Pentax HD DA 20-40mm F2.8-4 ED Limited DC WR on Pentax K-3 vs Pentax HD DA 21mm F3.2 AL Limited on Pentax K-3 vs Pentax HD DA 40mm F2.8 Limited on Pentax K-3

COMPARISON SELECTION (3 selected items max.)

DXOMARK Score

Best at f=30mm & f/3.5 [?]
17

Lens Metric Scores

Sharpness [?]
9 P-Mpix
Transmission [?]
3.6 TStop
Distortion [?]
0.4 %
Vignetting [?]
-1 EV
Chr. aberration [?]
7 µm

DXOMARK Score

Best at f=21mm & f/3.2 [?]
18

Lens Metric Scores

Sharpness [?]
11 P-Mpix
Transmission [?]
3.5 TStop
Distortion [?]
0.6 %
Vignetting [?]
-1.1 EV
Chr. aberration [?]
13 µm

DXOMARK Score

Best at f=40mm & f/2.8 [?]
19

Lens Metric Scores

Sharpness [?]
9 P-Mpix
Transmission [?]
3 TStop
Distortion [?]
0.2 %
Vignetting [?]
-0.8 EV
Chr. aberration [?]
5 µm