The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica APO-SL 50mm F2 ASPH 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 APO-SL 50mm F2 ASPH is the longer of the two lenses at 102mm. The Leica Noctilux-M 75mm F1.25 ASPH with a length of 91mm, is 11mm shorter. On the other hand, the Leica Noctilux-M 75mm F1.25 ASPH has a larger diameter of 74mm compared to the Leica APO-SL 50mm F2 ASPH's 73mm diameter.
Below you can find a scaled side-by-side image of Leica APO-SL 50mm F2 ASPH and Leica Noctilux-M 75mm F1.25 ASPH to get a better idea of how their sizes compare in real life.
Comparison image of the Leica APO-SL 50mm F2 ASPH and the Leica Noctilux-M 75mm F1.25 ASPH Size and Weight 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 APO-SL 50mm F2 ASPH weighs 740g, which means it is 315g (29%) lighter than the Leica Noctilux-M 75mm F1.25 ASPH which has a weight of 1055g.
Filter Threads
Both the Leica APO-SL 50mm F2 ASPH and the Leica Noctilux-M 75mm F1.25 ASPH have the same Filter thread size of 67mm .
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Leica APO-SL 50mm F2 ASPH has the Leica L lens mount whereas the Leica Noctilux-M 75mm F1.25 ASPH has the Leica M lens mount . Some of the latest released cameras that are compatible with these mounts are Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Leica M EV1 , Leica M11-D and Pixii Max for the Leica M Mount.
Focal Range
Leica APO-SL 50mm F2 ASPH 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.