Sigma 8mm F4
Launched September 1992

8mm f4 1992

Sigma Fisheye 8mm F4 Lens

Sigma fisheye lens 8mm f/4 is rendering 180 degree circular image of 22mm. It is equisolid angle projection type fisheye lens. This lens can be used for measurement of clouds etc.

Construction 11 Elements in 7 Groups
Focal Length 8mm
Maximum Aperture ƒ4
Minimum Aperture ƒ22
Field of View 180°
Minimum Focus Distance 20cm
Number of blades 5
Maximum Magnification N/A
Zooming System N/A
Filter Size 22.5mm
Diameter 73.5mm (max.)
Length 59.5mm
Weight 375g
SRP at launch: N/A
Available Mounts: Canon, Nikon, Minolta, Pentax, Olympus, Ricoh, Contax, Yashika, Praktica-S, Praktica-B