I'm in the market for a new (or used) digital camera. Probably a high-level point and shoot combo. I'm very left-handed and would love to have a left-handed camera but they don't seem to exist. Obviously on a tripod it's not an issue. And holding the camera upside down doesn't work for me. It's more difficult to press underneath with my thumb. Ideally I would like to use my left index finger. Do any left-handed (non-ambidextrous) photographers here have any suggestions?