Extenders Only one Extender can be attached to the lens and camera. If you use an Extender on the lens mounted on a EOS A2/A2E/5, set the exposure compensation to -1/2 stop for the EF 1.4 X II or -1 stop for the EF 2X II.
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 EF 1.4 x II or EF 2x II.
You can attach extension tube EF12 II or EF25 II for magnified shots. The shooting distance and magnification are shown below. Camera-to-Subject Distance ( mm ) Magnification Near Far Near Far EF 12 II 5466 51418 0.16x 0.02x EF 25 II 4982 24356 0.19x 0.04x