So I've been trying to learn how to create my own hdri images. I also wanted to learn how the mental ray rayswitch node works. Really cool stuff. Though I'm one of those guys that easily forgets the set up of these nodes heh. These are some renders I did of the crayfish character I did awhile back. Using a photo I took and hdri I did using my canon eos 400d, an umbrella and a chair with wheels(yes I need a decent tripod and pan head).