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 Fujifilm 27mm F2.8 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. Fujifilm XF 18mm F1.4 R LM WR is the longer of the two lenses at 76mm. The Fujifilm 27mm F2.8 with a length of 23mm, is 53mm shorter. Besides being longer, the Fujifilm XF 18mm F1.4 R LM WR also has a larger diameter of 69mm compared to the Fujifilm 27mm F2.8's 61mm 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 Fujifilm 27mm F2.8 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 27mm F2.8 weighs 78g, 78% (292g) lighter than the Fujifilm XF 18mm F1.4 R LM WR's weight of 370g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Fujifilm X Mount for size comparison purposes.
Wideangle Lenses in Fujifilm X Mount for Size Comparison
Filter Threads
The Fujifilm XF 18mm F1.4 R LM WR has a filter size of 62mm whereas the Fujifilm 27mm F2.8 has a 39mm 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 39mm filters that we recommend for the Fujifilm 27mm F2.8:
Lens Mounts
Both the Fujifilm XF 18mm F1.4 R LM WR and the Fujifilm 27mm F2.8 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.
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 Fujifilm 27mm F2.8 is a prime lens with fixed focal lenght of 27mm which has an effective (full-frame 35mm equivalent) focal range of 40.5mm when used on a APS-C / DX format camera.