The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm XF 18mm F1.4 R LM WR and the Sigma 16mm F1.4 DC DN E 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 16mm F1.4 DC DN E is the longer of the two lenses at 92mm. The Fujifilm XF 18mm F1.4 R LM WR with a length of 76mm, is 16mm shorter. Besides being longer, the Sigma 16mm F1.4 DC DN E also has a larger diameter of 72mm compared to the Fujifilm XF 18mm F1.4 R LM WR's 69mm diameter.
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Below you can find a scaled side-by-side image of Fujifilm XF 18mm F1.4 R LM WR and Sigma 16mm F1.4 DC DN E 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 18mm F1.4 R LM WR weighs 370g, which means it is 35g (8%) lighter than the Sigma 16mm F1.4 DC DN E which has a weight of 405g.
Filter Threads
The Fujifilm XF 18mm F1.4 R LM WR has a filter size of 62mm whereas the Sigma 16mm F1.4 DC DN E 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 62mm filters that we recommend you to consider for the Fujifilm XF 18mm F1.4 R LM WR:
And these are the 67mm filters that we recommend for the Sigma 16mm F1.4 DC DN E:
Lens Mounts
The Fujifilm XF 18mm F1.4 R LM WR has the Fujifilm X lens mount whereas the Sigma 16mm F1.4 DC DN E has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-S20, Fujifilm X-T5 and Fujifilm X-H2 for the Fujifilm X Mount and Sony A6700, Sony FX30 and Sony ZV-E10 for the Sony E Mount.
Focal Range
Fujifilm XF 18mm F1.4 R LM WR is a prime lens with fixed focal lenght of 18mm which has an effective (full-frame 35mm equivalent) focal range of
27mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 16mm F1.4 DC DN E is a prime lens with fixed focal lenght of 16mm which has an effective (full-frame 35mm equivalent) focal range of 24mm when used on a APS-C / DX format camera.