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 11-20mm F2.8 X 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 11-20mm F2.8 X is the longer of the two lenses at 86mm. The Canon RF-S 10-18mm F4.5-6.3 with a length of 45mm, is 41mm shorter. Besides being longer, the Tamron 11-20mm F2.8 X also has a larger diameter of 73mm 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 11-20mm F2.8 X 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 11-20mm F2.8 X 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 185g (55%) lighter than the Tamron 11-20mm F2.8 X which has a weight of 335g.
Filter Threads
The Canon RF-S 10-18mm F4.5-6.3 has a filter size of 49mm whereas the Tamron 11-20mm F2.8 X has a 67mm 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 67mm filters that we recommend for the Tamron 11-20mm F2.8 X:
Lens Mounts
The Canon RF-S 10-18mm F4.5-6.3 has the Canon RF lens mount whereas the Tamron 11-20mm F2.8 X has the Fujifilm X 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 Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X 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 11-20mm F2.8 X has a focal range of 11-20mm and 1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 16.5-30mm when used on a APS-C / DX format camera.
