https://visualeducation.com/class/shooting-liquid-bubbles/

• Bubble shots are great for advertising campaigns (such as the famous O2 bubbles) as well as for wall art. The principles and techniques are pretty straightforward once you know how to set up and execute the shot correctly –which is exactly what you’ll learn in this class.
• Using a single speedlight, Karl demonstrates how to shoot these artistic images using a simple setup that requires very little equipment. He explains the importance of having a fast flash duration to freeze movement, how create the right bubbles, and how you could get creative with this shot to make it your own.