[Webslow]

I'm venting. I sold my Canon 30D with all the filters, extra batteries, etc. The camera was serviced last year and the built in flash was replaced. The camera sold for about $20 more than it cost me for the service. I figure that I didn't need it anymore, so I cut my losses. Problem is the buyer contacted me after he got the camera and said the lens would not stay on focus. I don't remember the terminology. He sent it back. I attached the lens to the camera as soon as it arrived and sure enough it moves back and forth very quickly without focusing. It's never done that before, and didn't do it when I checked it out before shipping it. The person that bought it has an address that lets me believe he is in the camera business. Don't know if he buys and sells cameras, or is a photographer or what. I can't help but wonder if this was a trick to switch my lens for a bad one he had. Too bad the lens doesn't have a serial number on it. I'm thinking of putting a hidden mark on things I sell so that if it comes back because it no longer works, I will know if it was the one I shipped or not. Thoughts!