Brilliant DG40 is a high power slave flash for DSLRs. It has a high precision CPU controller which controls the power output accurately. The power can be manually controlled from full power (1/1) to the lowest (1/128).

The guide number of this flash is 46 (ISO100, m) at 105mm zoom and the zoom range can be adjusted from 24mm to 105mm. This is the first slave flash with such wide zoom and high power, giving tremendous flexibility in lens choices and creative usage. The flash can be triggered by either camera hotshoe or through its optical sensor.