The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 24-35mm F2 DG HSM A and the Tamron 28-300mm f3.5-6.3 VC PZD 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 24-35mm F2 DG HSM A is the longer of the two lenses at 123mm. The Tamron 28-300mm f3.5-6.3 VC PZD with a length of 96mm, is 27mm shorter. Besides being longer, the Sigma 24-35mm F2 DG HSM A also has a larger diameter of 88mm compared to the Tamron 28-300mm f3.5-6.3 VC PZD's 74mm 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 28-300mm f3.5-6.3 VC PZD weighs 540g, 42% (401g) lighter than the Sigma 24-35mm F2 DG HSM A's weight of 941g.
Filter Threads
The Sigma 24-35mm F2 DG HSM A has a filter size of 82mm whereas the Tamron 28-300mm f3.5-6.3 VC PZD has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Sigma 24-35mm F2 DG HSM A:
And these are the 67mm filters that we recommend for the Tamron 28-300mm f3.5-6.3 VC PZD:
Lens Mounts
Both the Sigma 24-35mm F2 DG HSM A and the Tamron 28-300mm f3.5-6.3 VC PZD 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.
Sigma 24-35mm F2 DG HSM A is also available in Canon EF and Sigma SA mounts.
Tamron 28-300mm f3.5-6.3 VC PZD is also available in Canon EF and Sony Alpha mounts.
Focal Range
Sigma 24-35mm F2 DG HSM A has a focal range of 24-35mm and
1.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
36 - 52.5mm.
On the other hand, the Tamron 28-300mm f3.5-6.3 VC PZD has a focal range of 28-300mm and 10.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 450mm.