580EX II Speedlite : How to set the flash coverage automatically or manually.
Article ID: ART121061
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Date published: 05/12/2015
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Date last updated: 08/17/2015
Description
How to set the flash coverage automatically or manually.
Solution
The flash coverage can be set to match the lens focal length from 24mm to 105mm. The flash coverage can be set automatically or manually. Also, with the built-in wide panel, the flash coverage can be expanded for 14mm wide-angle lenses.
Press the button
Turn the dial to change the flash coverage
If the <M> is not displayed, the flash coverage will be set automatically
If you set the flash coverage manually, make sure it covers the lens focal length so that the picture will not a dark periphery
If you use a commercially-available sync cord to connect the camera to the Speedlite's terminal, set the flash zoom manually