White Balance - Sony EVI-HD7V Technical Manual

White Balance

White Balance has the following modes, all of which
can be set using VISCA Commands.
• Auto White Balance
This mode computes the white balance value output
using color information from the entire screen. It
outputs the proper value using the color temperature
radiating from a black subject based on a range of
values from 3,000 to 7,500 K.
This mode is the default setting.
• Indoor
3,200 K Base Mode
• Outdoor
5,800 K Base Mode
• One Push WB
The One Push White Balance mode is a fixed white
balance mode that may be automatically readjusted
only at the request of the user (One Push Trigger),
assuming that a white subject, in correct lighting
conditions and occupying more than
is captured by to the camera.
One Push White Balance data is lost when the power
is turned off. If the power is turned off, reset the One
Push White Balance.
• Manual WB
Manual control of R and B gain, 256 steps each
Automatic Exposure Mode
The variety of AE functions, which allow video signal
to output the optimum image for subjects from low
light conditions to bright light conditions, are
available.
• Full Auto
Auto Iris and Gain, Fixed Shutter Speed (59.94/
1 1
29.97: / s, 50/25: / s)
60 50
• Shutter Priority 1)
Variable Shutter Speed, Auto Iris and Gain
1 1 1
( / or / to / s, 21 steps, high speed shutter: 15
60 50 10,000
steps, slow shutter: 6 steps)
• Iris Priority
Variable Iris (F1.8 to Close, 18 steps), Auto Gain and
Shutter speed.
• Manual
Variable Shutter, Iris and Gain.
• Bright
Variable Iris and Gain (Close to F1.8, 18 steps at
0 dB: F1.8, 6 steps from 0 to 18 dB)
.................................................................................................................................................................................................................................
1) Flicker can be eliminated by setting shutter to:
t 1 / s for 59.94/29.97 models used in countries with a 50 Hz power
100
supply frequency.
• Spot light
Avoids a situation where the face of the subject is
over-illuminated, and becomes whitish.
AE – Shutter Priority
In high speed mode, the shutter speed can be set up to
1
/
10,000
according to the brightness of the subject.
1
/ of the image,
2
Note
When the low shutter speed is used, Auto Focus and
White Balance may not function fully.
t
s. The iris and gain are set automatically,
Parameter 59.94/29.97
[sec]
15 1/10,000
14 1/6,000
13 1/4,000
12 1/3,000
11 1/2,000
10 1/1,500
0F 1/1,000
0E 1/725
0D 1/500
0C 1/350
0B 1/250
0A 1/180
09 1/125
08 1/100
07 1/90
06 1/60
1
/ s for 50/25 models used in countries with a 60 Hz power supply
120
frequency.
Basic Functions
50/25
[sec]
1/10,000
1/6,000
1/3,500
1/2,500
1/1,750
1/1,250
1/1,000
1/600
1/425
1/300
1/215
1/150
1/120
1/100
1/75
1/50
9