Speedlite 380EX's flash head zooms automatically to provide adequate flash coverage for the lens focal length in use. Flash coverage is provided for 24mm to 105mm focal lengths. The corresponding flash coverage indicator on the Speedlite lights
When a zoom lens is used, the Speedlite adjusts the flash coverage automatically whenever the lens is zoomed. The corresponding flash coverage indicator lights.
- When the flash coverage changes, the Speedlites Guide No. also changes.
- If a lens wider than 24mm is used, the light will falloff at the picture's periphery
- Using any lens longer than 100mm light the 105mm flash coverage indicator
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Turn on the camera
Turn on the Speedlite 380EX
Press the shutter button halfway. The flash coverage indicator corresponding to the lens focal length lights.
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