I love my D7000,,,,,,,,,but!
I have had my camera for about a year and love it. Recently I decided to look at the video recording side of things which again, the camera does very well. My 'but' is this. The video records the horrible grinding noise of the auto focus motor, to a degree where any original sound track is useless. I set it to AF-F and it is unusable.
Is this a common complaint when using auto focus in video mode or is there something wrong with my machine?
This is a common problem with DSLR as the microphone records all the noice of the focus motor.
I have this sound recorder to record the sound external (distance to the camera) and syncronize it with the video in post:
I've also learned to focus manually as the auto-focus in live view is nearly not useable for video.
My D600 records clicking sounds, +/or metal on metal soft screech when auto focusing in video with onboard microphone.
Manual focus pretty easy in live view, as is zooming.
Another trick is to use smaller aperture and wider DoF. I try to shoot video at f/11 to f/16. Works well filming my daughter running around.
Downside. Dust on sensor shows up in video with smaller aperture. Might not be as cinematic with shallow DoF.
That's a good idea. I will give it a try...