Panasonic Leica DG 25mm f/1.4 II vs Panasonic Leica DG 42.5mm f/1.2

Both are Micro Four Thirds mount primes for low-light — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.

Last verified 2026-06-21 · Micro Four Thirds mount · prices change — check the retailer

Spec	Panasonic Leica DG 25mm f/1.4 II	Panasonic Leica DG 42.5mm f/1.2
Focal length	25mm	42.5mm
Max aperture	f/1.4	f/1.2
Type	prime	prime
Coverage	Micro Four Thirds	Micro Four Thirds
Mount	Micro Four Thirds	Micro Four Thirds

Which should you buy?

• the Panasonic Leica DG 42.5mm f/1.2 opens wider (f/1.2) — brighter in low light and more background blur
• the Panasonic Leica DG 25mm f/1.4 II (25mm) is wider — more in the frame for street and interiors; the Panasonic Leica DG 42.5mm f/1.2 (42.5mm) is tighter — more reach and compression for portraits
• the Panasonic Leica DG 42.5mm f/1.2 covers Micro Four Thirds (also works on APS-C bodies); the Panasonic Leica DG 25mm f/1.4 II is Micro Four Thirds-only — it won't fill a full-frame sensor

Where to buy

Check the Panasonic Leica DG 25mm f/1.4 II price on Amazon →

Check the Panasonic Leica DG 42.5mm f/1.2 price on Amazon →

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FAQ

What's the difference between the Panasonic Leica DG 25mm f/1.4 II and the Panasonic Leica DG 42.5mm f/1.2?
The Panasonic Leica DG 25mm f/1.4 II is 25mm f/1.4 prime, Micro Four Thirds; the Panasonic Leica DG 42.5mm f/1.2 is 42.5mm f/1.2 prime, Micro Four Thirds. Both fit the Micro Four Thirds mount.

Which is better in low light, the Panasonic Leica DG 25mm f/1.4 II or the Panasonic Leica DG 42.5mm f/1.2?
The Panasonic Leica DG 42.5mm f/1.2 — 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 Leica DG 25mm f/1.4 II and Panasonic Leica DG 42.5mm f/1.2 fit the same camera?
Yes — both are Micro Four Thirds mount lenses, so they fit OM System (Olympus) and Panasonic Lumix G Micro Four Thirds bodies. Note the Panasonic Leica DG 25mm f/1.4 II is Micro Four Thirds-only and won't fill a full-frame sensor.

More Micro Four Thirds comparisons: OM System M.Zuiko 100-400mm f/5-6.3 IS vs Panasonic Lumix G 100-300mm f/4-5.6 II · OM System M.Zuiko 17mm f/1.8 vs Panasonic Leica DG 15mm f/1.7 · Olympus M.Zuiko 45mm f/1.8 vs OM System M.Zuiko 75mm f/1.8 · Panasonic Lumix G 20mm f/1.7 II vs Panasonic Leica DG 15mm f/1.7 · all Micro Four Thirds lenses · all comparisons