FitMyLensthe lens-by-mount reference

Panasonic Lumix S 50mm f/1.8 vs Leica SL 50mm f/2 APO-Summicron

Both are L-Mount mount primes for standard prime — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.

Last verified 2026-06-21 · L-Mount mount · prices change — check the retailer

SpecPanasonic Lumix S 50mm f/1.8Leica SL 50mm f/2 APO-Summicron
Focal length50mm50mm
Max aperturef/1.8f/2
Typeprimeprime
Coveragefull-framefull-frame
MountL-MountL-Mount

Which should you buy?

Where to buy

Check the Panasonic Lumix S 50mm f/1.8 price on Amazon →

Check the Leica SL 50mm f/2 APO-Summicron price on Amazon →

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FAQ

What's the difference between the Panasonic Lumix S 50mm f/1.8 and the Leica SL 50mm f/2 APO-Summicron?
The Panasonic Lumix S 50mm f/1.8 is 50mm f/1.8 prime, full-frame; the Leica SL 50mm f/2 APO-Summicron is 50mm f/2 prime, full-frame. Both fit the L-Mount mount.

Which is better in low light, the Panasonic Lumix S 50mm f/1.8 or the Leica SL 50mm f/2 APO-Summicron?
The Panasonic Lumix S 50mm f/1.8 — its f/1.8 maximum aperture lets in more light and gives more background blur than the f/2 of the other.

Do the Panasonic Lumix S 50mm f/1.8 and Leica SL 50mm f/2 APO-Summicron fit the same camera?
Yes — both are L-Mount mount lenses, so they fit Panasonic Lumix S, Leica SL, and Sigma fp full-frame bodies (the L-Mount Alliance).

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