Canon EF 600mm f4L IS II USM - Manual (Page 21)

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17. 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.
EF500mm f/4L IS II USM
EF600mm f/4L IS II USM
MF mode is recommended for accurate focusing.
Focusing Distance Range (mm) Magnification (×)
Close distance Long distance Close distance Long distance
EF12 II 3265 20570 0.18 0.03
EF25 II 2904 9917 0.22 0.06
Focusing Distance Range (mm) Magnification (×)
Close distance Long distance Close distance Long distance
EF12 II 4028 29191 0.17 0.02
EF25 II 3619 13941 0.20 0.05
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