Sigma 300-800mm F5.6 EX IF HSM
Launched September 2002

A 300mm telephoto to 800mm ultra-telephoto zoom lens featuring a constant large aperture through its entire range.

The Sigma APO 300-800mm F5.6 EX IF HSM is one of several new products to be introduced at Photokina 2002 by Sigma Corporation of Japan (2-3-15, Iwado-Minami, Komae-shi, Tokyo, Japan).　Sigma APO 300-800mm F5.6 EX IF HSM provides a constant F-number from 300mm telephoto to 800mm ultra-telephoto. This super-telephoto zoom lens has a horizontal angle of view of 6.9°at 300mm and 2.6°at 800mm. Its ability to zoom from a fixed position offers unparalleled versatility in composing an image. It incorporates two pieces ELD (Extraordinary Low Dispersion) glass in the front for effective compensation of chromatic aberration.

Since focusing and zooming do not change its overall length, this lens offers ease of handling and operation. The HSM ensures a quiet, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, Nikon mount lenses. A 46mm filter can be inserted near the rear of the lens, and a circular polarizing filter can be used. When this lens is used with the 1.4x EX or 2x EX Apo Tele Converters (optional), it becomes a 420-1120mmF8 MF lens or a 600-1600mm F11 MF lens respectively.

The lens materials used in this new lens are lead and arsenic free ecological glass.

Specifications
Construction	18 Elements in 16 Groups
Focal Length	300-800mm
Maximum Aperture	ƒ5.6
Minimum Aperture	ƒ32
Field of View	8.2-3.1°
Minimum Focus Distance	600cm
Number of blades	9
Maximum Magnification	1:6.9
Zooming System	N/A
Filter Size	46mm Rear
Diameter	165.5mm
Length	541.5mm
Weight	6Kg
SRP at launch:	N/A
Available Mounts:	Sigma, Canon, Nikon (D)