The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 150-600mm F5-6.3 Di VC USD G2 and the Sigma 150-600mm F5-6.3 DG OS HSM C for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sigma 150-600mm F5-6.3 DG OS HSM C is the longer of the two lenses at 260mm. The Tamron 150-600mm F5-6.3 Di VC USD G2 with a length of 258mm is 2mm shorter. On the other hand, the Tamron 150-600mm F5-6.3 Di VC USD G2 has a larger diameter of 106mm compared to Sigma 150-600mm F5-6.3 DG OS HSM C's 105mm diameter.
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 150-600mm F5-6.3 DG OS HSM C weighs 1930g, 3% (80g) lighter than the Tamron 150-600mm F5-6.3 Di VC USD G2's weight of 2010g.
Below you can find the dimension and weight table of the 'Telephoto Zoom Lenses in Sony Alpha Mount for size comparison purposes.
Telephoto Zoom Lenses in Sony Alpha Mount for Size Comparison
Lens Mounts
Both Tamron 150-600mm F5-6.3 Di VC USD G2 and Sigma 150-600mm F5-6.3 DG OS HSM C has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Tamron 150-600mm F5-6.3 Di VC USD G2 is also available in Nikon F (FX) and Canon EF mounts.
Sigma 150-600mm F5-6.3 DG OS HSM C is also available in Canon EF , Nikon F (FX) and Sigma SA mounts.
Focal Range
Both lenses have the same focal range of 150-600mm and the fastest aperture of F5-6.3.