The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 150-500mm F5-6.3 DG OS HSM and the Sigma APO 180mm 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 150-500mm F5-6.3 DG OS HSM is the longer of the two lenses at 252mm. The Sigma APO 180mm F2.8 EX DG OS HSM with a length of 204mm, is 48mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 95mm.
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 APO 180mm F2.8 EX DG OS HSM weighs 1640g, 7% (140g) lighter than the Sigma 150-500mm F5-6.3 DG OS HSM's weight of 1780g.
Filter Threads
Both the Sigma 150-500mm F5-6.3 DG OS HSM and the Sigma APO 180mm F2.8 EX DG OS HSM have the same Filter thread size of 86mm.
Below are links to the 86mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sigma 150-500mm F5-6.3 DG OS HSM and the Sigma APO 180mm F2.8 EX 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 150-500mm F5-6.3 DG OS HSM is also available in Canon EF , Nikon F (FX), Pentax KAF3 and Sony Alpha mounts.
Sigma APO 180mm F2.8 EX DG OS HSM is also available in Canon EF , Nikon F (FX) and Sony Alpha mounts.
Focal Range
Sigma 150-500mm F5-6.3 DG OS HSM has a focal range of 150-500mm and
3.3X zoom ratio .
On the other hand, the Sigma APO 180mm F2.8 EX DG OS HSM is a prime lens with fixed focal lenght of 180mm.