Canon Speedlite 600EX-RT Instruction Manual - Page 32

e: Flash Coverage Setting When the flash coverage is set to manual, set a flash coverage that is wider than the angle of view you are shooting, to prevent the periphery of the picture from being darker. When a lens with a focal length inferior to 20 mm is mounted, the warning is displayed on the LCD panel. When using a camera with a smaller image sensor size than full-frame, the warning is displayed when the actual shooting angle of view is wider than the angle of view of the 20 mm lens. When shooting with the camera and Speedlite's PC terminal connected by a commercially-available sync cord, set the flash coverage manually. Wide Panel When you use the flash's built-in wide panel together, you can perform flash shooting with ultra-wide angle lenses up to 14 mm. 1 Pull out the wide panel. Pull out the wide panel. 2 Push back the catchlight panel. EF15mm f/2.8 Fisheye and EF8-15mm f/4L Fisheye USM angles of view are not supported. You cannot set the flash coverage while using the wide panel. Since underexposure may occur, the warning is displayed on the LCD panel when using the wide panel with bounce shooting. Pull out the wide panel gently. Using excessive force may detach the wide panel. 30