The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 11-20mm F2.8 RF 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. Tamron 11-20mm F2.8 RF is the longer of the two lenses at 84mm. The Sigma 10-18mm F2.8 DC DN C with a length of 64mm, is 20mm shorter. Besides being longer, the Tamron 11-20mm F2.8 RF also has a larger diameter of 73mm compared to the Sigma 10-18mm F2.8 DC DN C's 72mm diameter.
Below you can find a scaled side-by-side image of Tamron 11-20mm F2.8 RF 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 Tamron 11-20mm F2.8 RF 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. Sigma 10-18mm F2.8 DC DN C weighs 250g, 26% (90g) lighter than the Tamron 11-20mm F2.8 RF's weight of 340g.
Filter Threads
Both the Tamron 11-20mm F2.8 RF and the Sigma 10-18mm F2.8 DC DN C have the same Filter thread size of 67mm .
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Tamron 11-20mm F2.8 RF 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
Tamron 11-20mm F2.8 RF has a focal range of 11-20mm and
1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
17.6-32mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 10-18mm F2.8 DC DN C has a focal range of 10-18mm and 1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 15-27mm when used on a APS-C / DX format camera.
