Working with fractal prism filters

On a recent outing, I spotted a friend placing these strange bits of glass in front of his camera while photographing butterflies. Ever curious I asked him what they were, what they do and how to use them. I was quickly introduced into the world of fractal prism filters.

I was astounded at the results, granted I only played with two of the three he had in his kit, but instantly fell in love with these cool little filters. Holding them by hand, I found that I could maneuver the filter in front of the lens, but you could place a connector to your camera and hold the filter in front of the lens.