The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica Noctilux-M 75mm F1.25 ASPH 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. Leica Noctilux-M 75mm F1.25 ASPH is the longer of the two lenses at 91mm. The Fujifilm XF 50mm F2 R WR with a length of 59mm, is 32mm shorter. Besides being longer, the Leica Noctilux-M 75mm F1.25 ASPH also has a larger diameter of 74mm compared to the Fujifilm XF 50mm F2 R WR's 60mm diameter.
Below you can find a scaled side-by-side image of Leica Noctilux-M 75mm F1.25 ASPH and Fujifilm XF 50mm F2 R WR to get a better idea of how their sizes compare in real life.
Comparison image of the Leica Noctilux-M 75mm F1.25 ASPH and the Fujifilm XF 50mm F2 R WR Size and Weight 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, 81% (855g) lighter than the Leica Noctilux-M 75mm F1.25 ASPH's weight of 1055g.
Filter Threads
The Leica Noctilux-M 75mm F1.25 ASPH has a filter size of 67mm 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 67mm filters that we recommend you to consider for the Leica Noctilux-M 75mm F1.25 ASPH:
And these are the 46mm filters that we recommend for the Fujifilm XF 50mm F2 R WR:
Lens Mounts
The Leica Noctilux-M 75mm F1.25 ASPH has the Leica M lens mount whereas the Fujifilm XF 50mm F2 R WR has the Fujifilm X lens mount . Some of the latest released cameras that are compatible with these mounts are Leica M EV1 , Leica M11-D and Pixii Max for the Leica M Mount and Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Focal Range
Leica Noctilux-M 75mm F1.25 ASPH is a prime lens with fixed focal lenght of 75mm.
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.