The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 70-200 F2.8 DG OS HSM S and the Sigma 100-400mm F5-6.3 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 70-200 F2.8 DG OS HSM S is the longer of the two lenses at 203mm. The Sigma 100-400mm F5-6.3 DG OS HSM with a length of 182mm, is 21mm shorter. Besides being longer, the Sigma 70-200 F2.8 DG OS HSM S also has a larger diameter of 94mm compared to the Sigma 100-400mm F5-6.3 DG OS HSM's 86mm 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 100-400mm F5-6.3 DG OS HSM weighs 1160g, 35% (645g) lighter than the Sigma 70-200 F2.8 DG OS HSM S's weight of 1805g.
Filter Threads
The Sigma 70-200 F2.8 DG OS HSM S has a filter size of 82mm whereas the Sigma 100-400mm F5-6.3 DG OS HSM has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Sigma 70-200 F2.8 DG OS HSM S:
And these are the 67mm filters that we recommend for the Sigma 100-400mm F5-6.3 DG OS HSM:
Lens Mounts
Both the Sigma 70-200 F2.8 DG OS HSM S and the Sigma 100-400mm F5-6.3 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 70-200 F2.8 DG OS HSM S is also available in Canon EF and Nikon F (FX) mounts.
Sigma 100-400mm F5-6.3 DG OS HSM is also available in Nikon F (FX) and Canon EF mounts.
Focal Range
Sigma 70-200 F2.8 DG OS HSM S has a focal range of 70-200mm and
2.9X zoom ratio .
On the other hand, the Sigma 100-400mm F5-6.3 DG OS HSM has a focal range of 100-400mm and 4.0X zoom ratio .