The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 28-75mm F2.8 Di III and the Tamron 17-35mm f2.8-4 LD 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. Tamron 28-75mm F2.8 Di III is the longer of the two lenses at 118mm. The Tamron 17-35mm f2.8-4 LD with a length of 87mm, is 31mm shorter. On the other hand, the Tamron 17-35mm f2.8-4 LD has a larger diameter of 83mm compared to the Tamron 28-75mm F2.8 Di III'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 17-35mm f2.8-4 LD weighs 440g, 18% (100g) lighter than the Tamron 28-75mm F2.8 Di III's weight of 540g.
Filter Threads
The Tamron 28-75mm F2.8 Di III has a filter size of 67mm whereas the Tamron 17-35mm f2.8-4 LD has a 77mm 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 28-75mm F2.8 Di III:
And these are the 77mm filters that we recommend for the Tamron 17-35mm f2.8-4 LD:
Lens Mounts
The Tamron 28-75mm F2.8 Di III has the Nikon Z lens mount whereas the Tamron 17-35mm f2.8-4 LD has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Tamron 28-75mm F2.8 Di III is also available in the Sony E and Sony E mounts.
Tamron 17-35mm f2.8-4 LD is also available in Canon EF mount.
Focal Range
Tamron 28-75mm F2.8 Di III has a focal range of 28-75mm and
2.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42 - 112.5mm.
On the other hand, the Tamron 17-35mm f2.8-4 LD has a focal range of 17-35mm and 2.1X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 25.5 - 52.5mm.
