Panasonic Lumix S 18mm f/1.8 vs Sigma 20mm f/1.4 DG DN Art
Both are L-Mount mount primes for wide-angle and astrophotography — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Panasonic Lumix S 18mm f/1.8 | Sigma 20mm f/1.4 DG DN Art |
|---|---|---|
| Focal length | 18mm | 20mm |
| Max aperture | f/1.8 | f/1.4 |
| Type | prime | prime |
| Coverage | full-frame | full-frame |
| Mount | L-Mount | L-Mount |
Which should you buy?
- the Sigma 20mm f/1.4 DG DN Art opens wider (f/1.4) — brighter in low light and more background blur
- the Panasonic Lumix S 18mm f/1.8 (18mm) is wider — more in the frame for street and interiors; the Sigma 20mm f/1.4 DG DN Art (20mm) is tighter — more reach and compression for portraits
Where to buy
Check the Panasonic Lumix S 18mm f/1.8 price on Amazon →
Check the Sigma 20mm f/1.4 DG DN Art price on Amazon →
FAQ
What's the difference between the Panasonic Lumix S 18mm f/1.8 and the Sigma 20mm f/1.4 DG DN Art?
The Panasonic Lumix S 18mm f/1.8 is 18mm f/1.8 prime, full-frame; the Sigma 20mm f/1.4 DG DN Art is 20mm f/1.4 prime, full-frame. Both fit the L-Mount mount.
Which is better in low light, the Panasonic Lumix S 18mm f/1.8 or the Sigma 20mm f/1.4 DG DN Art?
The Sigma 20mm f/1.4 DG DN Art — 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 Panasonic Lumix S 18mm f/1.8 and Sigma 20mm f/1.4 DG DN Art fit the same camera?
Yes — both are L-Mount mount lenses, so they fit Panasonic Lumix S, Leica SL, and Sigma fp full-frame bodies (the L-Mount Alliance).
More L-Mount comparisons: Panasonic Lumix S PRO 50mm f/1.4 vs Sigma 50mm f/1.4 DG DN Art · Panasonic Lumix S 18mm f/1.8 vs Sigma 24mm f/1.4 DG DN Art · Panasonic Lumix S PRO 50mm f/1.4 vs Sigma 85mm f/1.4 DG DN Art · Panasonic Lumix S PRO 70-200mm f/2.8 OIS vs Sigma 70-200mm f/2.8 DG DN OS Sports · all L-Mount lenses · all comparisons