Item Includes:Lens Caps, Pouch

Description This tele extender can be used with fixed focal length lenses 135mm and longer (except the 135mm f/2.8 Softfocus lens), and the EF 70-200 f/2.8L, 70-200 f/2.8L IS, 70-200 f/4.0L, and 100-400 f/4.5-5.6L IS zoom lenses. Superb optically, it preserves the image quality of the lens it's mounted to and multiplies its focal length 1.4x. Effective aperture is reduced by one f-stop; autofocus is possible on any EOS camera when combined with a lens having an f/4 or faster maximum aperture. The new version II maintains the outstanding optics of the previous version, and adds enhanced weather- resistant construction, and improved anti-reflective surfaces in the barrel.

(When used with EF Extender EF 1.4x II, the EF100-400mm f/4.5-5.6L IS USM lens is compatible for auto exposure with all EOS cameras. However, you lose autofocus with all EOS cameras except those with a 45-point AF system, such as EOS-3, EOS-1v, EOS-1D, EOS-1Ds and EOS-1D Mark II. Only the center focusing point is functional when this lens/extender combination is used with the 45-point AF cameras. Also, when the EF100-400L is used with the EF 1.4x II, the Image Stabilizer function does not work with older EOS 35mm cameras such as the EOS 650, 620, 630/600, RT, 700, 750, 850, EOS-1, A2/A2E, 10s, Elan, Rebel/Rebel S, and Rebel II/Rebel SII.)

Specifications
Construction	4 groups /5 elements
Maximum Magnification	1.4x
Dimensions (Length x Diameter)	2.9" x 1.1" / 72.8 x 27.2mm
Weight	7.8 oz./ 220g

With Extender EF1.4x II attached

When used with EF Lens	Focal Length ( mm )	Maximum Aperture ( f/ )	Maximum Magnification ( x )	AF	IS
EF135mm f/2L USM	189mm	2.8−45	0.27x	Ο	-
EF180mm f/3.5L Macro USM	252mm	5−45 (4.5−45 ) *3	1.4x	Ο *4	-
EF200mm f/2L IS USM	280mm	2.8−45	0.18x	Ο	Ο
EF200mm f/2.8L II USM	280mm	4−45	0.22x	Ο	-
EF300mm f/2.8L IS USM	420mm	4−45	0.19x	Ο	Ο
EF300mm f/4L IS USM	420mm	5.6−45	0.33x	Ο	Ο
EF400mm f/2.8L IS USM	560mm	4−45	0.22x	Ο	Ο
EF400mm f/5.6L USM	560mm	8−45	0.18x	Ο *5	-
EF500mm f/4L IS USM	700mm	5.6−45	0.17x	Ο	Ο
EF600mm f/4L IS USM	840mm	5.6−45	0.17x	Ο	Ο
EF800mm f/5.6L IS USM	1,120mm	8−45	0.2x	Ο *5	Ο *7
EF70-200mm f/2.8L IS USM	98−280mm	4−45	0.24x	Ο	Ο
EF70-200mm f/2.8L USM	98−280mm	4−45	0.22x	Ο *6	-
EF70-200mm f/4L IS USM	98−280mm	5.6−45	0.31x	Ο	Ο
EF70-200mm f/4LUSM	98−280mm	5.6−45	0.31x	Ο	-
EF100-400mm f/4.5-5.6L IS USM	140−560mm	6.3−57 ( 6.7−54 ) *3	0.28x	Ο *5	Ο *7

With Extender EF2x II attached

When used with EF Lens	Focal Length ( mm )	Maximum Aperture ( f/ )	Maximum Magnification ( x )	AF	IS
EF135mm f/2L USM	270mm	4−64	0.38x	Ο	-
EF180mm f/3.5L Macro USM	360mm	7.1−64 ( 6.7−64 ) *3	2.0x	×	-
EF200mm f/2L IS USM	400mm	4−64	0.24x	Ο	Ο
EF200mm f/2.8L II USM	400mm	5.6−64	0.32x	Ο	-
EF300mm f/2.8L IS USM	600mm	5.6−64	0.28x	Ο	Ο
EF300mm f/4L IS USM	600mm	8−64	0.47x	Ο *5	Ο *7
EF400mm f/2.8L IS USM	800mm	5.6−64	0.31x	Ο	Ο
EF400mm f/5.6L USM	800mm	11−64	0.25x	×	-
EF500mm f/4L IS USM	1,000mm	8−64	0.25x	Ο *5	Ο *7
EF600mm f/4L IS USM	1,200mm	8−64	0.24x	Ο *5	Ο *7
EF800mm f/5.6L IS USM	1,600mm	11−64	0.28x	×	Ο *7
EF70-200mm f/2.8L IS USM	140−400mm	5.6−64	0.36x	Ο	Ο
EF70-200mm f/2.8L USM	140−400mm	5.6−64	0.33x	Ο *6	-
EF70-200mm f/4L IS USM	140−400mm	8−64	0.45x	Ο *5	Ο *7
EF70-200mm f/4L USM	140−400mm	8−64	0.45x	Ο *5	-
EF100-400mm f/4.5-5.6L IS USM	200−800mm	9−81 ( 9.5−76 ) *3	0.41x	×	Ο *7