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)

Check the Panasonic Lumix S PRO 70-200mm f/4 OIS price on Amazon →

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Check the Sigma 100-400mm f/5-6.3 DG DN OS price on Amazon → We could not find this one on Amazon US in L-Mount — 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 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 50mm f/1.4 vs Sigma 50mm f/1.4 DG DN Art · Sigma 28-45mm f/1.8 DG DN Art vs Sigma 17-40mm f/1.8 DC Art · Panasonic Lumix S 18mm f/1.8 vs Sigma 24mm f/1.4 DG DN Art · Sigma 30mm f/1.4 DC DN Contemporary vs 7Artisans AF 35mm f/1.8 · all L-Mount lenses · all comparisons

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