OM System M.Zuiko 100-400mm f/5-6.3 IS II vs Panasonic Leica DG 50-200mm f/2.8-4

Both are Micro Four Thirds mount zooms for sports & action and telephoto — 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 100-400mm f/5-6.3 IS II	Panasonic Leica DG 50-200mm f/2.8-4
Focal length	100-400mm	50-200mm
Max aperture	f/5-6.3	f/2.8-4
Type	zoom	zoom
Coverage	Micro Four Thirds	Micro Four Thirds
Mount	Micro Four Thirds	Micro Four Thirds

Which should you buy?

the Panasonic Leica DG 50-200mm f/2.8-4 opens wider (f/2.8-4) — brighter in low light and more background blur
the OM System M.Zuiko 100-400mm f/5-6.3 IS II covers 100-400mm and the Panasonic Leica DG 50-200mm f/2.8-4 covers 50-200mm — pick the range that matches what you shoot

Where to buy

OM SYSTEM M.Zuiko Digital ED 100-400mm F5.0-6.3 is II Compact Tripod Mount Design Lens with 5-Axis Sync-is (Micro Four T

OM System M.Zuiko 100-400mm f/5-6.3 IS IISee price on Amazon

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Panasonic LUMIX Professional 50-200mm Camera Lens, G Leica DG Vario-ELMARIT, F2.8-4.0 ASPH, Dual I.S. 2.0 with Power O.I

Panasonic Leica DG 50-200mm f/2.8-4See price on Amazon

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FAQ

What's the difference between the OM System M.Zuiko 100-400mm f/5-6.3 IS II and the Panasonic Leica DG 50-200mm f/2.8-4?
The OM System M.Zuiko 100-400mm f/5-6.3 IS II is 100-400mm f/5-6.3 zoom, Micro Four Thirds; the Panasonic Leica DG 50-200mm f/2.8-4 is 50-200mm f/2.8-4 zoom, Micro Four Thirds. Both fit the Micro Four Thirds mount.

Which is better in low light, the OM System M.Zuiko 100-400mm f/5-6.3 IS II or the Panasonic Leica DG 50-200mm f/2.8-4?
The Panasonic Leica DG 50-200mm f/2.8-4 — its f/2.8-4 maximum aperture lets in more light and gives more background blur than the f/5-6.3 of the other.

Do the OM System M.Zuiko 100-400mm f/5-6.3 IS II and Panasonic Leica DG 50-200mm f/2.8-4 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 17mm f/1.8 vs OM System M.Zuiko 20mm f/1.4 PRO · Olympus M.Zuiko 25mm f/1.8 vs OM System M.Zuiko 20mm f/1.4 PRO · OM System M.Zuiko 12-100mm f/4 PRO vs OM System M.Zuiko 12-40mm f/2.8 PRO II · OM System M.Zuiko 12-100mm f/4 PRO vs Panasonic Leica DG 12-60mm f/2.8-4 · all Micro Four Thirds lenses · all comparisons

OM System M.Zuiko 100-400mm f/5-6.3 IS IIAffiliate linkSee price on Amazon