The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 28-300mm f3.5-6.3 VC PZD and the Canon 70-300mm f4-5.6L IS 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. Canon 70-300mm f4-5.6L IS USM is the longer of the two lenses at 143mm. The Tamron 28-300mm f3.5-6.3 VC PZD with a length of 96mm, is 47mm shorter. Besides being longer, the Canon 70-300mm f4-5.6L IS USM also has a larger diameter of 89mm compared to the Tamron 28-300mm f3.5-6.3 VC PZD's 74mm 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 28-300mm f3.5-6.3 VC PZD weighs 540g, which means it is 510g (48%) lighter than the Canon 70-300mm f4-5.6L IS USM which has a weight of 1050g.
Filter Threads
Both the Tamron 28-300mm f3.5-6.3 VC PZD and the Canon 70-300mm f4-5.6L IS USM 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
Both the Tamron 28-300mm f3.5-6.3 VC PZD and the Canon 70-300mm f4-5.6L 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 28-300mm f3.5-6.3 VC PZD is also available in Nikon F (FX) and Sony Alpha mounts.
Focal Range
Tamron 28-300mm f3.5-6.3 VC PZD has a focal range of 28-300mm and
10.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
44.8 - 480mm.
On the other hand, the Canon 70-300mm f4-5.6L IS USM has a focal range of 70-300mm and 4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 112 - 480mm.