Sigma 100-300mm F4 EX DG/HSM
Launched January 2006
APO 100-300mm F4 EX DG/HSM
A large aperture telephoto zoom lens, optimized for digital SLR cameras.
- Four Special Low Dispersion (SLD) glass elements provide excellent imaging capability.
- New multi layer lens coating and design minimises flare and ghosting.
- Internal focusing and an inner zooming system ensures ease of use and versatility.
- Hyper Sonic Motor (HSM) provides silent, high-speed and precise auto-focusing with full time manual focus override.
The Sigma Corporation is pleased to announce the launch of the new 100-300mm F4 APO EX DG HSM lens.
This telephoto zoom lens provides a large F4 aperture at all focal lengths. The new multi layer lens coating and lens design reduce flare and ghosting, a common problem with digital cameras, and also creates an optimum colour balance through the entire zoom range. Two Special Low Dispersion (SLD) glass elements in the front lens group and another two in the rear group offer excellent correction of chromatic aberration. High optical performance is demonstrated throughout the entire zoom range.
The internal focusing and zooming mechanism do not change the lens’s overall length, assuring ease of handling and operation. A rotating tripod mount can be conveniently detached if required. The Hyper Sonic Motor (HSM) ensures a silent, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, and Nikon mount lenses. Since the front of the lens does not rotate, a circular polarizing filter and Petal-type hood can be easily attached. High-speed focusing is possible when this lens is used with dedicated APO 1.4x EX tele-converter. With the optional APO 1.4x EX tele-converter, this lens becomes a 140mm to 420mm F5.6 AF zoom. With the APO 2.0x EX tele-converter, a manual focus zoom lens from 200mm to 600mm F8 is achieved.
| Specifications | |
| Construction | 16 Elements in 14 Groups |
| Focal Length | 100-300mm |
| Maximum Aperture | ƒ4 |
| Minimum Aperture | ƒ32 |
| Field of View | 24.4-8.2° |
| Minimum Focus Distance | 180cm |
| Number of blades | 9 |
| Maximum Magnification | 1:5 |
| Zooming System | N/A |
| Filter Size | 82mm |
| Diameter | 92.4mm |
| Length | 226.5mm |
| Weight | 1440g |
| SRP at launch: | £899.99 |
| Available Mounts: | Sigma AF, Canon AF, Nikon AF, Pentax AF, Konica Minolta AF |