Pentax smc DA 21mm F3.2 AL Limited on Pentax K-5 vs Olympus M.ZUIKO DIGITAL 17mm f2.8 on Panasonic Lumix DMC GH2

COMPARISON SELECTION (3 selected items max.)

DXOMARK Score

Best at f=21mm & f/5.6 [?]
14

Lens Metric Scores

Sharpness [?]
7 P-Mpix
Transmission [?]
3.5 TStop
Distortion [?]
0.6 %
Vignetting [?]
-1.2 EV
Chr. aberration [?]
17 µm

DXOMARK Score

Best at f=17mm & f/2.8 [?]
14

Lens Metric Scores

Sharpness [?]
6 P-Mpix
Transmission [?]
2.9 TStop
Distortion [?]
2 %
Vignetting [?]
-1.2 EV
Chr. aberration [?]
21 µm