Sigma 8mm f/3.5 EX DG lens

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Sigma 8mm f/3.5 EX DG circular fisheye
Maker Sigma Corporation
Key features
Ultrasonic motor No No
Short back focus No No
Image stabilization No No
Macro capable No No
Unique features circular fisheye
Technical data
Type circular fisheye lens
Focal length 8mm
Crop factor 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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