11.1 The Seven Basic Methods for Off-camera Flash Control11.2 Off-Camera Method 1—Open flash11.3 Off-Camera Methods 2 and 3—Wired cords11.4 Off-Camera Method 2—Wired sync-only: PC cords11.5 Off-Camera Method 3—Wired with automatic metering: Canon flash cords11.6 Off-Camera Methods 4 and 5—Wireless optical control11.7 Off-Camera Method 4—Wireless optical, sync-only: optical slaves11.8 Off-Camera Method 5—Wireless optical with automatic metering: Canon optical wireless E-TTL11.9 Off-Camera Methods 6 and 7—Wireless, radio frequency (RF)11.10 Off-Camera Method 6—Radio, sync-only11.11 Off-Camera Method 3—Radio with automatic metering