Canon Pro1 PowerShot Pro1 Camera User Guide - Page 94

Switching between Light Metering Modes Mode Dial Evaluative Metering is the default light metering mode. This can be switched to another metering mode. Evaluative Metering Center-Weighted Averaging Spot AE Point Center AF Point Appropriate for standard shooting conditions, including backlit scenes. The camera divides images into several zones for light metering. The camera evaluates the complex lighting conditions, such as the position of the subject, the brightness, the background, the direct light, and the backlighting, and adjusts the settings to the correct exposure for the main subject. Averages the exposure from the entire image, but places more weight on the subject at the center. Meters the area within the spot AE point frame at the center of the LCD monitor (or viewfinder). Use this mode when the subject is backlit or surrounded by bright light. Meters the spot AF point corresponding to the AF frame. 90