The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Voigtlander 25mm F4 Color Skopar 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. Voigtlander 25mm F4 Color Skopar is the longer of the two lenses at 30mm. The Voigtlander 20mm F3.5 SL II with a length of 29mm, is 1mm shorter. On the other hand, the Voigtlander 20mm F3.5 SL II has a larger diameter of 63mm compared to the Voigtlander 25mm F4 Color Skopar's 55mm 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 25mm F4 Color Skopar weighs 156g, which means it is 49g (23%) lighter than the Voigtlander 20mm F3.5 SL II which has a weight of 205g.
Filter Threads
The Voigtlander 25mm F4 Color Skopar has a filter size of 39mm 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 39mm filters that we recommend you to consider for the Voigtlander 25mm F4 Color Skopar:
And these are the 52mm filters that we recommend for the Voigtlander 20mm F3.5 SL II:
Lens Mounts
The Voigtlander 25mm F4 Color Skopar has the Leica M lens mount whereas the Voigtlander 20mm F3.5 SL II has the Pentax KAF lens mount. Some of the latest released cameras that are compatible with these mounts are Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Voigtlander 20mm F3.5 SL II is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Voigtlander 25mm F4 Color Skopar is a prime lens with fixed focal lenght of 25mm.
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.
