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

Check the Olympus M.Zuiko 25mm f/1.8 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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Check the OM System M.Zuiko 20mm f/1.4 PRO 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: 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 100-400mm f/5-6.3 IS II 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 · OM System M.Zuiko 40-150mm f/2.8 PRO vs OM System M.Zuiko 150-600mm f/5-6.3 IS · all Micro Four Thirds lenses · all comparisons

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