Rings! Actually a single collision of two drops, two flashes 10 milliseconds apart.

[Chavezshutter]

Thats awesome, you are getting very nice results in a short period, well done. Cool colours. Slowish shutter? Flash? Interesting results, great job creating the shapes.

 

[oscar118]

Hello. I used slow shutter speed (1/16) and flash set to fire twice at maximum frequency (100 Hz). So it is really a double exposure. The "hat" fell down to the "waist" in 10 ms.

 

[Craigo79]

Nice stroboscopic water droplet image