The Sigma 10mm f/2.8 EX DC fisheye is a photographic lens manufactured by Sigma Corporation. It is a diagonal fisheye lens. Unlike most fisheye lenses, this lens is designed for digital SLR cameras that do not have a full 36x24mm sensor.^[1] This results in a much greater fisheye effect than is possible when a full-frame fisheye lens is used with a smaller sensor. The projection type of this lens is equidistant^[2]

Sigma 10mm f/2.8 EX DC HSM fisheye

Maker	Sigma Corporation
Technical data
Type	diagonal fisheye lens
Focal length	10mm
Crop factor	Varies by sensor size
Aperture (max/min)	f/2.8 - f/22
Close focus distance	13.5cm
Max. magnification	1:3.3
Diaphragm blades	7
Construction	12 elements in 7 groups
Features
Short back focus	No
Ultrasonic motor	Yes
Lens-based stabilization	No
Macro capable	No
Unique features	fisheye
Physical
Max. length	83.1mm
Diameter	75.8mm
Weight	475g (16.8oz)
Filter diameter	rear (Gelatin filter)
Accessories
Lens hood	built-in petal
Angle of view
Diagonal	180° (Sony Alpha, Nikon D), 157° (Sigma SD), 167° (Canon)
History
Introduction	Nov. 2007
Retail info
MSRP	$1000 USD

This lens is available in Canon, Nikon, and Sigma, Pentax, and Sony mounts.