Panasonic Lumix S PRO 50mm f/1.4 vs Sigma 50mm f/1.2 DG DN Art

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

Last verified 2026-09-01 · L-Mount · prices change — check the retailer

Spec	Panasonic Lumix S PRO 50mm f/1.4	Sigma 50mm f/1.2 DG DN Art
Focal length	50mm	50mm
Max aperture	f/1.4	f/1.2
Type	prime	prime
Coverage	full-frame	full-frame
Mount	L-Mount	L-Mount

Which should you buy?

the Sigma 50mm f/1.2 DG DN Art opens wider (f/1.2) — brighter in low light and more background blur

Where to buy

Panasonic LUMIX S PRO 50mm F1.4 Lens, Full-Frame L Mount, LEICA Certified, Dust/Splash/Freeze-Resistant for Panasonic LU

Panasonic Lumix S PRO 50mm f/1.4See price on Amazon Amazon has no new-stock listing for this one right now — this button runs an Amazon search for it rather than opening a product page.

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Sigma 50mm f/1.2 DG DN ArtSee price on Amazon

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FAQ

What's the difference between the Panasonic Lumix S PRO 50mm f/1.4 and the Sigma 50mm f/1.2 DG DN Art?
The Panasonic Lumix S PRO 50mm f/1.4 is 50mm f/1.4 prime, full-frame; the Sigma 50mm f/1.2 DG DN Art is 50mm f/1.2 prime, full-frame. Both fit the L-Mount.

Which is better in low light, the Panasonic Lumix S PRO 50mm f/1.4 or the Sigma 50mm f/1.2 DG DN Art?
The Sigma 50mm f/1.2 DG DN Art — its f/1.2 maximum aperture lets in more light and gives more background blur than the f/1.4 of the other.

Do the Panasonic Lumix S PRO 50mm f/1.4 and Sigma 50mm f/1.2 DG DN Art fit the same camera?
Yes — both are L-Mount lenses, so they fit Panasonic Lumix S, Leica SL, and Sigma fp full-frame bodies (the L-Mount Alliance).

Citing these specs? Go ahead — manufacturer data, last verified 2026-09-01. Copy a ready-made reference:

More L-Mount comparisons: Panasonic Lumix S 24-105mm f/4 Macro OIS vs Panasonic Lumix S PRO 24-70mm f/2.8 · Panasonic Lumix S 24-105mm f/4 Macro OIS vs Sigma 28-70mm f/2.8 DG DN Contemporary · Panasonic Lumix S PRO 70-200mm f/2.8 OIS vs Panasonic Lumix S PRO 70-200mm f/4 OIS · Panasonic Lumix S PRO 70-200mm f/4 OIS vs Sigma 100-400mm f/5-6.3 DG DN OS · all L-Mount lenses · all comparisons

Sigma 50mm f/1.2 DG DN ArtAffiliate linkSee price on Amazon