The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Thypoch 35mm F1.4 M and the Voigtlander 21mm F1.8 Ultron 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. Voigtlander 21mm F1.8 Ultron is the longer of the two lenses at 92mm. The Thypoch 35mm F1.4 M with a length of 65mm, is 27mm shorter. Besides being longer, the Voigtlander 21mm F1.8 Ultron also has a larger diameter of 62mm compared to the Thypoch 35mm F1.4 M'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 35mm F1.4 M weighs 352g, which means it is 60g (14%) lighter than the Voigtlander 21mm F1.8 Ultron which has a weight of 412g.
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 Thypoch 35mm F1.4 M has a filter size of 49mm whereas the Voigtlander 21mm F1.8 Ultron has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Thypoch 35mm F1.4 M:
And these are the 58mm filters that we recommend for the Voigtlander 21mm F1.8 Ultron:
Lens Mounts
Both the Thypoch 35mm F1.4 M and the Voigtlander 21mm F1.8 Ultron 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 35mm F1.4 M is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5mm.
On the other hand, the Voigtlander 21mm F1.8 Ultron is a prime lens with fixed focal lenght of 21mm.