Time-Lapse Video (Interval Rec Function) - Sony PDW-850 Operation Manual

The Picture Cache mode settings once made
continue to be effective until changed.
You can assign the Picture Cache on/off function
to one of the ASSIGN 1/2/3/4/5 switches or RET
button on the lens.
For details, see "Assigning functions to ASSIGN
switches" (page 209).
Notes
• You can do a menu operation to change the Picture
Cache time while the camcorder is in recording mode.
However, the new setting takes effect only after the
recording is finished.
• In Picture Cache mode, the internal timecode generator
operating mode is always F-RUN regardless of the
setting of the F-RUN/SET/R-RUN switch.
Camcorder operations in Picture Cache mode
The recording procedure in Picture Cache mode
is basically the same as that for normal recording.
However, note the following differences.
• When you record in Picture Cache mode, the
picture you are shooting now is recorded to disc
after the picture data stored in memory (equal to
the Picture Cache time) is recorded to disc. For
this reason, disc access may continue for a short
time after you press the REC START button to
stop recording. During this time, the playback
control buttons are disabled, as in recording
mode. Also, if you press the REC START
button or the VTR button on the lens to restart
recording during this time, a separate clip is
recorded.
• When you press the REC START button or the
VTR button on the lens to restart recording
during disc access, the start point of the
recorded clip may be later than the Picture
Cache time, especially when there are a large
number of clips recorded on the disc. In Picture
Cache mode, you should avoid stop and start
recording operations in quick succession.
• The time disc access stops after the REC
START button is pressed equals the Picture
Cache time. However, if you start recording
within the Picture Cache time immediately after
selecting Picture Cache mode, changing the
Picture Cache time or performing playback or
recording review, the picture data for the
duration of the Picture Cache time will not be
stored in memory. Thus, the time disc access
stops after the STOP button is pressed becomes
shorter than the Picture Cache time.
• In Picture Cache mode, you cannot set the F-
RUN/SET/R-RUN switch to SET to make
84 Advanced Operations for Shooting
timecode settings. To make timecode settings,
first exit Picture Cache mode.
When power is lost during recording in Picture
Cache mode
• If the POWER switch is turned off during
recording in Picture Cache mode, the
camcorder gets powered off after disc access
has continued for a few seconds so that the
picture at the moment when the POWER switch
is turned off is recorded.
• If you remove the battery, pull out the DC cable,
or cut power to the AC adaptor during recording
in Picture Cache mode, video and audio stored
in memory will be lost without being recorded
to the disc. For this reason, make sure you do
not replace the battery while recording.
Time-lapse video (Interval Rec
function)
Using the memory in the camcorder, you can
capture time-lapse video. There are two modes
for this function, which is known as "Interval
Rec".
Auto Interval Rec mode: In Auto Interval Rec
mode, pictures are automatically shot a frame
(two frames when the recording format is set
to 720p) at a time at the specified interval and
stored in memory. To use this function, you
must set the total time for shooting (TAKE
TOTAL TIME) and the length of time for
recording on the disc (REC TIME).
Manual Interval Rec mode: A specified number
of frames (NUMBER OF FRAME) is
recorded when you press the REC START
button or the lens VTR button.
There are two Manual Interval Rec modes: a
single shot mode in which recording is done
once with each press of the button, and a
consecutive mode in which recording is done
repeatedly at a specified interval after the
button is pressed.
A pre-lighting function is available in Auto
Interval Rec mode and the consecutive mode of
Manual Interval Rec mode. This function
automatically turns on the light before recording
starts, which allows you to record pictures under
stable light and color temperature conditions.