Pentax HD DA 20-40mm F2.8-4 ED Limited DC WR on Pentax K-3 vs Nikon AF-S NIKKOR 18-35mm f/3.5-4.5G ED on Nikon D7100 vs Canon EF 17-40mm f/4L USM on Canon EOS 7D

SÉLECTION (3 produits max.)
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
Nikon AF-S NIKKOR 18-35mm f/3.5-4.5G ED
Nikon AF-S NIKKOR 18-35mm f/3.5-4.5G ED

Score DXOMARK
Optimale à f=24mm & f/4 [?]
20

Valeurs clés

Piqué [?]
11 P-Mpix
Transmission [?]
4.3 TStop
Distorsion [?]
0.4 %
Vignettage [?]
-0.7 EV
Aberration chr. [?]
7 µm
Canon EF 17-40mm f/4L USM
Canon EF 17-40mm f/4L USM

Score DXOMARK
Optimale à f=24mm & f/4 [?]
13

Valeurs clés

Piqué [?]
8 P-Mpix
Transmission [?]
4.4 TStop
Distorsion [?]
0.2 %
Vignettage [?]
-0.5 EV
Aberration chr. [?]
6 µm