Minolta Maxxum 9 Instruction Manual page 15

FOCUS - Predictive Focus Control
Predictive Focus Control determines the
subject's speed, position, and acceleration
changes from the focus sensor data, then sets
the best focus at the predicted point of
exposure.
Predictive focus control is always active in the
Automatic and Continuous autofocus modes.
With the ability to track acceleration in all
three dimensions, Predictive Focus Control
FOCUS
makes it possible for the camera to calculate
where your subject will be when the shutter
opens.
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