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550EX Speedlite : How to set the flash coverage automatically or manually.

Article ID: ART118175 | Date published: 05/12/2015 | Date last updated: 08/17/2015
 

Description

How to set the flash coverage automatically or manually.

Solution

The Speedlite's flash head zooms automatically to provide adequate flash coverage for the current lens focal length. The Speedlite can provide adequate coverage for 24mm to 105mm lens focal lengths. If a zoom lens is zoomed the flash head also zooms to suite the lens focal length. The flash head's zoom setting can also be set manually.

The Speedlites built-in wide panel provides flash coverage for 17mm wide angle lenses.

Automatic Flash Head Zooming

  1. Turn on the camera
  2. Turn on the Speedlite - If M is displayed, press the <ZOOM> button until M turns off
  3. Press the camera's shutter button halfway. The current lens focal length will appear on the Speedlite's LCD panel

Manual Flash Head Zooming

Press the <ZOOM> button. M and ZOOM will be displayed. Keep pressing the <ZOOM> button until the desired zoom setting (focal length) appears. Pressing the <ZOOM> button changes the zoom setting in the loop shown below.

  • If the zoom setting is a focal length longer than the actual lens focal length, the light will fall off along the periphery of the picture.

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