Its Vibration Reduction technology compensates for up to 4 stops of shutter speed in order to reduce the effects of camera shakes. Use the rounded 7-blade aperture diaphragm to produce smooth out-of-focus elements. The pulse-stepping motor AF system comes in handy to ensure an accurate, silent focus that works well while shooting both videos and still images. The 2 aspherical elements minimize distortions throughout the entire zoom range for maintaining an edge-to-edge sharpness and illumination, whereas the Super Integrated Coating suppresses flare and ghosting in your photos.