Messing around with ink in a glass of water. This ink had almost dried out and was so thick that it would sit on the surface of the water until it had absorbed enough moisture to dissolve.
The day I bought the TLR camera I ran through a film to see whether the camera focussed properly, fired flashes, had a true exposure and so on. Not having a model, I used the closest thing to hand...
Red gels, green and blue paint, studio flash-heads.
The setup was fairly straightforward, though the shininess of the wet paint was actually quite difficult to photograph without throwing too many harsh highlights:
snooted flash from 10 o'clock for "rim"
big shoot-through umbrella around 2 o'clock for "fill"
red-gelled flash pointing backwards to a white foam-core sheet for the background
wires, radio triggers and optical slaves for syncing the flashes to the camera
