Canon Speedlite 600EX-RT Instruction Manual - Page 15

1 Getting Started and Basic Operations This chapter describes the preparations before starting flash shooting and the basic shooting operations. Cautions for firing continuous flashes To avoid degrading and damaging the flash head due to overheating, do not fire more than 20 continuous flashes. After 20 continuous flashes, allow a rest time of at least 10 min. If you fire more than 20 continuous flashes, and then fire the flash again repeatedly in short intervals, the safety function may activate and restrict flash firing. While flash firing is restricted, the recycling time is automatically set to an interval between approx. 8 and 20 sec. If this happens, allow a rest time of at least 15 min. For details, see "Flash Firing Restriction due to Temperature Increase" on page 106. 13