I am travelling to africa on safari later in the year. I want to ensure I have a good camera to capture what I hope to be a memorable holiday. I currently own a canon IXUS, 4 MegaPixel digital camera. I find the resolution as good as I will need and it is nice and slim for carrying on travel. However the major downside I have with this is optical zoom and to a lesser extend lens angle. I have 2GB of memory for this camera. In terms of photography I would class myself as a beginner and I would like to stick to digital. I'm undecided on whether I need to go and buy a more advanced camera with a greater optical zoom. Any opinions that may help me to decide whether I really need a new camera would be appreciated.