The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 10-20mm F3.5 EX DC HSM and the Fujifilm XF 10-24mm F4 R 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 10-20mm F3.5 EX DC HSM is the longer of the two lenses at 88mm. The Fujifilm XF 10-24mm F4 R with a length of 87mm, is 1mm shorter. Besides being longer, the Sigma 10-20mm F3.5 EX DC HSM also has a larger diameter of 87mm compared to the Fujifilm XF 10-24mm F4 R's 78mm diameter.
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. Fujifilm XF 10-24mm F4 R weighs 410g, 21% (110g) lighter than the Sigma 10-20mm F3.5 EX DC HSM's weight of 520g.
Filter Threads
The Sigma 10-20mm F3.5 EX DC HSM has a filter size of 82mm whereas the Fujifilm XF 10-24mm F4 R has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Sigma 10-20mm F3.5 EX DC HSM:
And these are the 72mm filters that we recommend for the Fujifilm XF 10-24mm F4 R:
Lens Mounts
The Sigma 10-20mm F3.5 EX DC HSM has the Sigma SA lens mount whereas the Fujifilm XF 10-24mm F4 R has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are Sigma SD1 Merrill, Sigma SD1 and for the Sigma SA Mount and Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Sigma 10-20mm F3.5 EX DC HSM is also available in the Canon EF , Pentax KAF3, Sony Alpha and Nikon F (DX) mounts.
Focal Range
Sigma 10-20mm F3.5 EX DC HSM has a focal range of 10-20mm and
2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
15-30mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm XF 10-24mm F4 R 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.