AF-On button D5200 - BBF?
Ok I've figured how to set the "AE-AF Lock" button on D5200 to behave as a dedicated "AF-On" button (ie BBF - back button focus instead of shutter release half press). And spent some time using it.
BUT I fail to see how BBF is more useable than 1/2 SR button. It's quite awkward and requires using two physical inputs instead of one. It would seem a awkward for sports action where the subject keeps moving the focal plane. Obviously there is value and benefit to BBF but could somebody please explain what situations it might be better than 1/2 SR for focusing. In some reviews the presence of a dedicated AF-On button is usually praised. Thanks in advance.
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