Tangential note that I thought was interesting: I have an eye condition called Keratoconus. It developed mostly on one eye before I had a procedure done to stop it from progressing, but my vision on that one eye is affected permanently.<p>People tend to wonder why I don't wear glasses, and I tell them it's because they don't really help since I don't "blurry", I see "smudged". It's as if you took a picture with a camera with long exposure and moved it, but not quite.<p>The pictures taken with this lens are a surprisingly good approximation of how I see with that one eye (perhaps sans the whitewash).