I used to get these sort of requests constantly while shooting at events. Folks wanted me to use their camera for the picture they wanted, or something like that. At first, I used to be very polite and try to help them out. Then I became a bit more sarcastic in my responses, like Jono's "P is for 'Professional'". Now I just go about my shooting business, trying to ignore them. If they keep interrupting, I politely tell them I am working for a client and need to get my shots, even if I am the client. They usually go away, but if they hang around, I either move away, or create enough of commotion that they are in the way, then politely ask them to move back/out of my way while I am working. That usually has them leaving. Like Jorgen, many of the new P&S cams have more tiny controls and no viewfinder, and as Terry mentioned, are set up totally incorrectly for shooting most times, that it wastes so much tlme and concentration to not be worth it. If I make the mistake and take their camera from them for a shot, I love holding my fingers in front of the lens (not on it) and then taking one or two shots, plus one or two of the ground while trying to "figure out" how things work, then one or two out of focus of them approaching me to get their camera back. They never ask again :ROTFL:
LJ
LJ