Tokina AF 12-24mm f4 lens, The Nikon mount AT-X 124 PRO DX II has a built-in AF motor drive. The motor inside the lens was loaded onto the Nikon mount specification anew.

The AF operates smoothly and quietly due to a DC motor that uses a new AF control gear assembly. With the built-in motor, the lens can be used in AF mode with the Nikon D60 and D40 and other silent wave bodies.
The Canon version of the lens already has a built-in AF motor and will benefit from the improved multi-coating.
The optical system of original AT-X 124 PRO DX won awards for its sharpness world-wide. This design was maintained in the AT-X 124 PRO DX II and improved with the introduction of new multi-coating_ system. The new multi-coating helps reduce reflections that can cause flare and ghosting even more than in the AT-X 124 PRO DX.
The AT-X 124 PRO DX II features the one-touch focus clutch mechanism. _ To use the one-touch focus clutch mechanism, move the focus ring forward, towards the front of the lens, for AF or back for MF. This allows for a fast and easy manual over-ride in difficult lighting situations.
Digital single-lens reflex DX lens_ dedicated to digital SLR cameras with APS-C sized sensors.

Detailed specifications of the Tokina AF 12-24mm f4 lens

Focal length:	12-24mm
Maximum Aperture:	F/4
Minimum Aperture:	F/22
Optical Construction:	13 Elements / 11Groups
Coatings:	Multi-layer Coatings
Angle of view:	99 _ - 61°
Minimum Focus Distance:	11.8 in. (30cm)
Macro Ratio:	1:8
Zoom system:	Rotary type zoom
Aperture blades	9
Filter Size:	77mm
Lens diameter:	3.46 in. (84mm)
Total length:	3.5 in. (89.5mm)
Weight:	19.0 oz. (540g)
Included Accessories:	BH-777 Star bayonet hood
Mount availability:	Nikon digital/CANON digital*