The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon EF 70-300 F4-5.6 IS II USM and the Tamron AF 28-300mm f3.5-6.3 XR VC 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. Canon EF 70-300 F4-5.6 IS II USM is the longer of the two lenses at 146mm. The Tamron AF 28-300mm f3.5-6.3 XR VC LD with a length of 78mm, is 68mm shorter. On the other hand, the Tamron AF 28-300mm f3.5-6.3 XR VC LD has a larger diameter of 99mm compared to the Canon EF 70-300 F4-5.6 IS II USM's 80mm 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 AF 28-300mm f3.5-6.3 XR VC LD weighs 555g, 21% (155g) lighter than the Canon EF 70-300 F4-5.6 IS II USM's weight of 710g.
Filter Threads
Both the Canon EF 70-300 F4-5.6 IS II USM and the Tamron AF 28-300mm f3.5-6.3 XR VC LD 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 Canon EF 70-300 F4-5.6 IS II USM and the Tamron AF 28-300mm f3.5-6.3 XR VC 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 AF 28-300mm f3.5-6.3 XR VC LD is also available in Nikon F (FX) mount.
Focal Range
Canon EF 70-300 F4-5.6 IS II 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.
On the other hand, the Tamron AF 28-300mm f3.5-6.3 XR VC LD 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.