Average-/Spot-Metering - Minolta 9000 Service Manual

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5. Average-/Spot-metering
1, Midtone reading.
2. Highlight reading (with AE lock button pressed).
3, Shadow reading (with AE lock button pressed).
When AE lock button is pressed in H 'highlight! or S 'shadow, metering mode, exposure is adjusted
to ensure greater exposure accuracy corresponding to metering mode setting.
Light metering path
1, Metering sensor is located at the bottom of mirror box.
2, Metering sensor is compound SPC, When average metering. whole SPC is used. When spot metering,
center portion of SPC is used to meter the portion of spot metering circle in viewfinder.
For average metering -SPCA+SPCs
-SPCs
For spot metering
3. Metering area is changed over electrically.