How to set up back button focusing using the Nikon D3100.Ive had many requests on how to do this, and its really very simple.BBF is great for sports and action photographers,it allows you to keep focusing whilst shooting, seperates exposure and focus, VR and focus and many other benefits.Its not for everyone, but give it a try.To change back to the normal method, just go back into menu and the buttons settings, and change AE-L/AF-L back to that setting.Find me on..Google : http://gplus.to/PhotoixFacebook: http://www.facebook.com/PhotoixTwitter: http://twitter.com/photoixWeb: http://www.photoix.co.uk Nikon and DSLR camera tutorials, guides and reviews. If you need help using your Nikon Dslr camera, then I will guide you through learning the controls and functions. I will also explain the fundamentals of photography such as ISO, aperture and Shutter speed. Want to learn how to use manual mode on your camera, I will explain how to set a correct exposure using your camera's exposure meter and mode dial.

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