Sigma 18-35mm F1.8 DC HSM A Canon on Canon EOS 7D vs Canon EF-S 17-55mm f/2.8 IS USM on Canon EOS 7D vs Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Canon on Canon EOS 7D

COMPARISON SELECTION (3 selected items max.)

DxOMark Score

Best at f=18mm & f/1.8 [?]
24

Lens Metric Scores

Sharpness [?]
13 P-Mpix
Transmission [?]
1.8 TStop
Distortion [?]
0.3 %
Vignetting [?]
-1.1 EV
Chr. aberration [?]
7 µm

DxOMark Score

Best at f=35mm & f/2.8 [?]
15

Lens Metric Scores

Sharpness [?]
9 P-Mpix
Transmission [?]
3.4 TStop
Distortion [?]
0.4 %
Vignetting [?]
-1.1 EV
Chr. aberration [?]
6 µm

DxOMark Score

Best at f=17mm & f/2.8 [?]
14

Lens Metric Scores

Sharpness [?]
10 P-Mpix
Transmission [?]
3.3 TStop
Distortion [?]
0.3 %
Vignetting [?]
-0.7 EV
Chr. aberration [?]
6 µm