Sony FE 100-400mm F4.5-5.6 GM OSS on Sony A7R II vs Canon EF 300mm f/4L IS USM on Canon EOS 5DS R

COMPARISON SELECTION (3 selected items max.)
Sony FE 100-400mm F4.5-5.6 GM OSS
Sony FE 100-400mm F4.5-5.6 GM OSS

DXOMARK Score
Best at f=100mm & f/4.5 [?]
29

Lens Metric Scores

Sharpness [?]
36 P-Mpix
Transmission [?]
5.9 TStop
Distortion [?]
0.4 %
Vignetting [?]
-0.8 EV
Chr. aberration [?]
5 µm
Canon EF 300mm f/4L IS USM
Canon EF 300mm f/4L IS USM

DXOMARK Score
Best at f=300mm & f/5.6 [?]
23

Lens Metric Scores

Sharpness [?]
18 P-Mpix
Transmission [?]
4.6 TStop
Distortion [?]
0.2 %
Vignetting [?]
-0.8 EV
Chr. aberration [?]
6 µm