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.
| Specifications | |
| 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 |