The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 150-600mm F5-6.3 DG OS HSM C and the Tamron 150-600mm f5-6.3 VC 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 VC with a length of 258mm is 2mm shorter. On the other hand, the Tamron 150-600mm f5-6.3 VC 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, which means it is 21g (1%) lighter than the Tamron 150-600mm f5-6.3 VC which has a weight of 1951g.
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
Both Sigma 150-600mm F5-6.3 DG OS HSM C and Tamron 150-600mm f5-6.3 VC 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.
Sigma 150-600mm F5-6.3 DG OS HSM C is also available in Canon EF , Nikon F (FX) and Sigma SA mounts.
Tamron 150-600mm f5-6.3 VC is also available in Canon EF and Nikon F (FX) mounts.
Both lenses have the same focal range of 150-600mm and the fastest aperture of F5.0 - F6.3.