Sigma 8mm f/3.5 EX DG lens

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Sigma 8mm f/3.5 EX DG circular fisheye
Key features
Maker: Sigma Corporation
Image stabilization: No No
Ultrasonic motor: No No
Short back focus: No No
Macro capable: No No
Unique features: circular fisheye
Technical data
Type: circular fisheye lens
Focal length: 8mm
Frame coverage: 180 degrees
Aperture (max/min): f/3.5
Construction: 6 groups / 11 elements
# Diaphragm blades: 6
Close focus distance: 13.5cm
Max. magnification: 1:4.6
Max. diameter: 73.5mm
Max. length: 68.6mm
Weight: 400g (14.0oz)
Filter diameter: rear (Gelatin filter)
Lens hood: none
Angle of view
Horizontal: 180
Vertical: 180
Diagonal: 180
Retail info
MSRP US$ $1230

The Sigma 8mm f/3.5 EX DG is a photographic lens introduced on 9 August 2006. It is a circular fisheye lens, designed to project a 180-degree field of view in all directions onto a circular image when used on a full-frame camera. The lens is available in Canon, Nikon, and Sigma mounts.

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