Sigma 8mm f/3.5 EX DG lens

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

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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