| Sigma 100-300mm f/4 EX HSM Specifications | |
| Frame Coverage | 35mm |
| Lens Construction (groups) | 16 |
| Lens Construction (elements) | 14 |
| No. of Diaphragm Blades | 9 |
| Minimum Aperture | 32 |
| Closest Focusing Distance | 1.8m (70.9") |
| Maximum Magnifcation | 0.20x |
| Filter Diameter | 82mm |
| Maximum Diameter x Length | 92.4mm x 226.5mm (3.6" x 8.9") |
| Weight | 1440g (51oz) |
Reviews
Source
SLRGear.com
The 100-300mm ƒ/4 is an interesting lens, about as large as a 70-200mm ƒ/2.8, but offering slightly more reach. Unfortunately, the performance of this sample is on par, and sometimes bested by, the consumer telezooms of its competitors.
Photodo.com
The constant aperture and faster, quieter autofocusing make all the difference, ably helped by a constant length and internal focus mechanism to make handling a joy. Four SLD glass elements in the construction help to make a nice improvement to the output quality too.
