General Canon Operational Considerations
Note the following operational considerations. These apply to all Canon cameras unless otherwise noted.
With a Canon camera and ControlTL radios the first exposure after initial connection or power-on is the calibration shot. It is recommended that you take the calibration shot at 1/160. This initiates communication between the camera and radio. This shot will not fire remote flashes.
Manually Select Camera Model
For best results with a Canon camera and ControlTL radios, be sure to manually select your camera model on the transmitting radio. Camera model selection is found on the "Misc" tab.