The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Voigtlander 50mm F1.5 and the Leica Noctilux-M 50mm f0.95 ASPH for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Leica Noctilux-M 50mm f0.95 ASPH is the longer of the two lenses at 75mm. The Voigtlander 50mm F1.5 with a length of 46mm, is 29mm shorter. Besides being longer, the Leica Noctilux-M 50mm f0.95 ASPH also has a larger diameter of 73mm compared to the Voigtlander 50mm F1.5's 54mm diameter.
The 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 50mm F1.5 weighs 293g, which means it is 407g (58%) lighter than the Leica Noctilux-M 50mm f0.95 ASPH which has a weight of 700g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Leica M Mount for size comparison purposes.
Standard Prime Lenses in Leica M Mount for Size Comparison
Both the Voigtlander 50mm F1.5 and the Leica Noctilux-M 50mm f0.95 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, Leica M10 and Leica M Typ 262.
Both lenses have the same focal range of 50mm but while Voigtlander 50mm F1.5 has the fastest aperture of F1.5, the Leica Noctilux-M 50mm f0.95 ASPH's widest aperture value is F0.95.