The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 120-300mm F2.8 EX DG HSM and the Sigma 120-300mm F2.8 DG OS HSM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Sigma 120-300mm F2.8 DG OS HSM is the longer of the two lenses at 291mm. The Sigma 120-300mm F2.8 EX DG HSM with a length of 271mm, is 20mm shorter. Besides being longer, the Sigma 120-300mm F2.8 DG OS HSM also has a larger diameter of 124mm compared to the Sigma 120-300mm F2.8 EX DG HSM's 113mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Sigma 120-300mm F2.8 EX DG HSM weighs 2600g, which means it is 350g (11%) lighter than the Sigma 120-300mm F2.8 DG OS HSM which has a weight of 2950g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Sigma SA Mount for size comparison purposes.
Telephoto Lenses in Sigma SA Mount for Size Comparison
Filter Threads
Both the Sigma 120-300mm F2.8 EX DG HSM and the Sigma 120-300mm F2.8 DG OS HSM have the same Filter thread size of 105mm.
Below are links to the 105mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sigma 120-300mm F2.8 EX DG HSM and the Sigma 120-300mm F2.8 DG OS HSM has the same Sigma SA lens mount. Some of the latest released cameras that are compatible with the Sigma SA lenses are Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill.
Sigma 120-300mm F2.8 EX DG HSM is also available in the Canon EF and Nikon F (FX) mounts.
Sigma 120-300mm F2.8 DG OS HSM is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of
120-300mm and the fastest aperture of
F2.8.
