Sigma 17-50mm F2.8 EX DC HSM Pentax on Pentax K-3 vs Pentax smc DA 50mm f1.8 on Pentax K-3

COMPARISON SELECTION (3 selected items max.)

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

DXOMARK Score

Best at f=50mm & f/2.8 [?]
25

Lens Metric Scores

Sharpness [?]
12 P-Mpix
Transmission [?]
2 TStop
Distortion [?]
0.1 %
Vignetting [?]
-0.8 EV
Chr. aberration [?]
2 µm