Photo Plus - - A-Z Guide -

A burst of ar­ti­fi­cial light used to pro­vide all or some of the il­lu­mi­na­tion for an im­age. Most cam­eras have built-in flash units, while some al­low a sep­a­rate flash unit to be at­tached via the hot­shoe, or used off-cam­era. In stu­dio work, large

stand­alone flash units or strobes use mains power, and are trig­gered by a flash sync ca­ble or ra­dio sig­nal. Flash du­ra­tions are usu­ally be­tween 1/200 to 1/1000 sec and have a colour tem­per­a­ture of around 5,500-6,000k.

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