Sigma 20mm F1.8 EX DG ASP RF Nikon on Nikon D800E vs Pentax HD DA 20-40mm F2.8-4 ED Limited DC WR on Pentax K-3

SÉLECTION (3 produits max.)
Sigma 20mm F1.8 EX DG ASP RF Nikon
Sigma 20mm F1.8 EX DG ASP RF Nikon

Score DXOMARK
Optimale à f=20mm & f/2.8 [?]
28

Valeurs clés

Piqué [?]
23 P-Mpix
Transmission [?]
2.1 TStop
Distorsion [?]
0.6 %
Vignettage [?]
-2.3 EV
Aberration chr. [?]
8 µm
Pentax HD DA 20-40mm F2.8-4 ED Limited DC WR
Pentax HD DA 20-40mm F2.8-4 ED Limited DC WR

Score DXOMARK
Optimale à f=30mm & f/3.5 [?]
17

Valeurs clés

Piqué [?]
9 P-Mpix
Transmission [?]
3.6 TStop
Distorsion [?]
0.4 %
Vignettage [?]
-1 EV
Aberration chr. [?]
7 µm