How To Shoot A Liquid Flow – DIY Photography
— Read on www.diyphotography.net/how-to-shoot-a-liquid-flow/

Having tried to help a student with a similar idea few years ago and had mixed results I’m scouring the internet for tips.

I am going to experiment with the viscosity of the pigment and water (or other colourless medium) to see what works best for cosmic effects.

The tip on here about checking focus with a ruler is simple but I’m not sure I would have thought of it to solve that problem.