As you take pictures of smartly dressed guests and fancy dishes, don't ignore the lighting, which can be tricky--especially if you're shooting a late-day dinner with sunlight streaming through the window, room lights on, and perhaps even some candles competing for your camera sensor's attention. Trust the camera, and your photos are likely to come out with an ugly color cast. To avoid such problems, you'll want to use a white sheet of paper to set the white balance manually before you start shooting. Check your camera's user guide for instructions on how to adjust white balance. And rather than relying on the camera's flash, try increasing the camera's ISO to 400 so you can properly expose your pictures indoors.