The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica APO-SL 75mm F2 ASPH and the Panasonic S 85mm F1.8 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 85mm F1.8 with a length of 82mm, is 20mm shorter. On the other hand, the Panasonic S 85mm 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 85mm F1.8 weighs 355g, 50% (365g) lighter than the Leica APO-SL 75mm F2 ASPH's weight of 720g.
Filter Threads
Both the Leica APO-SL 75mm F2 ASPH and the Panasonic S 85mm F1.8 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 Leica APO-SL 75mm F2 ASPH and the Panasonic S 85mm F1.8 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
Leica APO-SL 75mm F2 ASPH is a prime lens with fixed focal lenght of 75mm.
On the other hand, the Panasonic S 85mm F1.8 is a prime lens with fixed focal lenght of 85mm.