The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 24-70mm F2.8 Di VC USD G2 and the Sigma 24-105mm F4 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. Tamron 24-70mm F2.8 Di VC USD G2 is the longer of the two lenses at 111mm. The Sigma 24-105mm F4 DG OS HSM with a length of 109mm, is 2mm shorter. On the other hand, the Sigma 24-105mm F4 DG OS HSM has a larger diameter of 89mm compared to the Tamron 24-70mm F2.8 Di VC USD G2's 88mm 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 24-105mm F4 DG OS HSM weighs 885g, 2% (20g) lighter than the Tamron 24-70mm F2.8 Di VC USD G2's weight of 905g.
Filter Threads
Both the Tamron 24-70mm F2.8 Di VC USD G2 and the Sigma 24-105mm F4 DG OS HSM have the same Filter thread size of 82mm.
Below are links to the 82mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Tamron 24-70mm F2.8 Di VC USD G2 has the Nikon F (FX) lens mount whereas the Sigma 24-105mm F4 DG OS HSM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Tamron 24-70mm F2.8 Di VC USD G2 is also available in the Canon EF mount.
Sigma 24-105mm F4 DG OS HSM is also available in Nikon F (FX) , Sony Alpha and Sigma SA mounts.
Focal Range
Tamron 24-70mm F2.8 Di VC USD G2 has a focal range of 24-70mm and
2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
36 - 105mm.
On the other hand, the Sigma 24-105mm F4 DG OS HSM has a focal range of 24-105mm and 4.4X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 38.4 - 168mm.
