Sigma 18-300mm F3.5-6.3 DC MACRO HSM C Pentax on Pentax K-5 IIs vs Pentax smc DA 18-270mm F3.5-6.3 ED SDM on Pentax K-5 IIs vs Sigma Sigma 18-200mm F3.5-6.3 II DC OS HSM on Pentax K-5 II

COMPARISON SELECTION (3 selected items max.)

DxOMark Score

Best at f=50mm & f/4.5 [?]
15

Lens Metric Scores

Sharpness [?]
7 P-Mpix
Transmission [?]
5.7 TStop
Distortion [?]
0.6 %
Vignetting [?]
-1 EV
Chr. aberration [?]
8 µm

DxOMark Score

Best at f=18mm & f/3.5 [?]
13

Lens Metric Scores

Sharpness [?]
6 P-Mpix
Transmission [?]
5.7 TStop
Distortion [?]
0.7 %
Vignetting [?]
-0.8 EV
Chr. aberration [?]
9 µm

DxOMark Score

Best at f=18mm & f/4 [?]
13

Lens Metric Scores

Sharpness [?]
6 P-Mpix
Transmission [?]
5.5 TStop
Distortion [?]
0.7 %
Vignetting [?]
-1 EV
Chr. aberration [?]
9 µm