Canon Speedlite 90EX Instruction Manual

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Contents

Canon Speedlite 90EX Instruction Manual Manual pdf 20 page image

18In this shooting mode, all flash units except the 90EX fire with the same flash output, and E-TTL II autoflash is used to obtain a standard exposure from the total flash output.1 Check the communication channel. You can change the transmission channel to avoidinterference with other wireless multiple Speedlitesystems being used. Set the same channel for boththe master unit and slave unit.2 Position the camera and Speedlites. Position the Speedlites within the range shown onpage 20.3 Set the master unit’s flash mode to<a>. For shooting, <a> will also be setautomatically for the slave unit(s).Fully Automatic Wireless FlashCOPY