wilbur wrote:
If I take a picture of someone's reflection in a mirror, using auto in my g12 , is the camera focusing on the surface of the mirror or is it focusing on the reflected subject which is 10' away from the mirror ?
If I'm not expressing this correctly , someone that understands my poorly posted question, please restate it so it can be answered. Thanks. Wilbur
Notnobudda, wrong! wrong! wrong! A good mirror is esentually invisible. The light from the subject travels from the subject to the mirror to the camera. The total distance is what you need to focus on not the distance to the mirror.
A 10 second test to prove this. Tape a piece of newspaper or similiar item to the mirror surface (actually you can even use the mirror frame if it has enough detail to focus on). Get as close to the mirror as you can and still focus on the newspaper (2 or 3 feet). Now look over your shoulder at something across the room. Is it in focus? No. If the mirror image was on the mirror surface it should be in focus just as the newspaper is, they are the same distance. If your camera focuses on the mirror surface, you need to clean the mirror. High school Physics.