The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Thypoch 28mm F1.4 X and the Voigtlander 20mm F3.5 SL II 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 28mm F1.4 X is the longer of the two lenses at 70mm. The Voigtlander 20mm F3.5 SL II with a length of 29mm, is 41mm shorter. On the other hand, the Voigtlander 20mm F3.5 SL II has a larger diameter of 63mm compared to the Thypoch 28mm F1.4 X's 54mm 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. Voigtlander 20mm F3.5 SL II weighs 205g, 40% (142g) lighter than the Thypoch 28mm F1.4 X's weight of 347g.
Filter Threads
The Thypoch 28mm F1.4 X has a filter size of 49mm whereas the Voigtlander 20mm F3.5 SL II has a 52mm 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 28mm F1.4 X:
And these are the 52mm filters that we recommend for the Voigtlander 20mm F3.5 SL II:
Lens Mounts
The Thypoch 28mm F1.4 X has the Fujifilm X lens mount whereas the Voigtlander 20mm F3.5 SL II has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Voigtlander 20mm F3.5 SL II is also available in Canon EF and Pentax KAF mounts.
Focal Range
Thypoch 28mm F1.4 X is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42mm.
On the other hand, the Voigtlander 20mm F3.5 SL II 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.