The NEW Sigma 8-16mm F4.5-5.6 DC HSM is the only one of its kind. This is the first ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image sensors. It has an equivalent angle of view of a 12-24mm lens when used on digital camera with an APS-C size image sensor.
Crisp images in the unique perspective that only fisheye lens can provide. A superb fisheye lens with a look all its own, a fascinating perspective on landscapes, cities, crowds and special events. - Mounted on the Sony Alpha digital SLR camera, this lens provides a 24mm focal length (35mm equivalent).
The lens produces crisp images from infinity to 20cm, even at wide apertures. Sony SAL16F28 16mm F/2.8 Fisheye Lens. Four types of integrated filters can be selected by rotating the dial: Normal, O56 (accented contrast for monochrome shots), B12 (colour correction by red elimination), A12 (colour correction by blue elimination).