Usable lenses: Lens Focal Length & Maximum Aperture EF1.4X III EF2X III EF 135mm f/2L USM 189mm f/2.8 270mm f/4 EF 180mm f/3.5L Macro USM 252mm f/4.5 360mm f/6.7 EF 200mm f/2.8L USM 280mm f/ 4 400 mm f/5.6 EF 200mm f/2.8L II USM 280 mm f/4
Lenses that support changes in the AF speed USM EF 400mm f/4 DO IS II USM EF 11-24 mm f/4L USM EF 50mm f/1.8 STM EF 35 mm f/ 1.4 L II USM EF-S 18-135mm f/3.5-5.6 IS USM EF 24-105mm f/4L IS II USM EF 70-300 mm f/4-5.6
Extenders Lens specifications when using extender EF 1.4 x II/III or EF 2x II/III are as follows. ... EF 1.4 x III EF 2x III Focal length ( mm ) 560 800 Aperture f/4 - 45 f/5.6 - 64 Angle of View Horizontal 3°40' 2°35' ... Errors may occur if you attach the extender to the camera first.