Setting The Electronic Shutter; Shutter Modes - Sony PDW-850 Operation Manual

Setting the Electronic
Shutter

Shutter modes

The shutter modes that can be used with the
electronic shutter and the shutter speeds that can
be selected are listed below.
Standard mode
Select this mode for shooting fast-moving
subjects with little blurring.
SYSTEM System
LINE setting frequency
1080 59.94i
50i
29.97P
25P
23.98P
720 59.94P
50P
a) This speed cannot be selected when the unit is in Slow
& Quick Motion mode and FRAME RATE on the
REC FUNCTION page of the OPERATION menu is
set to a value that is greater than the system frequency.
ECS (Extended Clear Scan) mode
Select this mode for obtaining images with no
horizontal bands of noise when shooting subjects
such as monitor screens.
60

Setting the Electronic Shutter

Shutter speed (unit:
seconds)
1 1 1
/ , / , / ,
100 125 250
1 1 1
/ , / , /
500 1000 2000
1 1 1
/ , / , / ,
60 125 250
1 1 1
/ , / , /
500 1000 2000
1 a) 1 1
/ , / , / ,
40 60 120
1 1 1
/ , / , / ,
125 250 500
1 1
/ , /
1000 2000
1 a) 1 1
/ , / , / ,
33 50 100
1 1 1
/ , / , / ,
125 250 500
1 1
/ , /
1000 2000
1 a) 1 1 1
/ , / , / , / ,
32 48 50 60
1 1 1
/ , / , / ,
96 125 250
1 1 1
/ , / , /
500 1000 2000
1 1 1
/ , / , / ,
100 125 250
1 1 1
/ , / , /
500 1000 2000
1 1 1
/ , / , / ,
60 125 250
1 1 1
/ , / , /
500 1000 2000
SYSTEM System
LINE setting frequency
1080 59.94i
50i
a)
29.97P
a)
25P
a)
23.98P
720 59.94P
50P
a) When the unit is in Slow & Quick Motion mode and
FRAME RATE on the REC FUNCTION page of the
OPERATION menu is set to a value that is greater
than the system frequency, the lower limits for shutter
speed settings are as shown below.
29.97P: 60.00Hz
25P: 50.00Hz
23.98P: 48.00Hz
SLS (slow speed shutter) mode
Select this mode for shooting subjects in low level
lighting conditions.
SYSTEM LINE Shutter speed (unit:
setting frames)
1080 2, 3, 4, 5, 6, 7, 8, 16
720 2, 4, 6, 8, 16
Notes
• Whatever the operating mode of the electronic shutter,
the sensitivity of the CCD decreases with increasing
shutter speed.
• When the automatic iris is used, the iris opens wider as
the shutter speed increases, thus reducing the depth of
field.
• Under artificial light, particularly fluorescent or
mercury lamps, the light intensity may appear to be
constant, but the red, green, and blue intensities are
actually changing in synchronization with the
frequency of the power supply causing flicker. Using
an electronic shutter under such lighting could make
the flicker even worse. Color flicker is particularly
likely to happen when the power supply frequency is
60 Hz. However, if the power frequency is 50 Hz,
setting the shutter speed to
• When a bright object is shot in ECS mode in such a
manner that it fills the screen, the upper edge of the
picture may have poor quality because of an inherent
characteristic of CCDs. Before using ECS mode, check
the shooting conditions.
• The selectable shutter speeds vary depending on the
current system frequency.
• In SLS mode, white flecks are more prominent when
you set the shutter speed (number of frames) to higher
values.
Executing the APR(SLS) function on the APR page
Shutter speed
(unit: Hz)
60.00 to 4300
50.00 to 4700
30.00 to 2700
25.00 to 2300
24.00 to 2200
60.00 to 4300
50.00 to 4700
1
/ can reduce this flicker.
100