The other night, I discovered detectable levels of schmutz on the lens of my newish point-and-shoot camera. It’s got a sensitive on/off switch and an unfortunate habit of sometimes opening the lens when it’s in my pocket. At least that’s how I think the lens got dirty. So I bought a lens cleaning kit and tried to clean it up. Then I went outside after dark to take a picture of some lighted subject–hey, that’s our porch–to see how much crud showed up on the display. Looks much cleaner than it did. Lens cleaning exercise: concluded.