My camera is Canon EOS400d. I'm going to buy a hot shoe flashlight recently. What is the specific installation method and use method of flasher? Expert help. . .

1, directly installed on the camera's hot boots, can be used when turned on. Some lights are set manually, and some automatically listen to the camera "command";

2. Off-board flash memory. It is necessary to install a flasher transmitter on the camera's hot boots, a receiver on the flash, set the channel according to the requirements of the flash, and press the shutter to flash the light;

3. Off-board flash memory. Use the camera's random flash as the main light to flash. When the flash of the camera flashes, the flash outside the camera will also flash;

4. Use a special infrared flash.

I hope it works for you.