5D + 1.4x + Mamiya 645 = Err 01

Discussion in 'Canon EOS' started by steve_larese|1, Jan 12, 2012.

  1. Hi all,
    I'm attempting to use a Mamiya 645 80mm lens with an adapter with a 1.4x extender on my 5d. Everything mounts great, and the image through the viewfinder looks good. When I take the shot, I get this:
    Err 01 Communications between the camera and the lens is faulty. Clean the lens.
    I am using manual mode. Any ideas how to get this to work?
  2. I think the extender is making the camera think there is an EF lens attached, but there isn't, so the message is literally correct from the camera's point of view. Try removing the extender or putting electrical tape over its electrical contacts (on the camera side).
  3. Rotate the 1.4x TC by 1/10 of a turn. It won't be locked, but the camera will work.
  4. Perfect, thanks guys :D
  5. Do the tape.

Share This Page