The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic S 50mm F1.8 and the Leica APO-SL 75mm F2 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 75mm F2 ASPH is the longer of the two lenses at 102mm. The Panasonic S 50mm F1.8 with a length of 82mm, is 20mm shorter. On the other hand, the Panasonic S 50mm F1.8 has a larger diameter of 74mm compared to the Leica APO-SL 75mm F2 ASPH's 73mm 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. Panasonic S 50mm F1.8 weighs 300g, which means it is 420g (58%) lighter than the Leica APO-SL 75mm F2 ASPH which has a weight of 720g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Leica L Mount for size comparison purposes.
Standard Lenses in Leica L Mount for Size Comparison
Filter Threads
Both the Panasonic S 50mm F1.8 and the Leica APO-SL 75mm F2 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
Both the Panasonic S 50mm F1.8 and the Leica APO-SL 75mm F2 ASPH has the same Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3, Panasonic S5 II and Panasonic S5 II X.
Focal Range
Panasonic S 50mm F1.8 is a prime lens with fixed focal lenght of 50mm.
On the other hand, the Leica APO-SL 75mm F2 ASPH is a prime lens with fixed focal lenght of 75mm.