DEar friend,can I operate auto focus with 400 2.8 II L, 1 extender 2x, 1 extender 1.4x atached on my EOS 3 Tanks Marco

-- Marco Correa (mjoia@uol.com.br), December 27, 2000

Answers

You are referring to the Canon EF teleconverters? Yes, but you will need an EF extension tube to connect the 2 teleconverters together.

-- Jay (infinitydt@aol.com), December 30, 2000.