Interested in purchasing this camera, may anyone help about the following subjects:

1. Does the manual focusing allow the camera to choose, for example, the infinity (∞) position?

2. Does the MANUAL dial allow a continuous setting of exposure while a panning record when the illumination conditions change?

3. Is it possible to record or playback without the battery inserted in the camera and using only the power cord or mains lead attached to the DC IN jack?

Thanks for the help!