Olympus M.Zuiko 25mm f/1.8 vs OM System M.Zuiko 20mm f/1.4 PRO

Both are Micro Four Thirds mount primes for standard prime and everyday — 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	Olympus M.Zuiko 25mm f/1.8	OM System M.Zuiko 20mm f/1.4 PRO
Focal length	25mm	20mm
Max aperture	f/1.8	f/1.4
Type	prime	prime
Coverage	Micro Four Thirds	Micro Four Thirds
Mount	Micro Four Thirds	Micro Four Thirds

Which should you buy?

the OM System M.Zuiko 20mm f/1.4 PRO opens wider (f/1.4) — brighter in low light and more background blur
the OM System M.Zuiko 20mm f/1.4 PRO (20mm) is wider — more in the frame for street and interiors; the Olympus M.Zuiko 25mm f/1.8 (25mm) is tighter — more reach and compression for portraits

Where to buy

Olympus M.Zuiko Digital 25mm F1.8 Black for Micro Four Thirds System Camera, Compact Design, Beautiful Bokeh, Bright

Olympus M.Zuiko 25mm f/1.8See 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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OM System M.Zuiko 20mm f/1.4 PROSee price on Amazon We could not find this one on Amazon US in Micro Four Thirds — this button runs an Amazon search for it rather than opening a product page.

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FAQ

What's the difference between the Olympus M.Zuiko 25mm f/1.8 and the OM System M.Zuiko 20mm f/1.4 PRO?
The Olympus M.Zuiko 25mm f/1.8 is 25mm f/1.8 prime, Micro Four Thirds; the OM System M.Zuiko 20mm f/1.4 PRO is 20mm f/1.4 prime, Micro Four Thirds. Both fit the Micro Four Thirds mount.

Which is better in low light, the Olympus M.Zuiko 25mm f/1.8 or the OM System M.Zuiko 20mm f/1.4 PRO?
The OM System M.Zuiko 20mm f/1.4 PRO — its f/1.4 maximum aperture lets in more light and gives more background blur than the f/1.8 of the other.

Do the Olympus M.Zuiko 25mm f/1.8 and OM System M.Zuiko 20mm f/1.4 PRO 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.

Citing these specs? Go ahead — manufacturer data, last verified 2026-06-21. Copy a ready-made reference:

More Micro Four Thirds comparisons: Panasonic Leica DG 15mm f/1.7 vs OM System M.Zuiko 20mm f/1.4 PRO · OM System M.Zuiko 17mm f/1.8 vs Olympus M.Zuiko 25mm f/1.8 · Olympus M.Zuiko 45mm f/1.8 vs Panasonic Leica DG 42.5mm f/1.2 · Panasonic Leica DG 100-400mm II vs OM System M.Zuiko 150-600mm f/5-6.3 IS · all Micro Four Thirds lenses · all comparisons

Olympus M.Zuiko 25mm f/1.8Affiliate linkSee price on Amazon