Canon MiniTT1 Manual Do Utilizador

OO

This simple mode of operation allows you to use one or more
remote E-TTL II flashes as one zone of light. All remote E-TTL II 
flashes will fire at the same power level which is chosen 
automatically by the camera.

1.  Slide the MiniTT1 Transmitter onto the camera
  and tighten the locking ring.
2.  Slide the remote Speedlite onto a FlexTT5
  Transceiver, tighten the locking ring, and secure
  the FlexTT5. Repeat for each remote Speedlite.
  The remote Speedlites should be set to normal
  mode, not <MASTER> or <SLAVE>.
3.  Trigger normally.

O

Please read your Canon manuals on Fully 

  Automatic Wireless Flash (also called E-TTL II
  Wireless Autoflash).

This mode of operation is the same as using Canon’s
wireless system with one of the following directly in
the shoe of the camera:
•   A Canon ST-E2 in non-ratio mode
•   A 580EX (I or II) Speedlite in <MASTER> mode, 
  main flash off, in non-ratio mode.