From "The Andy Griffith Show: The Great Filling Station Robbery (#3.22)"
Gentlemen, I give you science in action. Proof-positive, the camera does not lie; it sees all, tells all. There is your criminal.
[lays down photograph; Andy and Gomer look at the photo, and then at Barney, who then looks at the photo
Well, that's me!
You take a real good picture, Barney. Me, I never do.