Sigma 17-50mm F2.8 EX DC OS HSM Nikon on Nikon D7100 vs Sigma 17-70mm F2.8-4 DC MACRO OS HSM C Nikon on Nikon D7100 vs Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Nikon on Nikon D7100

COMPARISON SELECTION (3 selected items max.)

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

DXOMARK Score

Best at f=24mm & f/3.2 [?]
19

Lens Metric Scores

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

DXOMARK Score

Best at f=17mm & f/2.8 [?]
18

Lens Metric Scores

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