This auto-focus circular fisheye lens has an angle of view of 180 degrees in all directions. SLD (Special Low Dispersion) glass provides effective compensation of chromatic aberration. Sigma's Super Multi-Layer Coating minimises flare and ghosting.
This lens is equipped with a Petal-type hood to block out extraneous light. The Super Multi-Layer Coating reduces flare and ghost and ensures high image quality throughout the entire zoom range. This lens has a maximum magnification ratio of 1:3.1 (at the focal length of 200mm) making it ideal for close-up photography.