Lenses: 135 f2 L , 180 f3.5L Macro, 200 f1.8 L, 200 f2.8 L, 200 f2.8 II L, 300 f2.8 L, 300 f4 L, 300 f4 L IS, 400 f2.8 L, 400 f2.8 II L, 400 f5.6 L, 500 f4.5 L, 600 f4 L, 1200 f5.6 L and the 70-200 f2.8 L.

Lenses in this list with f stop other than 2.8 will work, but not in autofocus. When used with the EOS-3, autofocusing is possible at the center focusing point up to F4 with the EF 2X (excluding the EF 180mm F3.5L Macro USM).