The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica Summaron-M 28mm F5.6 and the Voigtlander 25mm F4 Color Skopar for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Voigtlander 25mm F4 Color Skopar is the longer of the two lenses at 30mm. The Leica Summaron-M 28mm F5.6 with a length of 18mm is 12mm shorter. Besides being longer, the Voigtlander 25mm F4 Color Skopar also has a larger diameter of 55mm compared to Leica Summaron-M 28mm F5.6's 51mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Voigtlander 25mm F4 Color Skopar weighs 156g, 5% (9g) lighter than the Leica Summaron-M 28mm F5.6's weight of 165g.
Below you can find the dimension and weight table of the 'Wideangle Prime Lenses in Leica M Mount for size comparison purposes.
Wideangle Prime Lenses in Leica M Mount for Size Comparison
Both Leica Summaron-M 28mm F5.6 and Voigtlander 25mm F4 Color Skopar has the same Leica M lens mount. Some of the latest released cameras that are compatible with the Leica M lenses are Leica M11, Leica M10 and Leica M Typ 262.
Leica Summaron-M 28mm F5.6 is a prime lens with fixed focal lenght of 28mm. Voigtlander 25mm F4 Color Skopar is a prime lens with fixed focal lenght of 25mm.