Okay, not quite a lens. My dad recently got his hands on a couple of older-model projectors, the big ones for big events. We were looking over them, and I happened to look inside one that didn't have its lens installed, and this little rainbow is what I saw at the end. I would imagine it's from a combination of mirrors and prisms that the machine uses, but I don't really know the precise mechanics in this circumstance. I just had to get a picture of it. I mean… it's hard to explain why, but it just strikes a chord with me. And it's pretty. I'm actually amazed at how well this picture turned out.