The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Thypoch 21mm f3.5 and the Leica Summarit-M 35mm f2.5 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. Thypoch 21mm f3.5 is the longer of the two lenses at 35mm. The Leica Summarit-M 35mm f2.5 with a length of 34mm, is 1mm shorter. Besides being longer, the Thypoch 21mm f3.5 also has a larger diameter of 58mm compared to the Leica Summarit-M 35mm f2.5's 51mm 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. Thypoch 21mm f3.5 weighs 131g, which means it is 89g (40%) lighter than the Leica Summarit-M 35mm f2.5 which has a weight of 220g.
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
Both the Thypoch 21mm f3.5 and the Leica Summarit-M 35mm f2.5 have the same Filter thread size of 39mm.
Below are links to the 39mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Thypoch 21mm f3.5 and the Leica Summarit-M 35mm f2.5 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
Thypoch 21mm f3.5 is a prime lens with fixed focal lenght of 21mm.
On the other hand, the Leica Summarit-M 35mm f2.5 is a prime lens with fixed focal lenght of 25-35mm.
