Filter
Top Products
4
Chapter 4 Adjustments and Settings for Recording 4-13
Mode
EVS
a)
(Enhanced
Vertical
definition
System)
a) For an HDW-750P, operating with the 25PsF format, this function is not
available.
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 frequency is 60 Hz
(with the 59.94I format) or 50 Hz (with the 50I format). However, if
the power frequency is 50 Hz (with the 59.94I format) or 60Hz (50I
format), setting the shutter speed to 1/100 or 1/60 can reduce this
flicker.
• When a bright object is shot in EVS mode or 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 CCD. Before using
EVS mode or ECS mode, check the shooting conditions.
You can turn on or off the EVS mode on the SW STATUS page of the
PAINT menu.
Shutter speed
HDW-730 (59.94I format)/
HDW-750: 1/60 sec. (fixed)
HDW-730 (50I format)/
HDW-750P (50I fomrat):
1/50 sec. (fixed)
Application
Improved vertical
resolution. However, the
sensitivity and dynamic
range are reduced.