Hi there all. It has been quite sometime since the last post, I ll blame the hectic work schedules and in some effect, laziness for the same.
Anyway, today we discuss, Dry Ice. Frozen Carbon Dioxide, when made into pellets to be used for cooling duty, is known as Dry Ice.

Dry Ice is of interest to us photographers since it produces thick smoke, when it comes in contact with water.
And the best bit, the smoke is cold, and heavier than air, so it flows!
This gives the opportunity to use the flowing smoke creatively. It can be used to provide artificial smoke in photos, to be used to as a background or otherwise.
So, there you have it, the secret to thick billowing smoke in the photos. Have fun it. Be careful though, it is carbon dioxide, so, preferably do not inhale a lot of it, and experiment in an open space.
Cheers!!