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 EX DG for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Sigma 24-70mm F2.8 EX DG is the longer of the two lenses at 116mm. The Tamron 24-70mm F2.8 Di VC USD G2 with a length of 111mm, is 5mm shorter. Besides being longer, the Sigma 24-70mm F2.8 EX DG also 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 as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sigma 24-70mm F2.8 EX DG weighs 715g, 20% (190g) lighter than the Tamron 24-70mm F2.8 Di VC USD G2's weight of 905g.
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
Lens Mounts
Both the Tamron 24-70mm F2.8 Di VC USD G2 and the Sigma 24-70mm F2.8 EX DG 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 EX DG is also available in Canon EF , Pentax KAF, Sony Alpha and Sigma SA mounts.
Focal Range
Both lenses have the same focal range of 24-70mm and the fastest aperture of F2.8.