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Using Extenders (Sold Separately) with the EF 500mm f/4L IS II USM or EF 600mm f/4L IS II USM lens

Extenders EF2x II/III Focal length (mm) 700 1000 840 1200 Aperture f/5.6 - 45 f/8 - 64 f/5.6 - 45 f/8 - 64

If the batteries do fail, the EF can still be used manually from 1/2 - 1/ 1000 sec. The Variable Aperture AE control will not operate, but you can manually adjust the aperture ring of the lens. A basic exposure guide to follow for bright sunlight (with distinct shadows) is to make a fraction representing the shutter speed needed at f/16 by putting a "one" over the film's ASA rating.

Using the internal extender on the EF 200-400mm f/4L IS USM Extender 1.4x

Internal Extender Switch 40D, EOS 30D, EOS REBEL T3i/600D, EOS REBEL T2i/550D, EOS REBEL T1i/500D, EOS REBEL XSi/450D, EOS REBEL T3/1100D, EOS REBEL XS/ 1000 D, EOS DIGITAL REBEL XTi/400D DIGITAL, EOS-1V/HS, EOS-3

Lenses that can be used with Extender EF1.4X III and EF2X III

Usable lenses: EF 500mm f/4.5L USM * 700mm f/6.7 1000 mm f/9.5 EF 500mm f/4L IS USM 700mm f/5.6 1000 mm f/8 EF 600mm f/4L USM * 840mm f/5.6 1200 mm f/8 EF 600mm f/4L IS USM 840mm f/5.6

Camera / Extender Compatibility Chart for the EF 200-400mm f/4L IS USM Extender 1.4x

Camera/Extender Compatibility Chart *2: EOS650, EOS620, EOS750, EOS750 QD, EOS850, EOS850 QD, EOS700, EOS10S/10, EOS REBEL/ 1000 , EOS REBEL S/ 1000 F, EOS REBEL S QD/ 1000 FN QD, EOS ELAN/100, EOS630/600, EOS RT, EOS-1, EOS REBEL II/ 1000 N, EOS A2/5

Using the Image Stabilizer on the EF 400mm f/4 DO IS II USM lens

Tips on Using the Image Stabilizer D, REBEL T2i/550D, REBEL T1i/500D, DIGITAL REBEL XSi/450D, REBEL T5/1200D, REBEL T3/1100D, DIGITAL REBEL XS/ 1000 D, DIGITAL REBEL XTi/400D DIGITAL, DIGITAL REBEL XT/350D DIGITAL, DIGITAL REBEL/300D DIGITAL, D60, D30,

Using the Image Stabilizer on the EF 500mm f/4L IS II USM lens

Using the Image Stabilizer on the EF 300mm f/2.8L IS II USM lens