Sorry, I don't know how to describe it. I can't take a picture either. I just noticed a sorta spot on my MacBook. Like when you touch it that it leaves a bit of a mark. At first I thought that was just it, but it won't come off with anything. Sorry if I'm not being too specific, it's just really hard to describe. Has this happened to anyone? It's not a dead-pixel, does a blur-pixel exist?