Bests & Worsts Reviews from Amazon

For less than $10, every photographer should have one of these. The edge feels like a thin neoprene or lycra. The internal spring seems very strong and durable. The calibrated surface seems to be waterproof and is easily cleanable. The storage pouch is the perfect size. It's even got a loop on one end, so that you can hang it on something, so you don't need to hold it out in front of the camera. Well worth it. I took a quick set of sample shots in a poorly lit (several cheap CFL lights), messy room, showing Before and After setting custom white balance, using this product.