Panasonic Lumix S PRO 70-200mm f/4 OIS vs Sigma 100-400mm f/5-6.3 DG DN OS

Both are L-Mount zooms for telephoto and sports & action — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.

Last verified 2026-09-01 · L-Mount · prices change — check the retailer

Spec	Panasonic Lumix S PRO 70-200mm f/4 OIS	Sigma 100-400mm f/5-6.3 DG DN OS
Focal length	70-200mm	100-400mm
Max aperture	f/4	f/5-6.3
Type	zoom	zoom
Coverage	full-frame	full-frame
Mount	L-Mount	L-Mount

Which should you buy?

the Panasonic Lumix S PRO 70-200mm f/4 OIS opens wider (f/4) — brighter in low light and more background blur
the Panasonic Lumix S PRO 70-200mm f/4 OIS covers 70-200mm and the Sigma 100-400mm f/5-6.3 DG DN OS covers 100-400mm — pick the range that matches what you shoot

Where to buy

Panasonic LUMIX S PRO 70-200mm F4 Telephoto Lens, Full-Frame L Mount (Black)

Panasonic Lumix S PRO 70-200mm f/4 OISSee price on Amazon

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Sigma 100-400mm F-5.6.3 DG DN OS for L Mount

Sigma 100-400mm f/5-6.3 DG DN OSSee price on Amazon

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 Panasonic Lumix S PRO 70-200mm f/4 OIS and the Sigma 100-400mm f/5-6.3 DG DN OS?
The Panasonic Lumix S PRO 70-200mm f/4 OIS is 70-200mm f/4 zoom, full-frame; the Sigma 100-400mm f/5-6.3 DG DN OS is 100-400mm f/5-6.3 zoom, full-frame. Both fit the L-Mount.

Which is better in low light, the Panasonic Lumix S PRO 70-200mm f/4 OIS or the Sigma 100-400mm f/5-6.3 DG DN OS?
The Panasonic Lumix S PRO 70-200mm f/4 OIS — its f/4 maximum aperture lets in more light and gives more background blur than the f/5-6.3 of the other.

Do the Panasonic Lumix S PRO 70-200mm f/4 OIS and Sigma 100-400mm f/5-6.3 DG DN OS fit the same camera?
Yes — both are L-Mount lenses, so they fit Panasonic Lumix S, Leica SL, and Sigma fp full-frame bodies (the L-Mount Alliance).

Citing these specs? Go ahead — manufacturer data, last verified 2026-09-01. Copy a ready-made reference:

More L-Mount comparisons: Panasonic Lumix S PRO 70-200mm f/2.8 OIS vs Panasonic Lumix S 28-200mm f/4-7.1 Macro OIS · Panasonic Lumix S PRO 50mm f/1.4 vs Sigma 50mm f/1.4 DG DN Art · Panasonic Lumix S PRO 70-200mm f/4 OIS vs Sigma 70-200mm f/2.8 DG DN OS Sports · Panasonic Lumix S 28-200mm f/4-7.1 Macro OIS vs Sigma 16-300mm f/3.5-6.7 DC OS Contemporary · all L-Mount lenses · all comparisons

Panasonic Lumix S PRO 70-200mm f/4 OISAffiliate linkSee price on Amazon