The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 70-210mm F4 Di VC USD and the Sigma 120-300mm F2.8 EX DG OS HSM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Sigma 120-300mm F2.8 EX DG OS HSM is the longer of the two lenses at 289mm. The Tamron 70-210mm F4 Di VC USD with a length of 175mm, is 114mm shorter. Besides being longer, the Sigma 120-300mm F2.8 EX DG OS HSM also has a larger diameter of 114mm compared to the Tamron 70-210mm F4 Di VC USD's 76mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Tamron 70-210mm F4 Di VC USD weighs 859g, which means it is 2091g (70%) lighter than the Sigma 120-300mm F2.8 EX DG OS HSM which has a weight of 2950g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Nikon F (FX) Mount for size comparison purposes.
Telephoto Lenses in Nikon F (FX) Mount for Size Comparison
Filter Threads
The Tamron 70-210mm F4 Di VC USD has a filter size of 67mm whereas the Sigma 120-300mm F2.8 EX DG OS HSM has a 105mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Tamron 70-210mm F4 Di VC USD:
And these are the 105mm filters that we recommend for the Sigma 120-300mm F2.8 EX DG OS HSM:
Lens Mounts
Both the Tamron 70-210mm F4 Di VC USD and the Sigma 120-300mm F2.8 EX 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 70-210mm F4 Di VC USD is also available in the Canon EF mount.
Sigma 120-300mm F2.8 EX DG OS HSM is also available in Canon EF mount.
Focal Range
Tamron 70-210mm F4 Di VC USD has a focal range of 70-210mm and
3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
105 - 315mm.
On the other hand, the Sigma 120-300mm F2.8 EX DG OS HSM has a focal range of 120-300mm and 2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 180 - 450mm.
