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Meaning of "auto-focus"

dhmiller

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dhmiller Silver Member Donor Ribbon awarded for his support to the Fundraising Campaign 2014 Nikonian since 19th May 2009
Fri 03-Dec-10 09:17 PM

I suppose this deserves its own thread: can someone explain what is the expected behavior a propos "auto-focus" while shooting video?

I might be under a mistaken assumption but I am looking for a mode of operation similar to every video camera I have ever had where if I pan the camera, the new central image/object in the viewfinder automatically becomes the focal point and the camera refocuses so it is in focus. Is that possible with the D7000 or other DSLRs? Again, that is what I was hoping to accomplish with the camera.

If I am in Live Mode and recording with AF-F enabled, if I press the shutter half way to focus, then the camera will maintain focus at the initial distance as I move to new subjects elsewhere. But those new subjects immediately appear out of focus in the viewfinder and I have to repress the shutter half way to achieve a new focus on those new objects, which can take a second or more. The camera never refocuses by itself. That isn't what I would call "auto focus," but again, I may have the completely wrong idea about the potential here. Feel free to set me straight!


Dennis

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