#7. "RE: D5100 Apperture Behavior in Video Mode" In response to In response to 6
Here is a photo of my D5100. The lens is an AFS 35mm f1.8G. The camera is in Aperture priority mode and the lens is set to f22. The camera has Liveview on and is recording a movie in Movie mode. As you can see the lens is stopped down while recording.