Small and lightweight, this Photographic Trigonal Prism Crystal from ANDYCINE is a prism that splits a beam of light into its spectral components or colors of the rainbow to create eye-catching effects. There are a couple of ways to use the crystal. Since it has 1/4"-20 female threads, you can attach it to a small tripod or stand and shine light through it to splash color around the room. Another method is mounting it onto an accessory such as a Magic Arm to hold it in front of your lens to digitally capture the colorful effects and image breakup. Each crystal's shape determines its output. This Trigonal Crystal has three angles.