The Sigma 120-300mm f/2.8 EX DG OS APO HSM AF Lens (For Sigma) provides a large constant f/2.8 maximum aperture at all focal lengths. In essence, it transforms a large-aperture 300mm f/2.8 lens into a zoom lens that allows you to determine the picture composition without having to change your vantage point. Optical image stabilization facilitates hand-held photography by allowing you to shoot at shutter speeds 4 stops slower than without the stabilization.
The use of Apochromatic design, SLD and FLD glass elements for correction of chromatic aberrations, and super multi-layers to reduce flare and ghosting deliver superb image quality. The autofocus drive is equipped with the silent, responsive and high speed Hyper Sonic Motor and internal focusing for a highly functional professional lens. The DG design makes it fully optimized for use with digital SLR cameras.
| Performance | |
|---|---|
| Focal Length | 120 - 300 mm |
| Aperture |
Maximum: f/2.8 Minimum: f/22 |
| Camera Mount Type | Sigma SA |
| Format Compatibility |
35mm Film / Full-Frame Digital Sensor DSLR (APS-C Sensor) |
| Angle of View | 20.4° - 8.2° |
| Minimum Focus Distance | 4.9' (1.49 m) |
| Magnification | 0.12x |
| Maximum Reproduction Ratio | 1:8.1 |
| Groups/Elements | 18/23 |
| Diaphragm Blades | 9 |
| Features | |
|---|---|
| Image Stabilization | Yes |
| Autofocus | Yes |
| Tripod Collar | Yes |
| Physical | |
|---|---|
| Filter Thread | 105 mm |
| Dimensions (DxL) | Approx. 5.0 x 11.4" (12.70 x 28.96 cm) |
| Weight | 6.50 lb (2.95 kg) |