The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica Summicron-M 50mm f2 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 a crucial factor to consider when comparing two lenses. Leica Noctilux-M 50mm f0.95 ASPH is the longer of the two lenses at 75mm. The Leica Summicron-M 50mm f2 with a length of 44mm, is 31mm shorter. Besides being longer, the Leica Noctilux-M 50mm f0.95 ASPH also has a larger diameter of 73mm compared to the Leica Summicron-M 50mm f2's 53mm 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. Leica Summicron-M 50mm f2 weighs 240g, which means it is 460g (65%) 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 Lenses in Leica M Mount for Size Comparison
Filter Threads
The Leica Summicron-M 50mm f2 has a filter size of 39mm whereas the Leica Noctilux-M 50mm f0.95 ASPH has a 60mm 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 Leica Summicron-M 50mm f2:
And these are the 60mm filters that we recommend for the Leica Noctilux-M 50mm f0.95 ASPH:
Lens Mounts
Both the Leica Summicron-M 50mm f2 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 M EV1, Leica M11-D and Pixii Max.
Focal Range
Both lenses have the same focal range of
50mm but while Leica Summicron-M 50mm f2 has the fastest aperture of
F2.0, the Leica Noctilux-M 50mm f0.95 ASPH's widest aperture value is
F0.95.
