If I want to do long-exposure photos in which I trigger the flash multiple times to freeze objects in the frame I know I can use the test button of the flash to trigger it manually.
But if I want to be in the frame myself, how can I trigger a flash manually and from a distance during a long-exposure?
Does an off-the-shelf solution exist, or is the only option to wire something together by myself? A solution that ensures the flash gets triggered every
x seconds would suffice as well.
I have a Canon 550D, two Cactus V5 transceivers, and an old Starblitz BTZ-2000 flash.