Playing with light.
Many photographers use big soft boxes and flat lighting setups for the simple reason, they are easy, and always work.

However photography is painting with light, and telling stories with the images, the old masters played with light and controlled it to get the results they want. They made the light do what they want it to do, like an inverse mask of Zorro and a striking and well-placed shadows.

And this all without with the help from modern gear, photoshop and big soft boxes.

They controlled their lighting with flags and proper placement, and when you master this, a whole world of awesome setups/results will open.

But it’s not only the light use.
This video is also about creative use of lenses and other techniques to really spice up your photography and mix the old masters with a modern twist.