
Flash Photography with Speedlite 550EX
 Below the viewfinder, the display shown by 1 appears for 0.5 sec. followed by the display shown by 2.
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2  | 
4Compose the shot and take the picture.
 If the subject is too far away resulting in underexposure, the 
 icon will blink. Get closer to the subject and follow steps 3 and 4.
C.Fn 
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