7Artisans AF 10mm f/2.5 (fisheye) vs Sigma 20mm f/2 DG Contemporary
Both are L-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 | 7Artisans AF 10mm f/2.5 (fisheye) | Sigma 20mm f/2 DG Contemporary |
|---|---|---|
| Focal length | 10mm | 20mm |
| Max aperture | f/2.5 | f/2 |
| Type | prime | prime |
| Coverage | full-frame | full-frame |
| Mount | L-Mount | L-Mount |
Which should you buy?
- the Sigma 20mm f/2 DG Contemporary opens wider (f/2) — brighter in low light and more background blur
- the 7Artisans AF 10mm f/2.5 (fisheye) (10mm) is wider — more in the frame for street and interiors; the Sigma 20mm f/2 DG Contemporary (20mm) is tighter — more reach and compression for portraits
Where to buy
7Artisans AF 10mm f/2.5 (fisheye)See price on Amazon
Sigma 20mm f/2 DG ContemporarySee price on Amazon
FAQ
What's the difference between the 7Artisans AF 10mm f/2.5 (fisheye) and the Sigma 20mm f/2 DG Contemporary?
The 7Artisans AF 10mm f/2.5 (fisheye) is 10mm f/2.5 prime, full-frame; the Sigma 20mm f/2 DG Contemporary is 20mm f/2 prime, full-frame. Both fit the L-Mount.
Which is better in low light, the 7Artisans AF 10mm f/2.5 (fisheye) or the Sigma 20mm f/2 DG Contemporary?
The Sigma 20mm f/2 DG Contemporary — its f/2 maximum aperture lets in more light and gives more background blur than the f/2.5 of the other.
Do the 7Artisans AF 10mm f/2.5 (fisheye) and Sigma 20mm f/2 DG 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).
More L-Mount comparisons: Panasonic Lumix S 70-300mm f/4.5-5.6 Macro OIS vs Sigma 100-400mm f/5-6.3 DG DN OS · Panasonic Lumix S 20-60mm f/3.5-5.6 vs Panasonic Lumix S 24-105mm f/4 Macro OIS · Sigma 24mm f/2 DG Contemporary vs Sigma 17mm f/4 DG Contemporary · Sigma 24mm f/3.5 DG Contemporary vs Sigma 17mm f/4 DG Contemporary · all L-Mount lenses · all comparisons