Canon Speedlite 600EX-RT Instruction Manual - Page 69
Test Flash and Modeling Flash from a Slave Unit
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Test Flash and Modeling Flash from a Slave Unit 5 Take the picture. X Each slave unit fires in the respective flash modes set. When the flash mode of the firing group is set to or , exposure is controlled to obtain a standard exposure for the main subject as a single group. If you shoot with multiple firing groups pointing toward the main subject, overexposure may result. The firing groups to be fired do not need to be consecutive; for example, A, C, E can be set. Test Flash and Modeling Flash from a Slave Unit In radio transmission wireless shooting, you can fire the test flash and modeling flash from a 600EX-RT set as a slave unit. 1 Display . Press the slave unit's function button 4 to display . X > and are displayed. 2 Fire the flash. Test flash Press the slave unit's function button 3 . Modeling flash (p.38) Press the slave unit's function button 2 >. Modeling flash is not possible from a slave unit with cameras released up to 2011. For the precautions related to modeling flash, see page 38. When two or more units are set to master, the master unit with the lamp lit in green is the one that fires. 67