The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina Firin 20mm F2 FE MF and the Leica Super-Elmar-M 21mm f3.4 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. Tokina Firin 20mm F2 FE MF is the longer of the two lenses at 82mm. The Leica Super-Elmar-M 21mm f3.4 ASPH with a length of 43mm, is 39mm shorter. Besides being longer, the Tokina Firin 20mm F2 FE MF also has a larger diameter of 69mm compared to the Leica Super-Elmar-M 21mm f3.4 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 Super-Elmar-M 21mm f3.4 ASPH weighs 279g, 43% (211g) lighter than the Tokina Firin 20mm F2 FE MF's weight of 490g.
Filter Threads
The Tokina Firin 20mm F2 FE MF has a filter size of 62mm whereas the Leica Super-Elmar-M 21mm f3.4 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 Tokina Firin 20mm F2 FE MF:
And these are the 46mm filters that we recommend for the Leica Super-Elmar-M 21mm f3.4 ASPH:
Lens Mounts
The Tokina Firin 20mm F2 FE MF has the Sony E lens mount whereas the Leica Super-Elmar-M 21mm f3.4 ASPH has the Leica M lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount.
Tokina Firin 20mm F2 FE MF is also available in the Sony E mount.
Focal Range
Tokina Firin 20mm F2 FE MF is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
30mm.
On the other hand, the Leica Super-Elmar-M 21mm f3.4 ASPH is a prime lens with fixed focal lenght of 21mm.
