The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron SP 70-200mm 2.8 Di VC USD G2 and the Canon 100-400mm f4.5-5.6L IS II USM 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 SP 70-200mm 2.8 Di VC USD G2 is the longer of the two lenses at 194mm. The Canon 100-400mm f4.5-5.6L IS II USM with a length of 193mm, is 1mm shorter. On the other hand, the Canon 100-400mm f4.5-5.6L IS II USM has a larger diameter of 94mm compared to the Tamron SP 70-200mm 2.8 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 SP 70-200mm 2.8 Di VC USD G2 weighs 1500g, which means it is 90g (5%) lighter than the Canon 100-400mm f4.5-5.6L IS II USM which has a weight of 1590g.
Filter Threads
Both the Tamron SP 70-200mm 2.8 Di VC USD G2 and the Canon 100-400mm f4.5-5.6L IS II USM have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Tamron SP 70-200mm 2.8 Di VC USD G2 and the Canon 100-400mm f4.5-5.6L IS II USM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Tamron SP 70-200mm 2.8 Di VC USD G2 is also available in Nikon F (FX) mount.
Focal Range
Tamron SP 70-200mm 2.8 Di VC USD G2 has a focal range of 70-200mm and
2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
112 - 320mm.
On the other hand, the Canon 100-400mm f4.5-5.6L IS II USM has a focal range of 100-400mm and 4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 160 - 640mm.