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 24-70mm F2.8 DG OS HSM for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Tamron 24-70mm F2.8 Di VC USD G2 is the longer of the two lenses at 111mm. The Sigma 24-70mm F2.8 DG OS HSM with a length of 108mm is 3mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 88mm.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Tamron 24-70mm F2.8 Di VC USD G2 weighs 905g, which means it is 115g (11%) lighter than the Sigma 24-70mm F2.8 DG OS HSM which has a weight of 1020g.
Below you can find the dimension and weight table of the 'Standard Zoom Lenses in Nikon F (FX) Mount for size comparison purposes.
Standard Zoom Lenses in Nikon F (FX) Mount for Size Comparison
Both Tamron 24-70mm F2.8 Di VC USD G2 and Sigma 24-70mm F2.8 DG OS HSM has the same Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6, Nikon D780 and Nikon D3500.
Tamron 24-70mm F2.8 Di VC USD G2 is also available in Canon EF mount.
Sigma 24-70mm F2.8 DG OS HSM is also available in Sigma SA and Canon EF mounts.
Both lenses have the same focal range of 24-70mm and the fastest aperture of F2.8.