The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica Super-Elmar-M 21mm f3.4 ASPH and the Leica Summicron-M 35mm 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. Leica Super-Elmar-M 21mm f3.4 ASPH is the longer of the two lenses at 43mm. The Leica Summicron-M 35mm f2 ASPH with a length of 35mm, is 8mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 53mm.
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 35mm f2 ASPH weighs 255g, 8% (24g) lighter than the Leica Super-Elmar-M 21mm f3.4 ASPH's weight of 279g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Leica M Mount for size comparison purposes.
Wideangle Lenses in Leica M Mount for Size Comparison
Filter Threads
The Leica Super-Elmar-M 21mm f3.4 ASPH has a filter size of 46mm whereas the Leica Summicron-M 35mm f2 ASPH 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 46mm filters that we recommend you to consider for the Leica Super-Elmar-M 21mm f3.4 ASPH:
And these are the 39mm filters that we recommend for the Leica Summicron-M 35mm f2 ASPH:
Lens Mounts
Both the Leica Super-Elmar-M 21mm f3.4 ASPH and the Leica Summicron-M 35mm f2 ASPH has the same Leica M lens mount. Some of the latest released cameras that are compatible with the Leica M lenses are Leica M EV1, Leica M11-D and Pixii Max.
Focal Range
Leica Super-Elmar-M 21mm f3.4 ASPH is a prime lens with fixed focal lenght of 21mm.
On the other hand, the Leica Summicron-M 35mm f2 ASPH is a prime lens with fixed focal lenght of 35mm.
