| Sigma 120-300mm f/2.8 EX HSM Specifications | |
| Frame Coverage | 35mm |
| Lens Construction (groups) | 16 |
| Lens Construction (elements) | 18 |
| No. of Diaphragm Blades | 9 |
| Minimum Aperture | 32 |
| Closest Focusing Distance | 1.8m (70.9") |
| Maximum Magnifcation | 0.12x |
| Filter Diameter | 105mm |
| Maximum Diameter x Length | 112.8mm x 271mm (4.4" x 10.7") |
| Weight | 2600g (91.7oz) |
Reviews
Source
Popular Photography
Test slides were very sharp and contrasty from center to corners at every aperture at every focal length, except for the center and corners at f/32 at 200mm and 300mm, where diffraction produced slightly soft images. Light falloff was gone by f/4 at every focal length.
Photodo.com
In our tests we found the contrast throughout the zoom range is consistently good and it’s virtually as sharp wide open as it is stopped down two or three apertures. There’s no visible degrading at the edges, even on 35mm.
Shutterbug.com
Unlike the big giant 300mm f/2.8 fixed lenses, this sleek, slick zoom lens had many uses, and worked like a champ. It’s easily hand holdable, and the included tripod collar makes tripod or monopod shooting a breeze. With 1.4x and 2x dedicated APO tele-converters available you immediately have a 240-600mm f/5.6 mega-zoom available.
The-Digital-Picture.com
The Sigma is close to the Canon 70-200 L IS in sharpness at overlapping focal lengths, but is not as sharp at 300mm as the very impressive Canon 300mm f/2.8 L IS. Of course, you need both Canons to cover the same focal length range as the Sigma.
