The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 100-400mm f4.5-5.6L IS II USM and the Tamron 200-500mm f5-6.3 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 200-500mm f5-6.3 LD is the longer of the two lenses at 227mm. The Canon 100-400mm f4.5-5.6L IS II USM with a length of 193mm, is 34mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 94mm.
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 200-500mm f5-6.3 LD weighs 1237g, 22% (353g) lighter than the Canon 100-400mm f4.5-5.6L IS II USM's weight of 1590g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Canon EF Mount for size comparison purposes.
Super Telephoto Lenses in Canon EF Mount for Size Comparison
Filter Threads
The Canon 100-400mm f4.5-5.6L IS II USM has a filter size of 77mm whereas the Tamron 200-500mm f5-6.3 LD has a 86mm 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 Canon 100-400mm f4.5-5.6L IS II USM:
And these are the 86mm filters that we recommend for the Tamron 200-500mm f5-6.3 LD:
Lens Mounts
Both the Canon 100-400mm f4.5-5.6L IS II USM and the Tamron 200-500mm f5-6.3 LD has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K.
Tamron 200-500mm f5-6.3 LD is also available in Nikon F (FX) and Sony Alpha mounts.
Focal Range
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.
On the other hand, the Tamron 200-500mm f5-6.3 LD has a focal range of 200-500mm and 2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 320 - 800mm.
