The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 56mm F1.4 C and the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ 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 15-45mm F3.5-5.6 OIS PZ with a length of 44mm, is 16mm shorter. Besides being longer, the Sigma 56mm F1.4 C also has a larger diameter of 67mm compared to the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ's 63mm 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 15-45mm F3.5-5.6 OIS PZ weighs 136g, 51% (144g) lighter than the Sigma 56mm F1.4 C's weight of 280g.
Filter Threads
The Sigma 56mm F1.4 C has a filter size of 55mm whereas the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sigma 56mm F1.4 C:
And these are the 52mm filters that we recommend for the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ:
Lens Mounts
Both the Sigma 56mm F1.4 C and the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ 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 the Nikon Z and Canon RF mounts.
Focal Range
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.
On the other hand, the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ has a focal range of 15-45mm and 3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 22.5-67.5mm when used on a APS-C / DX format camera.