Panasonic LUMIX G X VARIO 12-35mm / F2.8 ASPH. / POWER O.I.S. on Panasonic Lumix DMC-GH3 vs Sigma 17-50mm F2.8 EX DC OS HSM Nikon on Nikon D7100 vs Sigma 17-70mm F2.8-4 DC MACRO HSM C Pentax on Pentax K-3

COMPARISON SELECTION (3 selected items max.)
Panasonic LUMIX G X VARIO 12-35mm / F2.8 ASPH. / POWER O.I.S.
Panasonic LUMIX G X VARIO 12-35mm / F2.8 ASPH. / POWER O.I.S.

DXOMARK Score
Best at f=25mm & f/2.8 [?]
17

Lens Metric Scores

Sharpness [?]
9 P-Mpix
Transmission [?]
3.1 TStop
Distortion [?]
0.9 %
Vignetting [?]
-0.8 EV
Chr. aberration [?]
11 µm
Sigma 17-50mm F2.8 EX DC OS HSM Nikon
Sigma 17-50mm F2.8 EX DC OS HSM Nikon

DXOMARK Score
Best at f=50mm & f/2.8 [?]
20

Lens Metric Scores

Sharpness [?]
14 P-Mpix
Transmission [?]
3.3 TStop
Distortion [?]
0.3 %
Vignetting [?]
-1.1 EV
Chr. aberration [?]
10 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