Sigma 400mm F5.6 APO
Launched September 1988

400mm f5.6 1988

Sigma 400mm F5.6 APO for Canon EOS 620, 650 and all MF mounts

To minimize the colour aberration, which is the inherent problem of ultra telephoto lens, this lens is using 2 ultra low dispersion glasses in the front lens group. To have high speed AF mode and avoid heavy load to the AF motor, it incorporates inner focusing system. In addition, with a floating lens element system, it will produce high contrast and sharp image in entire focusing range from infinity to closest distance of 4 meters. It is a lightweight, compact, ease to use, high performance ultra APO telephoto lens.

Construction 11 Elements in 8 Groups
Focal Length 400mm
Maximum Aperture ƒ5.6
Minimum Aperture ƒ22
Field of View
Minimum Focus Distance 400cm
Number of blades N/A
Maximum Magnification 1:9.5
Zooming System N/A
Filter Size 72mm
Diameter 85mm (max.)
Length 213.5mm
Weight 1,100g
SRP at launch: N/A
Available Mounts: AF: Canon

MF: Nikon, Canon, Minolta, Pentax, Olympus, Ricoh, Contax, Yashica