The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon 28-70mm f2.8 ED-IF and the Tamron 24-70mm F2.8 Di VC USD G2 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. Nikon 28-70mm f2.8 ED-IF is the longer of the two lenses at 122mm. The Tamron 24-70mm F2.8 Di VC USD G2 with a length of 111mm, is 11mm shorter. Besides being longer, the Nikon 28-70mm f2.8 ED-IF also has a larger diameter of 89mm compared to the Tamron 24-70mm F2.8 Di VC USD G2's 88mm 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 24-70mm F2.8 Di VC USD G2 weighs 905g, 3% (30g) lighter than the Nikon 28-70mm f2.8 ED-IF's weight of 935g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Nikon F (FX) Mount for size comparison purposes.
Standard Lenses in Nikon F (FX) Mount for Size Comparison
Filter Threads
The Nikon 28-70mm f2.8 ED-IF has a filter size of 77mm whereas the Tamron 24-70mm F2.8 Di VC USD G2 has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Nikon 28-70mm f2.8 ED-IF:
And these are the 82mm filters that we recommend for the Tamron 24-70mm F2.8 Di VC USD G2:
Lens Mounts
Both the Nikon 28-70mm f2.8 ED-IF and the Tamron 24-70mm F2.8 Di VC USD G2 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 24-70mm F2.8 Di VC USD G2 is also available in Canon EF mount.
Focal Range
Nikon 28-70mm f2.8 ED-IF has a focal range of 28-70mm 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
42 - 105mm.
On the other hand, the Tamron 24-70mm F2.8 Di VC USD G2 has a focal range of 24-70mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 36 - 105mm.