The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica APO-Summicron-M 35mm F2 ASPH and the Fujifilm 23mm F2 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. Fujifilm 23mm F2 WR is the longer of the two lenses at 52mm. The Leica APO-Summicron-M 35mm F2 ASPH with a length of 41mm, is 11mm shorter. Besides being longer, the Fujifilm 23mm F2 WR also has a larger diameter of 60mm compared to the Leica APO-Summicron-M 35mm F2 ASPH's 53mm diameter.
Below you can find a scaled side-by-side image of Leica APO-Summicron-M 35mm F2 ASPH and Fujifilm 23mm F2 WR to get a better idea of how their sizes compare in real life.
Comparison image of the Leica APO-Summicron-M 35mm F2 ASPH and the Fujifilm 23mm F2 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 23mm F2 WR weighs 180g, 43% (140g) lighter than the Leica APO-Summicron-M 35mm F2 ASPH's weight of 320g.
Filter Threads
The Leica APO-Summicron-M 35mm F2 ASPH has a filter size of 39mm whereas the Fujifilm 23mm F2 WR has a 43mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 39mm filters that we recommend you to consider for the Leica APO-Summicron-M 35mm F2 ASPH:
And these are the 43mm filters that we recommend for the Fujifilm 23mm F2 WR:
Lens Mounts
The Leica APO-Summicron-M 35mm F2 ASPH has the Leica M lens mount whereas the Fujifilm 23mm F2 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 APO-Summicron-M 35mm F2 ASPH is a prime lens with fixed focal lenght of 35mm.
On the other hand, the Fujifilm 23mm F2 WR is a prime lens with fixed focal lenght of 23mm which has an effective (full-frame 35mm equivalent) focal range of 34.5mm when used on a APS-C / DX format camera.