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Message: <blockquote data-quote="nickt" data-source="post: 615312" data-attributes="member: 4923"><p>Yes and no. You can set the back button to af-on and use it to initiate focus, but I think the D50 does not have a way to set release priority. You need release priority to get the 'full deal' from bbf. That full deal being the ability to focus and recompose. Some people don't want that anyway, they want to be sure they have focus before the shutter can release. The focus recompose is a little than what you do with holding the shutter button at half. With bbf, you can prefocus, set the camera down, take a break, or whatever and take your shot later, recomposing if needed. No need to hold anything like the shutter half press. If your camera doesn't have release priority, you can't do that. When you finally take the shot, if the camera does not see focus at the focus point, it won't be able to fire.</p></blockquote><p></p>