Panasonic Lumix S 20-60mm f/3.5-5.6 vs Sigma 28-70mm f/2.8 DG DN Contemporary

Both are L-Mount zooms for everyday — 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 20-60mm f/3.5-5.6	Sigma 28-70mm f/2.8 DG DN Contemporary
Focal length	20-60mm	28-70mm
Max aperture	f/3.5-5.6	f/2.8
Type	zoom	zoom
Coverage	full-frame	full-frame
Mount	L-Mount	L-Mount

Which should you buy?

the Sigma 28-70mm f/2.8 DG DN Contemporary opens wider (f/2.8) — brighter in low light and more background blur
the Panasonic Lumix S 20-60mm f/3.5-5.6 covers 20-60mm and the Sigma 28-70mm f/2.8 DG DN Contemporary covers 28-70mm — pick the range that matches what you shoot

Where to buy

Panasonic LUMIX S 20-60mm F3.5-5.6 L Mount Interchangeable Lens for LUMIX S Series Mirrorless Full Frame Digital Cameras

Panasonic Lumix S 20-60mm f/3.5-5.6See price on Amazon

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Sigma 28-70mm f/2.8 DG DN ContemporarySee price on Amazon

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FAQ

What's the difference between the Panasonic Lumix S 20-60mm f/3.5-5.6 and the Sigma 28-70mm f/2.8 DG DN Contemporary?
The Panasonic Lumix S 20-60mm f/3.5-5.6 is 20-60mm f/3.5-5.6 zoom, full-frame; the Sigma 28-70mm f/2.8 DG DN Contemporary is 28-70mm f/2.8 zoom, full-frame. Both fit the L-Mount.

Which is better in low light, the Panasonic Lumix S 20-60mm f/3.5-5.6 or the Sigma 28-70mm f/2.8 DG DN Contemporary?
The Sigma 28-70mm f/2.8 DG DN Contemporary — its f/2.8 maximum aperture lets in more light and gives more background blur than the f/3.5-5.6 of the other.

Do the Panasonic Lumix S 20-60mm f/3.5-5.6 and Sigma 28-70mm f/2.8 DG DN Contemporary 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 24-105mm f/4 Macro OIS vs Sigma 28-70mm f/2.8 DG DN Contemporary · 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 24-105mm f/4 Macro OIS vs Panasonic Lumix S PRO 24-70mm f/2.8 · Panasonic Lumix S 35mm f/1.8 vs Sigma 65mm f/2 DG DN Contemporary · all L-Mount lenses · all comparisons

Panasonic Lumix S 20-60mm f/3.5-5.6Affiliate linkSee price on Amazon