This is the first ultra wide zoom lens with a minimum focal length of 8 mm, designed especially for APS-C size image sensors. The wide angle of view and exaggerated perspective enables the photographer to emphasize the subject. Four FLD glass elements and three aspherical lenses provide high image quality throughout the zoom range.The 8-16 mm F4.5-5.6 DC HSM is the first ultra wide zoom lens with a minimum focal length of 8 mm, designed especially for cameras with an APS-C size image sensor.