Metering Modes; Evaluative Metering ( ); Partial Metering ( ); Spot Metering ( ) - Canon EOS-3 Instructions Manual

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 (
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%.
) or spot
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