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SHUTTER (electronic shutter)
The electronic shutter allows you to obtain blur-free
pictures of a fast moving subject, and if used combinedly
with a frame memory device, adequately bright pictures
of low-illuminated subjects.
Note that the SHUTTER function is effective only when
CCD IRIS is set to OFF.
OFF: for inactivating the electronic shutter.
STEP: for setting the shutter speed to one of the
following eight: FL, 1/125, 1/250, 1/500, 1/1000,
1/2000, 1/4000, and 1/10000 sec.
FL gives flickerless pictures. When using the DXC-930
with lighting power of 50 Hz or the DXC-930P, of 60
Hz, setting SHUTTER to FL gives you flickerless
pictures even under fluorescent light.
MANU:
for adjusting the shutter speed in units of frame
or horizontal scan cycle time (H) in the following rage.
DXC-930:
In units of frame
in units of H
In FLD mode*:
255 to 001
In FRM mode*: 256 to 002
vations paces
DXC-930P:
in units of frame
In units of H
In FLD mode*:
255 to 001
In FRM mode*: 256 to 002
310/625 to 1/625
* About FLD and FRM modes, see page 4-11 (E).
When SHUTTER is set to MANU, do not use the
AGC function or the white balancing function.
Adjusting the shutter speed in units of frame: for
example, if the setting is 050 (equivalent to about
1.7 seconds with DXC-930 and 2 seconds with
DXC-930P), the whole amount of video signal
accumulated during this set time will be output in
the form of one complete picture (or one still frame)
at intervals of about 1.7 seconds or 2 seconds
depending on the camera. These pictures, which
contain 50 frames of video information, are much
brighter than normal one-frame pictures, Therefore,
this mode of setting the shutter speed is very useful
for shooting a low-illuminance subject in a dark
place. You can make timing pulses for taking out still
pictures be output from the RGB/SYNC connector
by changing the setting of the internal SYNC switch
(see the figure). You can use this function advanta-
geously for image processing or image analysis by
synchronizing an external frame memory with the
timing pulses to take out still pictures.
Chapter
4
SYNC switch
Chapter 4 Changing Camera Settings for Better Picture
| 4-9 (E)
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