2. Metering Modes

Evaluative Metering ( )

This is an all-around metering mode suited even for backlit subjects. The viewfinder is divided into 21 metering zones. All the focusing points are linked to the evaluative metering zones. After detecting the main subject’s size, position, brightness, background, front and back lighting, etc., the camera sets the proper exposure.

In the manual focusing (MF or M) mode, evaluative metering centers on the center focusing point.

If the subject brightness and background light level are very different (there is a strong backlight or spotlight), use partial ( ) or spot metering ( ) instead.

Partial Metering ( )

This mode is effective when the background is much brighter than the subject (due to backlighting, etc.). The metering is weighted at center of the viewfinder by about 8.5%.

Spot Metering ( )

This is for metering a particular part of the subject or scene. The metering is weighted at center of the viewfinder by about 2.4%.

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Canon EOS-3 manual Metering Modes, Evaluative Metering, Partial Metering, Spot Metering