The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 18-200mm F3.5-6.3 Di II VC and the Canon 18-200mm f3.5-5.6 IS for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Canon 18-200mm f3.5-5.6 IS is the longer of the two lenses at 102mm. The Tamron 18-200mm F3.5-6.3 Di II VC with a length of 97mm, is 5mm shorter. Besides being longer, the Canon 18-200mm f3.5-5.6 IS also has a larger diameter of 79mm compared to the Tamron 18-200mm F3.5-6.3 Di II VC's 75mm diameter.
The 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 18-200mm F3.5-6.3 Di II VC weighs 400g, which means it is 195g (32%) lighter than the Canon 18-200mm f3.5-5.6 IS which has a weight of 595g.
Lens Mounts
The Tamron 18-200mm F3.5-6.3 Di II VC has the Canon EF lens mount whereas the Canon 18-200mm f3.5-5.6 IS has the Canon EF-S lens mount. Some of the latest released cameras that are compatible with these mounts are Canon T8i, Canon 90D and Canon SL3 for the Canon EF Mount and Canon T8i, Canon 90D and Canon SL3 for the Canon EF-S Mount.
Tamron 18-200mm F3.5-6.3 Di II VC is also available in Nikon F (DX) and Sony Alpha mounts.
Focal Range
Both lenses have the same focal range of 18-200mm and the fastest aperture of F3.5 - F5.6.