Canon 550EX manual Flash Exposure Confirmation, Using the Zoom Button and Wide Panel

7. Flash Exposure Confirmation

When a correct flash exposure has been obtained, the flash exposure confirmation lamp on the back of the Speedlite lights in yellow-green for 3 sec. If the flash exposure confirmation lamp does not light after the flash fires, the picture may have been underexposed. Move closer to the subject and try again.

8. Using the Zoom Button and Wide Panel

The Speedlite’s flash head zooms automatically to provide adequate flash coverage for the current lens focal length. The Speedlite can provide adequate flash coverage for 24mm to 105mm lens focal lengths. If a zoom lens is zoomed, the flash head also zooms to suit the lens focal length. The flash head’s zoom setting can also be set manually.

The Speedlite’s built-in wide panel provides flash coverage for 17mm wide- angle lenses.

18