The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F1.4 C and the Fujifilm XF 50mm F2 R WR 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 30mm F1.4 C is the longer of the two lenses at 73mm. The Fujifilm XF 50mm F2 R WR with a length of 59mm, is 14mm shorter. Besides being longer, the Sigma 30mm F1.4 C also has a larger diameter of 65mm compared to the Fujifilm XF 50mm F2 R WR's 60mm diameter.
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Below you can find a scaled side-by-side image of Sigma 30mm F1.4 C and Fujifilm XF 50mm F2 R WR to get a better idea of how their sizes compare in real life.
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 50mm F2 R WR weighs 200g, 24% (65g) lighter than the Sigma 30mm F1.4 C's weight of 265g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Fujifilm X Mount for size comparison purposes.
Standard Lenses in Fujifilm X Mount for Size Comparison
Filter Threads
The Sigma 30mm F1.4 C has a filter size of 52mm whereas the Fujifilm XF 50mm F2 R WR has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Sigma 30mm F1.4 C:
And these are the 46mm filters that we recommend for the Fujifilm XF 50mm F2 R WR:
Lens Mounts
Both the Sigma 30mm F1.4 C and the Fujifilm XF 50mm F2 R 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-S20, Fujifilm X-T5 and Fujifilm X-H2.
Sigma 30mm F1.4 C is also available in Sony E , Micro Four Thirds and Nikon Z mounts.
Focal Range
Sigma 30mm F1.4 C is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of
45mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm XF 50mm F2 R WR is a prime lens with fixed focal lenght of 50mm which has an effective (full-frame 35mm equivalent) focal range of 75mm when used on a APS-C / DX format camera.