The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron AF 70-300mm f4-5.6 LD and the Canon 70-300mm f4.5-5.6 DO IS USM for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Tamron AF 70-300mm f4-5.6 LD is the longer of the two lenses at 117mm. The Canon 70-300mm f4.5-5.6 DO IS USM with a length of 100mm is 17mm shorter. On the other hand, the Canon 70-300mm f4.5-5.6 DO IS USM has a larger diameter of 82mm compared to Tamron AF 70-300mm f4-5.6 LD's 77mm 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 AF 70-300mm f4-5.6 LD weighs 435g, which means it is 285g (39%) lighter than the Canon 70-300mm f4.5-5.6 DO IS USM which has a weight of 720g.
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
Both Tamron AF 70-300mm f4-5.6 LD and Canon 70-300mm f4.5-5.6 DO IS 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 AF 70-300mm f4-5.6 LD is also available in Nikon F (FX) , Sony Alpha and Pentax KAF mounts.