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The 320EX Speedlite will provide flash coverage for the following focal lengths.

• When using an EF- S lens with a focal length of 32 mm or longer or an EF lens with a focal length of 50 mm or longer, extend the flash head for greater flash output and longer flash range. • When the flash head is extended, the <TELE> lamp on the Speedlite lights or blinks.

Here is a basic wireless flash setup for the 320EX Speedlite

Sample Wireless Flash System You can easily set up an E-TTL autoflash system with the 550EX, ST-E2 or MR-14EX as the sender unit and the 420EX as the receiver unit. Just set the 420EX's wireless selector to <receiver> and position the receiver unit( s ) as desired within the wireless transmission range

QuickGuide to Canon Integrated Speedlite Transmitter Operation

1. Set up the camera for Integrated Speedlite Transmitter operation. 2. Set up the off-camera Speedlite( s ) for wireless control. This QuickGuide will describe both steps.