Canon EF 400mm f5.6L USM - Manual (Page 11)

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11. Extension Tubes (Sold separately)
You can attach Extension Tube EF12 II or EF25 II for magnified shots. The shooting distance and
magnification are shown below.
Camera-to-Subject
Magnification
Distance (mm)
Near Far Near Far
EF12 II 691 1661 0.29
Ч
0.09
Ч
EF25 II 579 883 0.41
Ч
0.20
Ч
Manual focusing is recommended for accurate focusing.
EF135mm f/2L USM
Camera-to-Subject
Magnification
Distance (mm)
Near Far Near Far
EF12 II 1986 7786 0.18
Ч
0.04
Ч
EF25 II 1661 3925 0.24
Ч
0.09
Ч
EF300mm f/4L USM
Camera-to-Subject
Magnification
Distance (mm)
Near Far Near Far
EF12 II 1169 3284 0.23
Ч
0.06
Ч
EF25 II 977 1801 0.32
Ч
0.14
Ч
EF200mm f/2.8L II USM
Camera-to-Subject
Magnification
Distance (mm)
Near Far Near Far
EF12 II 2893 13449 0.16
Ч
0.03
Ч
EF25 II 2460 6610 0.21
Ч
0.07
Ч
EF400mm f/5.6L USM
COP
Y