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 XF 33mm F1.4 R LM WR for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Fujifilm XF 33mm F1.4 R LM WR is the longer of the two lenses at 74mm. The Sigma 56mm F1.4 C with a length of 60mm, is 14mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 67mm.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sigma 56mm F1.4 C weighs 280g, which means it is 80g (22%) lighter than the Fujifilm XF 33mm F1.4 R LM WR which has a weight of 360g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Fujifilm X Mount for size comparison purposes.
Standard Prime Lenses in Fujifilm X Mount for Size Comparison
Lens Mounts
Both the Sigma 56mm F1.4 C and the Fujifilm XF 33mm F1.4 R LM WR has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T5, Fujifilm X-H2 and Fujifilm X-H2S.
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. Fujifilm XF 33mm F1.4 R LM WR is a prime lens with fixed focal lenght of 33mm which has an effective (full-frame 35mm equivalent) focal range of 49.5mm when used on a APS-C / DX format camera.