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 Sigma 10-18mm F2.8 DC DN C 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. Sigma 10-18mm F2.8 DC DN C is the longer of the two lenses at 64mm. The Canon RF-S 10-18mm F4.5-6.3 with a length of 45mm, is 19mm shorter. Besides being longer, the Sigma 10-18mm F2.8 DC DN C also has a larger diameter of 72mm 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 Sigma 10-18mm F2.8 DC DN C 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 Sigma 10-18mm F2.8 DC DN C 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 100g (40%) lighter than the Sigma 10-18mm F2.8 DC DN C which has a weight of 250g.
Filter Threads
The Canon RF-S 10-18mm F4.5-6.3 has a filter size of 49mm whereas the Sigma 10-18mm F2.8 DC DN C 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 Sigma 10-18mm F2.8 DC DN C:
Lens Mounts
The Canon RF-S 10-18mm F4.5-6.3 has the Canon RF lens mount whereas the Sigma 10-18mm F2.8 DC DN C 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.
Sony E , Leica L and Canon RF mounts.
Focal Range
Both lenses have the same focal range of
10-18mm but while Canon RF-S 10-18mm F4.5-6.3 has the fastest aperture of
F4.5–6.3 , the Sigma 10-18mm F2.8 DC DN C's widest aperture value is
F2.8 .
