Canon Speedlite EL-5 Advanced User's Manual page 63

3.
Set the flash coverage.
Press the joystick vertically or horizontally or turn <
flash coverage, then push the joystick straight in.
To set automatically, select <
value (focal length in mm).
Note
Flash coverage that you set manually should match or exceed the shooting angle
of view, to avoid vignetting.
A < > warning is displayed on the LCD panel when a lens with a focal
length less than 24 mm is attached. Similarly, a <
when you are using a camera with an image sensor smaller than full-frame and the
actual shooting angle of view exceeds that of a 24 mm lens.
< > can also be assigned to vertical or horizontal joystick positions, in
P.Fn-08.
>, and to set manually, select a
63
> to select the
> warning is displayed