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 VC and the Sigma 70-300mm F4-5.6 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. Tamron 150-600mm f5-6.3 VC is the longer of the two lenses at 258mm. The Sigma 70-300mm F4-5.6 DG with a length of 122mm, is 136mm shorter. Besides being longer, the Tamron 150-600mm f5-6.3 VC also has a larger diameter of 106mm compared to the Sigma 70-300mm F4-5.6 DG's 77mm 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 70-300mm F4-5.6 DG weighs 550g, 71% (1401g) lighter than the Tamron 150-600mm f5-6.3 VC's weight of 1951g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Nikon F (FX) Mount for size comparison purposes.
Telephoto Zoom Lenses in Nikon F (FX) Mount for Size Comparison
Lens Mounts
Both the Tamron 150-600mm f5-6.3 VC and the Sigma 70-300mm F4-5.6 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 150-600mm f5-6.3 VC is also available in Canon EF and Sony Alpha mounts.
Sigma 70-300mm F4-5.6 DG is also available in Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha, Sigma SA, Canon EF, Pentax KAF, Sony Alpha and Sigma SA mounts.
Focal Range
Tamron 150-600mm f5-6.3 VC has a focal range of 150-600mm and 4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 225 - 900mm.
Sigma 70-300mm F4-5.6 DG has a focal range of 70-300mm and 4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 450mm.