The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm XC 13-33mm F3.5-6.3 OIS and the Sigma 17-40mm f1.8 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 17-40mm f1.8 is the longer of the two lenses at 116mm. The Fujifilm XC 13-33mm F3.5-6.3 OIS with a length of 38mm, is 78mm shorter. Besides being longer, the Sigma 17-40mm f1.8 also has a larger diameter of 73mm compared to the Fujifilm XC 13-33mm F3.5-6.3 OIS's 62mm 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 XC 13-33mm F3.5-6.3 OIS weighs 125g, which means it is 410g (76%) lighter than the Sigma 17-40mm f1.8 which has a weight of 535g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Fujifilm X Mount for size comparison purposes.
Standard Lenses in Fujifilm X Mount for Size Comparison
Filter Threads
The Fujifilm XC 13-33mm F3.5-6.3 OIS has a filter size of 49mm whereas the Sigma 17-40mm f1.8 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 Fujifilm XC 13-33mm F3.5-6.3 OIS:
And these are the 67mm filters that we recommend for the Sigma 17-40mm f1.8:
Lens Mounts
Both the Fujifilm XC 13-33mm F3.5-6.3 OIS and the Sigma 17-40mm f1.8 has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5.
Sigma 17-40mm f1.8 is also available in Sony E , Leica L and Canon RF mounts.
Focal Range
Fujifilm XC 13-33mm F3.5-6.3 OIS has a focal range of 13-33mm and
2.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
19.5-49.5mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 17-40mm f1.8 has a focal range of 17-40mm and 2.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 25.5-60mm when used on a APS-C / DX format camera.
