Canon Community

I have a Canon 70-200F4 IS USM which I purchased in 2007. The focusing is acting up and Iwould like to send it in for repair. But when I call and say my model number she keeps asking what is that I need repaired, a camera, printer, etc. Never mention...

My 40D will not focus with the center point or the top three other points. The other focus points work fine. The confirmation light in the view finder (when using the 4 bad focusing points) just keeps flashing and never confirms focus. The other focu...