The Canon 5D Mark III has enough shooting modes for photographers of all experience levels. For point-and-shoot photography, set the camera to Scene Intelligent Auto mode and let the camera handle most of the work for you. Choose an advanced shooting mode (P, Av, Tv, M, B, or a Custom mode) to take more control for yourself.

This table gives you some information on each mode:

Name Description
Scene Intelligent Auto The 5D Mark III's fully automatic shooting mode. Use it to turn control over to the camera. Great for when you're learning about your camera and photography or when you need to transfer the workload to the camera so that you can relax and have fun.
P (Program AE) Think of Program AE (AE stands for auto exposure) mode as a bridge between Scene Intelligent Auto and the more manual shooting modes. Although the camera determines the exposure settings, you have much more control over different functions, such as the AF mode, metering, and so forth. You can also shift the program by changing which combination of aperture and shutter speed the camera uses in a given situation.
Tv (Shutter-Priority AE) In this mode, you set the shutter speed and the camera works around that setting to get the right exposure. In all other aspects, the camera is under your full control. Good for sports, action, and when you are moving.
Av (Aperture-Priority AE) This mode is similar to the Tv Shooting mode except that you set the aperture. Good for portraits, landscapes, and close-ups.
M (Manual exposure) You are responsible for all exposure settings.
B (Bulb) This special shooting mode (known as Bulb) opens the shutter for as long as you hold the Shutter button down.
C1-C3 These are Custom Shooting modes. They enable you to save camera settings in any of the three dial positions for recall later.