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EF 400mm f/4 DO IS USM (3)
 
 
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CMS-XML Using Extenders (Sold Separately) with the EF 400mm f/4 DO IS USM lens
Lens specifications when using extender EF1.4x II or EF 2x II are as follows.
CMS-XML Using Extension Tubes (Sold Separately) with the EF 400mm f/4 DO IS USM lens
You can attach extension tube EF12 II or EF 25 II for magnified shots. The shooting distance and magnification are shown below.
CMS-XML Using the Image Stabilizer on the EF 400mm f/4 DO IS USM lens
Tips on Using the Image Stabilizer The Image Stabilizer also operates when the lens is used with extension tube EF12 II or EF 25 II or the extender EF1.4x II or EF 2x II. Pictures may look distorted after being taken depending on the camera, but this doesn't affect shooting. If you set the camera's Custom Function to change the assigned button to operate the AF, the Image Stabilizer will operate when you press the newly assigned AF button.