OM System M.Zuiko 17mm f/1.8 vs OM System M.Zuiko 20mm f/1.4 PRO

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

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

Spec	OM System M.Zuiko 17mm f/1.8	OM System M.Zuiko 20mm f/1.4 PRO
Focal length	17mm	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 17mm f/1.8 (17mm) is wider — more in the frame for street and interiors; the OM System M.Zuiko 20mm f/1.4 PRO (20mm) is tighter — more reach and compression for portraits

Where to buy

OM SYSTEM Olympus M.Zuiko Digital 17mm F1.8 II for Micro Four Thirds System Camera, Weather Proof, Compact Design, Beaut

OM System M.Zuiko 17mm f/1.8See price on Amazon

Amazon links are affiliate links — we may earn a commission at no extra cost to you.

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.

As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Affiliate links never affect our specs or which lenses we compare.

FAQ

What's the difference between the OM System M.Zuiko 17mm f/1.8 and the OM System M.Zuiko 20mm f/1.4 PRO?
The OM System M.Zuiko 17mm f/1.8 is 17mm 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 OM System M.Zuiko 17mm 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 OM System M.Zuiko 17mm 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: Olympus M.Zuiko 25mm f/1.8 vs OM System M.Zuiko 20mm f/1.4 PRO · Panasonic Leica DG 15mm f/1.7 vs OM System M.Zuiko 20mm f/1.4 PRO · OM System M.Zuiko 40-150mm f/2.8 PRO vs Panasonic Leica DG 100-400mm II · OM System M.Zuiko 40-150mm f/2.8 PRO vs Panasonic Lumix G 100-300mm f/4-5.6 II · all Micro Four Thirds lenses · all comparisons

OM System M.Zuiko 17mm f/1.8Affiliate linkSee price on Amazon