The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 17-50mm F2.8 EX DC OS HSM and the Sigma 17-50mm F2.8 EX DC OS HSM for their suitability to various photography scenarios:
Size and Weight Comparison
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.
Filter Threads
Both the Sigma 17-50mm F2.8 EX DC OS HSM and the Sigma 17-50mm F2.8 EX DC OS HSM have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sigma 17-50mm F2.8 EX DC OS HSM has the Sigma SA lens mount whereas the Sigma 17-50mm F2.8 EX DC OS HSM has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Sigma SD1 Merrill, Sigma SD1 and for the Sigma SA Mount and Sony A68, Sony A77 II and Sony A58 for the Sony Alpha Mount.
Sigma 17-50mm F2.8 EX DC OS HSM is also available in the Canon EF , Pentax KAF3, Sony Alpha and Nikon F (DX) mounts.
Sigma 17-50mm F2.8 EX DC OS HSM is also available in Canon EF , Pentax KAF3, Sigma SA and Nikon F (DX) mounts.
Focal Range
Both lenses have the same focal range of
17-50mm and the fastest aperture of
F2.8.
