The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 10-18mm F2.8 DC DN C and the Tamron 11-20mm F2.8 A 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 A is the longer of the two lenses at 86mm. The Sigma 10-18mm F2.8 DC DN C with a length of 64mm, is 22mm shorter. Besides being longer, the Tamron 11-20mm F2.8 A 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 Sigma 10-18mm F2.8 DC DN C and Tamron 11-20mm F2.8 A to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 10-18mm F2.8 DC DN C and the Tamron 11-20mm F2.8 A 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, which means it is 85g (25%) lighter than the Tamron 11-20mm F2.8 A which has a weight of 335g.
Filter Threads
Both the Sigma 10-18mm F2.8 DC DN C and the Tamron 11-20mm F2.8 A 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 Sigma 10-18mm F2.8 DC DN C has the Fujifilm X lens mount whereas the Tamron 11-20mm F2.8 A has the Sony E lens mount . Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Sony ZV-E10 II , Sony A6700 and Sony FX30 for the Sony E Mount.
Sony E , Leica L and Canon RF mounts.
Focal Range
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.
On the other hand, the Tamron 11-20mm F2.8 A 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.
