The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 50-400mm F4.5-6.3 VC and the Tamron 100-400mm F4.5-6.3 Di VC USD 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 100-400mm F4.5-6.3 Di VC USD is the longer of the two lenses at 199mm. The Tamron 50-400mm F4.5-6.3 VC with a length of 186mm, is 13mm shorter. On the other hand, the Tamron 50-400mm F4.5-6.3 VC has a larger diameter of 89mm compared to the Tamron 100-400mm F4.5-6.3 Di VC USD's 86mm 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 100-400mm F4.5-6.3 Di VC USD weighs 1135g, 3% (45g) lighter than the Tamron 50-400mm F4.5-6.3 VC's weight of 1180g.
Filter Threads
Both the Tamron 50-400mm F4.5-6.3 VC and the Tamron 100-400mm F4.5-6.3 Di VC USD have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Tamron 50-400mm F4.5-6.3 VC has the Nikon Z lens mount whereas the Tamron 100-400mm F4.5-6.3 Di VC USD 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 50-400mm F4.5-6.3 VC is also available in the Sony E mount.
Tamron 100-400mm F4.5-6.3 Di VC USD is also available in Canon EF mount.
Focal Range
Tamron 50-400mm F4.5-6.3 VC has a focal range of 50-400mm and
8.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75 - 600mm.
On the other hand, the Tamron 100-400mm F4.5-6.3 Di VC USD has a focal range of 100-400mm 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 150 - 600mm.
