Sony ExwaveHAD DXC-390 Mode D'emploi page 18

Adjusting and Setting with Menus
Selection Function
VARIABLE Clear scan mode
(Continued) You can set the shutter speed in units of 1H (horizontal
scanning time: 63.56 µs).
Select SPEED, then select the value from 1/525H to
262/525H. This mode can be used for shooting
computer displays with reduced horizontal bands
appearing across the display screen.
To set the shutter speed
1 Display OFF by pressing the
simultaneously.
2 Select the SPEED value by pressing the
while observing the noise on the monitor screen so
that you can obtain the image with minimum noise.
Each time you press the button, the value changes in
units of 1H.
To convert the value into the shutter speed
Example: When the value is set to 250H
250  63.56 µs (1H) + 34.9 µs (constant)
= 15924.9 µs = Approx. 0.016 seconds
CCD-IRIS Automatically adjusts the luminance level for optimum
output level. When incoming light is excessive, this
function automatically adjusts the shutter speed to cut
exposure equivalent to up to 10 aperture stops.
18
(GB) Chapter 2 Operation
Selection
CCD-IRIS
(Continued)
 
and buttons

button
LENS
Selects the iris mode.
Selection
VIDEO
REMOTE
Function
For example, this function is useful for microscope
applications. When shooting with a microscope not
equipped with the auto-iris lens, the luminance level
that is just right for the human eye is often too bright
for the video camera.
When CCD-IRIS is selected, the electronic shutter
automatically decreases excessive incident light to an
appropriate level for the video camera. This function is
also useful for cutting out excessive incident light that is
not cut out by the auto-iris lens in scenes containing
very bright patches (such as snow, or sea water
reflecting sunlight).
You can select the highest limit value of the variable
range of the shutter speed. Select LIMIT, then set the
speed to 1/250, 1/500, 1/1000, 1/2000, 1/4000, 1/10000,
1/20000,1/40000 or 1/100000.
Note
You cannot use CCD-IRIS mode when using a lens that
automatically adjusts the iris control according to the
video signal input.
Function
Select when you use a lens that automatically adjusts
the iris according to the input video signal.
Select AE LEVEL, then adjust the auto exposure focusing
point in the range from –127 to +127.
Select when you use a lens that adjusts the iris
according to the DC power supplied.