A stain feels like a pattern that isn't part of the pattern of color one finds on the rest of the material. The light is the buz when the camera is up and the threshold low, a light in the lense aperature will buzz the array. Nick On Mon, 1 Oct 2007 21:44:35 -0500, Lerae Olesen wrote: Hi all, Mark, you had a really extensive list of things to do with the Optacon. I concur with all of them, but wonder how you use it to tell if a light is on or off, and also about stains on clothing. How does that work? Lerae Olesen (please note spelling, pronounced LaRay Olson) To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject. To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.