Fre­quency and hertz

Photo Plus - - Canon Skills -

Hertz is a generic unit of fre­quency that tells us how of­ten some­thing will hap­pen. in this case it lets us know how many times the flash will fire in one sec­ond. so at 1Hz it fires once per sec­ond, at 10Hz 10 flashes per sec­ond. Many flashes will also have a flash count set­ting that lets us de­ter­mine the to­tal num­ber of flashes. We can di­vide the flash count by the hertz to come up with the cor­rect shut­ter speed for our flashes. for ex­am­ple, if the flash count is 10 and the Hertz is 20, we know we’ll get 10 flashes in half a sec­ond.

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