Canon 600EX User Manual

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e: Flash Coverage Setting
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.
Wide Panel
 
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 
<O> warning is displayed on the LCD panel. When using a camera 
with a smaller image sensor size than full-frame, the <O> 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.
 
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 <N> 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.
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