The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 18-270mm f3.5-6.3 II VC PZD and the Canon 28-105mm f3.5-4.5 II 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. Tamron 18-270mm f3.5-6.3 II VC PZD is the longer of the two lenses at 88mm. The Canon 28-105mm f3.5-4.5 II with a length of 75mm, is 13mm shorter. Besides being longer, the Tamron 18-270mm f3.5-6.3 II VC PZD also has a larger diameter of 74mm compared to the Canon 28-105mm f3.5-4.5 II's 72mm 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. Canon 28-105mm f3.5-4.5 II weighs 375g, 16% (75g) lighter than the Tamron 18-270mm f3.5-6.3 II VC PZD's weight of 450g.
Filter Threads
The Tamron 18-270mm f3.5-6.3 II VC PZD has a filter size of 62mm whereas the Canon 28-105mm f3.5-4.5 II has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Tamron 18-270mm f3.5-6.3 II VC PZD:
And these are the 58mm filters that we recommend for the Canon 28-105mm f3.5-4.5 II:
Lens Mounts
The Tamron 18-270mm f3.5-6.3 II VC PZD has the Nikon F (DX) lens mount whereas the Canon 28-105mm f3.5-4.5 II has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Tamron 18-270mm f3.5-6.3 II VC PZD is also available in the Canon EF mount.
Focal Range
Tamron 18-270mm f3.5-6.3 II VC PZD has a focal range of 18-270mm and
15.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-405mm when used on a APS-C / DX format camera.
On the other hand, the Canon 28-105mm f3.5-4.5 II has a focal range of 28-105mm and 3.8X 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 - 168mm.
