Sony HDR-PJ790V "Handycam User Manual page 250

The actual recording time for movies is less than the expected recording time of the
recording media.
Depending on the recording conditions, the time available for recording may be shorter, for example
when recording a fast moving object, etc.
The camcorder stops operating.
If you keep applying vibration on the camcorder, recording may stop.
There is a slight time lag between the moment when START/STOP is pressed and the
actual movie recording starts or stops.
On your camcorder, there may be a slight time difference between the moment when you press
START/STOP and when the actual movie recording starts/stops. This is not a malfunction.
The horizontal to vertical ratio of the movie (16:9 (wide)/4:3) cannot be changed.
The horizontal to vertical ratio of high definition image quality (HD) movies and MP4 movies are 16:9
(wide).
The auto focus does not function.
Set [Focus] to [Auto]. [Details]
The recording conditions are not suitable for auto focus. Adjust the focus manually.
SteadyShot does not function.
Set [ SteadyShot] to [Active] or [Standard] [Details], [
Even if [ SteadyShot] is set to [Active] or [Standard], [
not be able to compensate for excessive vibrations.
Set [Conversion Lens] to [Off].
Images cannot be recorded or played back correctly.
If you record and delete images repeatedly for a long time, the files on the recording media may
become fragmented and images cannot be recorded or played back correctly. After backing up the
images on other media, format the recording media on your camcorder.
The subjects passing across the camcorder very fast appear crooked.
This is called the focal plane phenomenon. This is not a malfunction. Because of the way the image
device (CMOS sensor) reads out image signals, the subjects passing by the lens rapidly might
appear crooked depending on the recording conditions.
The color of the image is not correctly displayed.
Press NIGHTSHOT to cancel the NightShot function.
The screen image is bright, and the subject does not appear on the screen.
Press NIGHTSHOT to cancel the NightShot function.
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SteadyShot] to [On] [Details].
SteadyShot] to [On], your camcorder may
[Details]
[Details]
[Details]
[Details]