My C700UZ have this function too. It's called bracketing. Maybe some other photography experts here can give better explanation, but in short, this function lets you take 3 successive shots at different exposures values.
In BKT mode, you need to press and hold the shutter release button for a while until the 3 shots are over.
:bsmilie: hehe, from the way I explain this I think the experts know I'm not very knowledgeable.
Kevin, you are quite correct. Sometimes you may have doubts about the exposure and you like to take images at different exposure settings. Bracketing just simplify the job. Set up the tripod and for my camera, the differences in the exposure in the shots and just snap. The camera will automatically adjust shots with exposure above and below the one indicated by the meter. My camera will need me to trip the shutter for every shot tho.