The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF-S 10-18mm F4.5-6.3 and the Tamron 10-24mm F3.5-4.5 Di II VC HLD 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 10-24mm F3.5-4.5 Di II VC HLD is the longer of the two lenses at 85mm. The Canon RF-S 10-18mm F4.5-6.3 with a length of 45mm, is 40mm shorter. Besides being longer, the Tamron 10-24mm F3.5-4.5 Di II VC HLD also has a larger diameter of 84mm compared to the Canon RF-S 10-18mm F4.5-6.3's 69mm diameter.
Below you can find a scaled side-by-side image of Canon RF-S 10-18mm F4.5-6.3 and Tamron 10-24mm F3.5-4.5 Di II VC HLD to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF-S 10-18mm F4.5-6.3 and the Tamron 10-24mm F3.5-4.5 Di II VC HLD Size and Weight 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 RF-S 10-18mm F4.5-6.3 weighs 150g, which means it is 290g (65%) lighter than the Tamron 10-24mm F3.5-4.5 Di II VC HLD which has a weight of 440g.
Filter Threads
The Canon RF-S 10-18mm F4.5-6.3 has a filter size of 49mm whereas the Tamron 10-24mm F3.5-4.5 Di II VC HLD has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Canon RF-S 10-18mm F4.5-6.3:
And these are the 77mm filters that we recommend for the Tamron 10-24mm F3.5-4.5 Di II VC HLD:
Lens Mounts
The Canon RF-S 10-18mm F4.5-6.3 has the Canon RF lens mount whereas the Tamron 10-24mm F3.5-4.5 Di II VC HLD has the Nikon F (DX) lens mount . Some of the latest released cameras that are compatible with these mounts are Canon R50 V , Canon R100 and Canon R50 for the Canon RF Mount and Nikon D3500 , Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Tamron 10-24mm F3.5-4.5 Di II VC HLD is also available in Canon EF-S mount.
Focal Range
Canon RF-S 10-18mm F4.5-6.3 has a focal range of 10-18mm and
1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
16-28.8mm when used on a APS-C / DX format camera.
On the other hand, the Tamron 10-24mm F3.5-4.5 Di II VC HLD has a focal range of 10-24mm and 2.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 15-36mm when used on a APS-C / DX format camera.