Sr Motion - Sony SR-R4 Operation Manual

SR Motion

SR Motion is a function that allows you to obtain
slow and quick motion effects by setting different
values for the number of frames at shooting time
and the number of frames in the recoded material
(number of frames at playback time and target
frame frequency). After shooting, you can
confirm (review) the motion effects on location
by changing the SYSTEM FORMAT setting.
Since only the required number of frames is
recorded, no format conversion is needed.
SR Motion has the following functions.
Function Features
Select FPS Provides slow and quick
motion effects.
Notes
• Audio is not recorded with SR Motion.
• SR Motion cannot synchronize two or more recorders,
even if TCG MODE is set to "Regen."
• The signal formats supported by the SR Motion
function have some restrictions.
• When using the SR Motion function, be sure to check
the version of the F65 docked to the unit. For details on
versions, contact a Sony service representative.
What is the target frame frequency?
Normally, the frame frequency of recorded
material is determined before shooting (for
example, it is usually set to 24 Hz for movies, and
29.97 Hz or 25 Hz for TV programming) and then
the recorded material is played back at that frame
frequency after shooting. In SR Motion, the pre-
determined number of frames of recorded
material per second is called the "target frame
frequency."
SR Motion enables motion effects to be achieved
by appropriately setting three variables: the
"target frame frequency," the "system frequency"
at shooting time, and the "number of frames shot"
at shooting time.
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SR Motion
Slow or quick motion effects can be obtained by
recording with a system frequency or number of
frames set to a value that is different from the
target frame frequency. On the other hand,
normal speed video can be obtained by recording
with the number of frames set to the same value
as the target frame frequency.
Reference
page 46