SIGMA 8 mm F3,5 EX DG CIRCULAR FISHEYE for Canon

Extremely wide EX lens from the famous Sigma company has been designed as a circular fisheye. This means that the picture is, unlike the usual type, centered in a circle and does not cover the entire image. Thanks to measurable distortion, the lens can be used for science, technology as well as in many other sectors. It features an anti-reflective layer Super Multi Layer (SML)  that minimizes flare and ghosting from Sensors .
The lens features a  fixed focal length 8mm and a maximum aperture of f/3.5. It has been designed for digital and film SLR cameras with compatible bayonet.
Specifications:
Designed for cameras:
Canon
Lens:
f/3.5 (f/32 minimum aperture)
Focal length:
8mm
Lens construction:
11 Elements in 6 Groups
Viewing angle:
180°
Minimum focusing distance:
20cm
Aspect Ratio:
1:13,9
Filter:
Bayonet film filter in the rear part of the lens
Dimensions (diameter x length):
73.5 x 62 mm
Weight:
0.32kg
Colour:
Black