I've seen some fantastic splash/drops photography and just started playing around with it. I'm not so much interested in the collision photography, but instead just capturing the splash or crown for now. I've been using milk with glycerin in it. Not sure what ratio is best. I shoot in the basement (very dark) on a piece of glass painted black, with black foam boards on each side and the back. I'm suing a Canon 70D and Canon 100mm Macro lens.
One problem I'm having is trying to time when the drop is going to hit. I'm lucky to get 1 out of 50 that works. Just yesterday I found that a trigger helps with this (had never heard of them before). The one I'm looking at is the Cactus Laser LV5. Anyone suggest or recommend a different one? If you are dropping the liquid from 12 inches, for example, and the laser is set up at 6 inches, is it hard to calibrate so that the trigger fires when the drop hits the surface (i.e. at 0 inches)?
My current lighting setup is a Speedlite 430 flash fired remotely using the camera's built in flash as the master. I also have another Speedlite 430 coming in a few days. One thing I don't understand is that I am currently getting trails on all the droplets. I'm using ETTL with camera set at max sync speed of 1/250 second. Why don't I get better "motion stopping" from the flash?
I'm also getting a gray rather than black background but don't want my DOF any shallower. I'm just now thinking that my flash needs to point more from the sides than the front?
That's about as far as I am. Any additional hints/advice would also be appreciated.