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 56mm F1.4 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 56mm F1.4 C is the longer of the two lenses at 60mm. The Fujifilm XC 13-33mm F3.5-6.3 OIS with a length of 38mm, is 22mm shorter. Besides being longer, the Sigma 56mm F1.4 C also has a larger diameter of 67mm 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 155g (55%) lighter than the Sigma 56mm F1.4 C which has a weight of 280g.
Filter Threads
The Fujifilm XC 13-33mm F3.5-6.3 OIS has a filter size of 49mm whereas the Sigma 56mm F1.4 C has a 55mm 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 55mm filters that we recommend for the Sigma 56mm F1.4 C:
Lens Mounts
Both the Fujifilm XC 13-33mm F3.5-6.3 OIS and the Sigma 56mm F1.4 C 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 56mm F1.4 C is also available in Nikon Z 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 56mm F1.4 C is a prime lens with fixed focal lenght of 56mm which has an effective (full-frame 35mm equivalent) focal range of 84mm when used on a APS-C / DX format camera.