The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 60-600mm F4.5-6.3 DG OS HSM S and the Sigma 50-100mm F1.8 A 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 60-600mm F4.5-6.3 DG OS HSM S is the longer of the two lenses at 269mm. The Sigma 50-100mm F1.8 A with a length of 171mm, is 98mm shorter. Besides being longer, the Sigma 60-600mm F4.5-6.3 DG OS HSM S also has a larger diameter of 120mm compared to the Sigma 50-100mm F1.8 A's 94mm 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 50-100mm F1.8 A weighs 1490g, 44% (1210g) lighter than the Sigma 60-600mm F4.5-6.3 DG OS HSM S's weight of 2700g.
Filter Threads
The Sigma 60-600mm F4.5-6.3 DG OS HSM S has a filter size of 105mm whereas the Sigma 50-100mm F1.8 A has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 105mm filters that we recommend you to consider for the Sigma 60-600mm F4.5-6.3 DG OS HSM S:
And these are the 82mm filters that we recommend for the Sigma 50-100mm F1.8 A:
Lens Mounts
Both the Sigma 60-600mm F4.5-6.3 DG OS HSM S and the Sigma 50-100mm F1.8 A 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 60-600mm F4.5-6.3 DG OS HSM S is also available in Canon EF and Nikon F (FX) mounts.
Sigma 50-100mm F1.8 A is also available in Canon EF and Nikon F (DX) mounts.
Focal Range
Sigma 60-600mm F4.5-6.3 DG OS HSM S has a focal range of 60-600mm and
10.0X zoom ratio .
On the other hand, the Sigma 50-100mm F1.8 A has a focal range of 50-100mm and 2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 75-150mm when used on a APS-C / DX format camera.