Sigma 18-35mm F1.8 DC HSM A Nikon on Nikon D300s vs Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Nikon on Nikon D300 vs Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical [IF] Canon on Canon EOS 70D

COMPARISON SELECTION (3 selected items max.)
Sigma 18-35mm F1.8 DC HSM A Nikon
Sigma 18-35mm F1.8 DC HSM A Nikon

DXOMARK Score
Best at f=18mm & f/1.8 [?]
20

Lens Metric Scores

Sharpness [?]
10 P-Mpix
Transmission [?]
2 TStop
Distortion [?]
0.4 %
Vignetting [?]
-1.3 EV
Chr. aberration [?]
8 µm
Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Nikon
Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Nikon

DXOMARK Score
Best at f=17mm & f/2.8 [?]
12

Lens Metric Scores

Sharpness [?]
8 P-Mpix
Transmission [?]
3.1 TStop
Distortion [?]
0.3 %
Vignetting [?]
-1 EV
Chr. aberration [?]
5 µm
Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical [IF] Canon
Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical [IF] Canon

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

Lens Metric Scores

Sharpness [?]
10 P-Mpix
Transmission [?]
3.6 TStop
Distortion [?]
0.4 %
Vignetting [?]
-0.8 EV
Chr. aberration [?]
4 µm