The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Voigtlander 21mm F1.8 Ultron and the Leica Summilux-M 21mm f1.4 Asph 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 Leica Summilux-M 21mm f1.4 Asph with a length of 66mm, is 26mm shorter. On the other hand, the Leica Summilux-M 21mm f1.4 Asph has a larger diameter of 70mm compared to the Voigtlander 21mm F1.8 Ultron's 62mm 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 21mm F1.8 Ultron weighs 412g, which means it is 168g (28%) lighter than the Leica Summilux-M 21mm f1.4 Asph which has a weight of 580g.
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
Lens Mounts
Both the Voigtlander 21mm F1.8 Ultron and the Leica Summilux-M 21mm f1.4 Asph has the same Leica M lens mount. Some of the latest released cameras that are compatible with the Leica M lenses are Leica M11 Monochrome, Leica M11 and Leica M10.
Focal Range
Both lenses have the same focal range of
21mm but while Voigtlander 21mm F1.8 Ultron has the fastest aperture of
F1.8, the Leica Summilux-M 21mm f1.4 Asph's widest aperture value is
F1.4.