Sigma 17-50mm F2.8 EX DC HSM Pentax on Pentax K-3 vs Sigma 17-70mm F2.8-4 DC MACRO HSM C Pentax 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
Sigma 17-70mm F2.8-4 DC MACRO HSM C Pentax
Sigma 17-70mm F2.8-4 DC MACRO HSM C Pentax

DXOMARK Score
Best at f=24mm & f/3.5 [?]
19

Lens Metric Scores

Sharpness [?]
10 P-Mpix
Transmission [?]
3.9 TStop
Distortion [?]
0.4 %
Vignetting [?]
-1 EV
Chr. aberration [?]
8 µm