Hi there, I have a D7000 that has been used mostly for photos. Now, I have a need to use it for videos.
After doing some tests, I am finding it hard to use the auto focus when in Live View/Video mode.
I have AF on the camera, AF on the lens, and I even went to the camera menu and changed the Single Servo focus to Full Time Servo.
I Changed "Face Priority" to Wide, then Narrow, but still got bad focus.
I am taking videos of construction sites, so I will be zooming in and out and there will NOT usually be any faces to focus in on.
What I am experiencing is that sometimes, the camera will find a good focus. Then, when I change the zoom, the focus gets waaaaaaaay out of wack. Sometimes the camera does nothing focus-wise. Sometimes I can hear the servo working constantly, but the image gets more blurry rather than clearer.
Sometimes, especially when I zoom IN, I can hear the servo go active A LOT, and never stop. The focus goes completely the wrong way and you can't make out anything in Live View. The focus seems to get stuck in some sort of servo-feedback loop and keeps making noise until I stop and try again.
I've had better luck when changing to Face-Priority mode, and when I can get a straight-on shot of someone's face. The focus icon changes to a yellow square as it locks on a face.
Back to Wide or Narrow focus, the focus square changes back and forth from red to green (mostly red). I've tried zooming slowly and quickly and can't get it figured out.
I am so-so at photography, but new to videography. Maybe I just have some simple settings wrong and I'm an idiot! Maybe the D7000 is a bad camera to expect decent video from.
Any ideas and help would be very much appreciated!
PS-I updated the firmware a while ago, but haven't checked in a while. But I can't imagine there is some huge firmware bug out there hurting people's videos.
PPS-I am using a Nikkor kit lens so I don't think it's a weird compatibility issue between lens and camera.
Thanks and take care!