This is the first image I've taken with my new flash trigger. It allows me to
just open the shutter in a dark environment and when the water drop breaks the
IR light beam it triggers the flash. I just have to set the delay for the correct
time until the drop hits the water.

I'm also using an old manual flash I had from my 35mm days, so I had to play with
aperture a little to find out what the correct setting was going to be.