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 Leica Summicron-M 28mm f2 ASPH 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 Leica Summicron-M 28mm f2 ASPH with a length of 41mm, is 35mm shorter. Besides being longer, the Fujifilm XF 18mm F1.4 R LM WR also has a larger diameter of 69mm compared to the Leica Summicron-M 28mm f2 ASPH's 53mm 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. Leica Summicron-M 28mm f2 ASPH weighs 270g, 27% (100g) lighter than the Fujifilm XF 18mm F1.4 R LM WR's weight of 370g.
Filter Threads
The Fujifilm XF 18mm F1.4 R LM WR has a filter size of 62mm whereas the Leica Summicron-M 28mm f2 ASPH 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 62mm filters that we recommend you to consider for the Fujifilm XF 18mm F1.4 R LM WR:
And these are the 46mm filters that we recommend for the Leica Summicron-M 28mm f2 ASPH:
Lens Mounts
The Fujifilm XF 18mm F1.4 R LM WR has the Fujifilm X lens mount whereas the Leica Summicron-M 28mm f2 ASPH has the Leica M lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Leica M EV1, Leica M11-D and Pixii Max for the Leica M 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 Leica Summicron-M 28mm f2 ASPH is a prime lens with fixed focal lenght of 28mm.
