Canon 2X Extender EF III + Canon EF 400mm f/2.8L IS III USM
Scores (no lens corrections)
RAW score
80
Resolution
74
Distortion
87
Vignet
82
Lat. C.A.
88
Scores (WYSIWYG)
JPG score
84
Resolution
–
Distortion
85
Vignet
85
Lat. C.A.
93
More
AF speed
80
Test camera
Canon 5DsR
Filter size (mm)
77
- Camera mount
Canon EF