Sigma 17-50mm F2.8 EX DC HSM Pentax on Pentax K-3 vs Pentax HD DA 15mm F4 ED AL Limited on Pentax K-5 IIs vs Pentax HD DA 40mm F2.8 Limited on Pentax K-3

COMPARISON SELECTION (3 selected items max.)
Sigma 17-50mm F2.8 EX DC HSM Pentax
Sigma 17-50mm F2.8 EX DC HSM Pentax

DXOMARK Score
Best at f=50mm & f/2.8 [?]
21

Lens Metric Scores

Sharpness [?]
13 P-Mpix
Transmission [?]
3.1 TStop
Distortion [?]
0.3 %
Vignetting [?]
-1 EV
Chr. aberration [?]
9 µm
Pentax HD DA 15mm F4 ED AL Limited
Pentax HD DA 15mm F4 ED AL Limited

DXOMARK Score
Best at f=15mm & f/5.6 [?]
15

Lens Metric Scores

Sharpness [?]
8 P-Mpix
Transmission [?]
4.3 TStop
Distortion [?]
0.3 %
Vignetting [?]
-1.1 EV
Chr. aberration [?]
12 µm
Pentax HD DA 40mm F2.8 Limited
Pentax HD DA 40mm F2.8 Limited

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