The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic S 50mm F1.4 and the Leica APO-SL 50mm 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. Panasonic S 50mm F1.4 is the longer of the two lenses at 130mm. The Leica APO-SL 50mm F2 ASPH with a length of 102mm, is 28mm shorter. Besides being longer, the Panasonic S 50mm F1.4 also has a larger diameter of 90mm compared to the Leica APO-SL 50mm F2 ASPH's 73mm diameter.
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Below you can find a scaled side-by-side image of Panasonic S 50mm F1.4 and Leica APO-SL 50mm F2 ASPH to get a better idea of how their sizes compare in real life.
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, 22% (215g) lighter than the Panasonic S 50mm F1.4's weight of 955g.
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
The Panasonic S 50mm F1.4 has a filter size of 77mm whereas the Leica APO-SL 50mm F2 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 77mm filters that we recommend you to consider for the Panasonic S 50mm F1.4:
And these are the 67mm filters that we recommend for the Leica APO-SL 50mm F2 ASPH:
Lens Mounts
Both the Panasonic S 50mm F1.4 and the Leica APO-SL 50mm 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
Both lenses have the same focal range of
50mm but while Panasonic S 50mm F1.4 has the fastest aperture of
F1.4, the Leica APO-SL 50mm F2 ASPH's widest aperture value is
F2.