The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 150-600mm F5-6.3 DG OS HSM S 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 150-600mm F5-6.3 DG OS HSM S is the longer of the two lenses at 290mm. The Sigma 120-300mm F2.8 EX DG OS HSM with a length of 289mm, is 1mm shorter. Besides being longer, the Sigma 150-600mm F5-6.3 DG OS HSM S also has a larger diameter of 121mm compared to the Sigma 120-300mm F2.8 EX DG OS HSM's 114mm 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 150-600mm F5-6.3 DG OS HSM S weighs 2860g, which means it is 90g (3%) lighter than the Sigma 120-300mm F2.8 EX DG OS HSM which has a weight of 2950g.
Filter Threads
Both the Sigma 150-600mm F5-6.3 DG OS HSM S 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 150-600mm F5-6.3 DG OS HSM S 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 150-600mm F5-6.3 DG OS HSM S 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
Sigma 150-600mm F5-6.3 DG OS HSM S has a focal range of 150-600mm and
4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
225 - 900mm.
On the other hand, the Sigma 120-300mm F2.8 EX DG OS HSM has a focal range of 120-300mm and 2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 180 - 450mm.