Sigma 17-70mm F2.8-4 DC MACRO OS HSM C Nikon on Nikon D7000 vs Sigma 17-50mm F2.8 EX DC OS HSM Nikon on Nikon D7000 vs Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical [IF] Nikon on Nikon D7000

COMPARISON SELECTION (3 selected items max.)

DXOMARK Score

Best at f=24mm & f/3.2 [?]
16

Lens Metric Scores

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

DXOMARK Score

Best at f=50mm & f/2.8 [?]
17

Lens Metric Scores

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

DXOMARK Score

Best at f=24mm & f/3.5 [?]
15

Lens Metric Scores

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