Improved optical performance delivers even higher image quality

Optimally positioned GMo aspherical lenses deliver reduced distortion & improved balance of image quality & brightness.

F4 stop Image Stabilizer

Image Stabilizer permits the use of shutter speeds up to four stops slower than normal, enabling hand held shooting in challenging lighting conditions.

Constant f/4 aperture
The f/4 maximum aperture of this lens is fixed throughout the focal-length range, so shutter speeds will not change as the lens is zoomed.
 
Beautiful background blur

10 blade circular aperture delivers more appealing and rounded bokeh.

Reduce flare and ghosting with ASC

Air Sphere Coating (ASC) guards against ghosting and flare to deliver superb image quality.

Quiet autofocus in movie mode

Refinements to the Ultrasonic Motor (USM) delivers low-speed driving and noise reduction for improved movie compatibility.