Sony DT 16-50mm F2.8 SSM on Sony SLT Alpha 77 vs Sigma 17-50mm F2.8 EX DC HSM Sony on Sony SLT Alpha 77 vs Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Nikon on Nikon D7000

COMPARISON SELECTION (3 selected items max.)

DXOMARK Score

Best at f=24mm & f/2.8 [?]
19

Lens Metric Scores

Sharpness [?]
10 P-Mpix
Transmission [?]
2.9 TStop
Distortion [?]
0.3 %
Vignetting [?]
-1.2 EV
Chr. aberration [?]
7 µm

DXOMARK Score

Best at f=50mm & f/2.8 [?]
16

Lens Metric Scores

Sharpness [?]
8 P-Mpix
Transmission [?]
2.9 TStop
Distortion [?]
0.3 %
Vignetting [?]
-1 EV
Chr. aberration [?]
10 µm

DXOMARK Score

Best at f=17mm & f/2.8 [?]
16

Lens Metric Scores

Sharpness [?]
9 P-Mpix
Transmission [?]
3.2 TStop
Distortion [?]
0.3 %
Vignetting [?]
-1 EV
Chr. aberration [?]
5 µm