Sigma 135-400mm F4.5-5.6 DG 4/3
Launched September 2006


APO 135-400mm F4.5-5.6 DG

Compact telephoto zoom lens for Four Thirds system.

This telephoto zoom lens gives the equivalent field of view to our popular 800mm when used on Four-Thirds cameras.

The very latest lens coating technology and lens design reduce flare and ghosting, a common problem with digital cameras. This lens uses one aspherical lens and three Special Low Dispersion (SLD) glass elements for excellent correction of various aberrations.  The rear focusing system ensures fast focusing speed as well as preventing the front of the lens rotating, making it particularly suitable for use with circular polarising filters. A removable tripod collar is included as a standard component.

Construction 13 Elements in 11 Groups
Focal Length 135-400 (270-800)mm
Maximum Aperture ƒ4.5-5.6
Minimum Aperture ƒ32
Field of View 9.2-3.1°
Minimum Focus Distance 200-220cm
Number of blades 9
Maximum Magnification 1:5.3
Zooming System N/A
Filter Size 77mm
Diameter 88.5mm
Length 183.6mm
Weight 1245g
SRP at launch: £479.99
Available Mounts: Four-Thirds