Inside the shake reduction unit
Inside the innovative PENTAX Shake Reduction
mechanism, two angular velocity sensors are used
to detect the amount and direction of camera shake.
The data accumulated by these sensors is transmit-
ted to the camera’s CPU to instantly calculate the
vertical and horizontal shift levels required to com-
pensate for camera shake. The image sensor is then
shifted at the optimum levels using magnetic force
generated by the permanent magnets on the front
plate and the electrical magnets on the center plate.
Since this mechanism does not require a mechani-
cal guiding device, it is free of power loss for quick
response and speedy operation. The image sensor is
firmly supported by the three ball bearings installed
on the back plate for pinpoint positioning.
Electrical magnet
Permanent magnets
Center plate
Front plate
Position sensor
Image sensor
Back plate
Position support
ball bearing
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