The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 70-200mm f2.8 LD and the Sigma 70-200mm 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 70-200mm F2.8 EX DG OS HSM is the longer of the two lenses at 197mm. The Tamron 70-200mm f2.8 LD with a length of 194mm, is 3mm shorter. On the other hand, the Tamron 70-200mm f2.8 LD has a larger diameter of 90mm compared to the Sigma 70-200mm F2.8 EX 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. Tamron 70-200mm f2.8 LD weighs 1330g, which means it is 100g (6%) lighter than the Sigma 70-200mm F2.8 EX DG OS HSM which has a weight of 1430g.
Filter Threads
Both the Tamron 70-200mm f2.8 LD and the Sigma 70-200mm F2.8 EX DG 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 Tamron 70-200mm f2.8 LD has the Pentax KAF lens mount whereas the Sigma 70-200mm F2.8 EX DG OS HSM has the Pentax KAF3 lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF3 Mount.
Tamron 70-200mm f2.8 LD is also available in the Canon EF , Nikon F (FX) and Sony Alpha mounts.
Sigma 70-200mm F2.8 EX DG OS HSM is also available in Canon EF , Nikon F (FX), Sony Alpha and Sigma SA mounts.
Focal Range
Both lenses have the same focal range of
70-200mm and the fastest aperture of
F2.8.
