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Chapter 4 Adjustments and Settings for Recording 4-13
4
Selectable shutter modes and speeds (continued)
Super
EVS
(Super
Enhanced
Vertical
Definition)
DVW-700 / 700WS : 1/60
sec. (automatic setting)
Improved vertical resolution.
Flicker is less than in standard
mode, but fast-moving objects are
more blurred.
DVW-700P / 700WSP :
1/50 sec.
(automatic setting)
Mode Shutter speed Application
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 and 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 strengths of each of
the R, G and B colors are actually changing in synchronization with the
frequency of the power supply (“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 is 60 Hz (with the
DVW-700 / 700WS) or 50 Hz (with the DVW-700P / 700WSP).
However, if the power frequency is 50 Hz (DVW-700 / 700WS) or 60
Hz (DVW-700P / 700WSP), setting the shutter speed to 1/100 or 1/60
can reduce this flicker.
• When a bright object is shot in ECS or Super EVS 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 CCD. Before using
ECS or Super EVS mode, check the shooting conditions.
• When using the electronic shutter, set FIELD / FRAME to FLD (field
accumulation mode) on the FUNCTION 2 / 2 page of the setup menu.