From the course: Canon 5D Mark III Essential Training

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Exploring focus modes

Exploring focus modes - 5D Tutorial

From the course: Canon 5D Mark III Essential Training

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Exploring focus modes

Your camera's default autofocus system is very good, and should be able to provide you with accurate focus for most of the subjects that you shoot. However, focusing is a complex process. Your camera's autofocus can be stymied by low light situations, moving subjects, solid colors, and more. For that reason, the camera includes several different focus modes. Your Mark III has three different focusing modes that change a little bit of the behavior of how the autofocus system works. By default, you'll be in One Shot mode, unless you are shooting in Scene Intelligent Auto mode. The rest of the modes default to One Shot mode. This is pretty much probably how you expect autofocus to work. You half-press the shutter button, the camera calculates focus, and then locks focus, beeps; shows you your focus lock indicator in the viewfinder. If you press the AF-Drive button, and then turn the main dial, you can see the other two modes: AI Focus, and AI Servo. AI Servo also tries to find focus when…

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