The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 105mm F1.4 DG HSM and the Sigma 120-300mm F2.8 EX DG 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 HSM is the longer of the two lenses at 271mm. The Sigma 105mm F1.4 DG HSM with a length of 132mm, is 139mm shorter. On the other hand, the Sigma 105mm F1.4 DG HSM has a larger diameter of 116mm 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 105mm F1.4 DG HSM weighs 1645g, which means it is 955g (36%) lighter than the Sigma 120-300mm F2.8 EX DG HSM which has a weight of 2600g.
Filter Threads
Both the Sigma 105mm F1.4 DG HSM and the Sigma 120-300mm F2.8 EX DG 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 105mm F1.4 DG HSM and the Sigma 120-300mm F2.8 EX DG 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 105mm F1.4 DG HSM is also available in the Canon EF , Nikon F (FX) and Sony E mounts.
Sigma 120-300mm F2.8 EX DG HSM is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Sigma 105mm F1.4 DG HSM is a prime lens with fixed focal lenght of 105mm.
On the other hand, the Sigma 120-300mm F2.8 EX DG HSM has a focal range of 120-300mm and 2.5X zoom ratio .
