Canon EF 200-400mm f/4L IS USM Extender 1.4x on Canon EOS 1Ds Mark III vs Nikon AF-S NIKKOR 200-400mm f/4G ED VR II on Nikon D3X

COMPARISON SELECTION (3 selected items max.)

DXOMARK Score

Best at f=300mm & f/4 [?]
21

Lens Metric Scores

Sharpness [?]
17 P-Mpix
Transmission [?]
4.7 TStop
Distortion [?]
0 %
Vignetting [?]
-1 EV
Chr. aberration [?]
2 µm

DXOMARK Score

Best at f=250mm & f/4 [?]
21

Lens Metric Scores

Sharpness [?]
15 P-Mpix
Transmission [?]
4.9 TStop
Distortion [?]
0.1 %
Vignetting [?]
-1.2 EV
Chr. aberration [?]
11 µm