The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon EF 70-200 F2.8L IS III USM and the Tamron 70-200mm f2.8 LD for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Canon EF 70-200 F2.8L IS III USM is the longer of the two lenses at 199mm. The Tamron 70-200mm f2.8 LD with a length of 194mm is 5mm shorter. On the other hand, the Tamron 70-200mm f2.8 LD has a larger diameter of 90mm compared to Canon EF 70-200 F2.8L IS III USM's 89mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Tamron 70-200mm f2.8 LD weighs 1330g, 7% (110g) lighter than the Canon EF 70-200 F2.8L IS III USM's weight of 1440g.
Below you can find the dimension and weight table of the 'Telephoto Zoom Lenses in Canon EF Mount for size comparison purposes.
Telephoto Zoom Lenses in Canon EF Mount for Size Comparison
Lens Mounts
Both Canon EF 70-200 F2.8L IS III USM and Tamron 70-200mm f2.8 LD 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 70-200mm f2.8 LD is also available in Nikon F (FX) , Sony Alpha and Pentax KAF mounts.
Focal Range
Both lenses have the same focal range of 70-200mm and the fastest aperture of F2.8.