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 EX 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 EX DG OS HSM is the longer of the two lenses at 289mm. The Sigma 120-300mm F2.8 EX DG HSM with a length of 271mm, is 18mm shorter. Besides being longer, the Sigma 120-300mm F2.8 EX DG OS HSM also has a larger diameter of 114mm 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 EX DG OS HSM which has a weight of 2950g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Nikon F (FX) Mount for size comparison purposes.
Telephoto Lenses in Nikon F (FX) Mount for Size Comparison
Filter Threads
Both the Sigma 120-300mm F2.8 EX DG HSM and the Sigma 120-300mm F2.8 EX 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 EX DG OS HSM has the same Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6, Nikon D780 and Nikon D3500.
Sigma 120-300mm F2.8 EX DG HSM is also available in Canon EF and Sigma SA mounts.
Sigma 120-300mm F2.8 EX DG OS HSM is also available in Canon EF mount.
Focal Range
Both lenses have the same focal range of
120-300mm and the fastest aperture of
F2.8.