The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7artisans 50mm F1.1 and the Leica Noctilux-M 75mm F1.25 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 75mm F1.25 ASPH is the longer of the two lenses at 91mm. The 7artisans 50mm F1.1 with a length of 49mm, is 42mm shorter. Besides being longer, the Leica Noctilux-M 75mm F1.25 ASPH also has a larger diameter of 74mm compared to the 7artisans 50mm F1.1's 60mm 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. 7artisans 50mm F1.1 weighs 400g, which means it is 655g (62%) lighter than the Leica Noctilux-M 75mm F1.25 ASPH which has a weight of 1055g.
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
The 7artisans 50mm F1.1 has a filter size of 55mm whereas the Leica Noctilux-M 75mm F1.25 ASPH has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the 7artisans 50mm F1.1:
And these are the 67mm filters that we recommend for the Leica Noctilux-M 75mm F1.25 ASPH:
Both the 7artisans 50mm F1.1 and the Leica Noctilux-M 75mm F1.25 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.
7artisans 50mm F1.1 is a prime lens with fixed focal lenght of 50mm.
On the other hand, the Leica Noctilux-M 75mm F1.25 ASPH is a prime lens with fixed focal lenght of 75mm.