The AF-S Silent Wave Motor in the 18-105mm VR yields speedy, silent, on-the-money AF performance with

fulltime manual focus override.  In particular, the AF-S motor keeps up with skittish, erratic subjects that

overwhelm normal camera-driven-motor AF systems.  You’ll get more ‘keeper’ images of those fast-moving

animals, athletes, children, vehicles and the like.

Along with the SWM (Silent Wave Motor), the 18-105 benefits from the VR Image Stabilizer built in to the

lens, which will give you the ability to handhold the camera at shutter speeds up to three stops slower than

would otherwise normally be possible.  Always a benefit to a handheld pic, this is of particular usefulness

whenever you’re photographing slow-moving subjects in low light.  The benefit of in-lens stabilization is seen

in the viewfinder, making composing and capturing the image easier as well.