Pentax 21650, 21717 About lenses with a supersonic motor, Supersonic motor compatible camera body

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About lenses with a supersonic motor

The lenses in the table below are equipped with internal supersonic motors. When mounted on a camera body that supports supersonic motors, the autofocus (AF) is quiet and smooth.

• Supersonic motor compatible camera body

, , *,

* If the firmware is version 1.30 or later, refer to page 10.

Lens	Precautions
	Lens uses a supersonic motor. When the lens is
	mounted on a camera body that does not support
DA17-70mm f/4 AL [IF] SDM	supersonic motors (including	with
	firmware older than version 1.30), the autofocus
	cannot be operated by either the AF motor in the
	camera body or the supersonic motor.
DA 16-50mm f/2.8ED AL [IF] SDM	When the lens is mounted on a camera body that
DA 50-135mm f/2.8ED [IF] SDM	does not support supersonic motors (including
DA 200mm f/2.8ED [IF] SDM	with firmware older than version 1.30), the
DA 300mm f/4ED [IF] SDM	autofocus is operated by the AF motor in the camera
	body.

* In both cases focusing can be done manually.