After seeing CO2 used in so many movies and shows as special effect, I thought of giving it a try myself to create a photo, so I went to a factory of industrial gasses and got a 10Kg bag of CO2 pellets.
The stuff is quite actually quite difficult to use. First the CO2 pellets sublimate continuously, so my stock of 10 kg was about the half after 1 evening in the fridge. Second, when poured into water to produce mist, the reaction is strong, but lasts just a few minutes. I was using warm water to get a strong reaction, but it froze quite quickly. Third, the mist is gone almost as fast as it’s produced.
Lesson learnt for next time:
- Buy more,
- Use it the same day,
- Use big can of water relative to the amount of CO2 pellets used,
- Work fast – prepare the idea, lights and the scene beforehand.
Lights: Used a simple 2-light setup: 600EX-RT bare behind the girl and a second 600EX-RT fitted in a Lastolite Stripbox.