Sigma 4.5mm f2.8 EX DC HSM Circular Fisheye Lens Canon Fitting
Circular fisheye lens for use with digital SLR cameras with an APS-C sized sensor only. 180 degree angle of view. Fast f2.8 maximum aperture. 13.5cm close focus. Maximum magnification of 1:6. Uses rear mounted gelatin filters. HSM motor for ultra quiet and quick auto focus operation.