weighted Avg. weight to the center. Spot Only meters within the (Spot AE Point frame) that appears at the center of the screen. 87