The 12-28mm f/4.0 AT-X Pro DX Lens for Nikon from Tokina is a wide-angle to standard length zoom lens with a maximum aperture of f/4.0. It is compatible with Nikon DX cameras and provides a 35mm focal length equivalency of 18-42mm. This compact lens features a one-touch AF/MF clutch operation to switch back and forth between auto and manual focus, for manual focus slide the focus ring back and for autofocus allow to the ring to rest in the forward position. A newly designed GMR (magnetic precision) AF sensor is mounted close to the AF motor and provides fast, accurate AF. The lens' SD-M (Silent Drive-Module) means that autofocus responds smoothly and silently, which is ideal when shooting HD video. The use of SD glass (ultra-low dispersion glass), which emulate fluorite glass in performance, aims to eliminate chromatic aberration and aspherical lens elements in both the front and rear lens groups correct distortion and also helps to minimize aberrations for sharp imaging throughout the zoom range. Wide-angle to standard length zoom provides 35mm focal range equivalency of 18-42mm. An AF/MF clutch mechanism provides one-touch control when switching between auto and manual focus. A GMR (magnetic precision) sensor offers fast, accurate autofocus and the SD-M (Silent Drive-Module) means that the AF motor is virtually silent, which is important when shooting HD video. Ultra-low dispersion glass and aspherical lens elements minimize distortion and aberrations for sharply rendered images throughout the zoom range.

• Manufacturers 3 Year Limited USA Warranty card is included in the box. For all repairs, USA warranty card and an authorized USA retailer's sales receipt must be sent together.
• A new optical design using a spherical elements and super-low dispersion glass.
• The new AF "GMR magnetic precision" control sensor is capable of fast auto-focus.
• Fits Nikon DX Cameras 18-42mm Equivalency in 35mm Format
• The lens has a 77mm filter size allowing filters such as the Hoya HD2 low-profile circular polarizer or UV to be used.

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