The Lensbaby Optic Kit is a tool box for fun. When you want to go super dreamy or rough and raw, pop out your sharp and crisp Double Glass and drop in Plastic. Want a vintage camera feel? Go for the Single Glass. When you want to get really trippy: Zone plate.Each Optic is available a la carte, or you can scoop up Plastic, Single Glass, and Pinhole / Zone plate all together in this Lensbaby Optic Kit. Compatible with the Composer, Muse, and Control Freak.