White Balance; Automatic Exposure Mode - Sony fcb-ev7500 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 2500K to 7500K.
This mode is the factory setting.
• ATW
Auto Tracing White balance (2000K to 10000K)
• Indoor
3200K Base Mode
• Outdoor
5800K 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 1/2 of the
image, is submitted to the camera.
One Push White Balance data is lost when the power
is turned off. If the power is turned off, reset One
Push White Balance.
• Manual WB
Manual control of R and B gain, 256 steps each
• Outdoor Auto
This is an auto white balance mode specifically for
outdoors. It allows you to capture images with natural
white balance in the morning and evening.
• Sodium Vapor Lamp Auto
This is an auto white balance mode that is compatible
with sodium vapor lamps.
• Sodium Vapor Lamp
This is a fixed white balance mode specifically for
sodium vapor lamps.
• Sodium Vapor Lamp Outdoor Auto
This is an auto white balance mode specifically for
outdoors, which is compatible with sodium vapor
lamps.
Note
High-pressure sodium lamps are supported. Proper
white balance may not be captured for some subjects
when using low-pressure sodium lamps.

Automatic Exposure Mode

A variety of AE functions are available for optimal
output of subjects in lighting conditions that range
from low to high.
• Full Auto
Iris, Gain and Shutter Speed can be set automatically.
• Gain Limit Setting
The gain limit can be set at the Full Auto, Shutter
Priority, Iris Priority, Bright, Spot Exposure and
Manual in the AE mode. Use this setting when image
signal-to-noise ratio is particularly important.
• Shutter Priority
1)
Variable Shutter Speed, Auto Iris and Gain
(1/1 to 1/10,000 sec., 16 high-speed shutter speeds
plus 6 low-speed shutter speeds)
1) Flicker can be eliminated by setting shutter to
 1 /100s for NTSC models used in countries with a 50 Hz
power supply frequency
 1 /120s for PAL models used in countries with a 60 Hz power
supply frequency
• Iris Priority
Variable Iris (F1.6 to Close, 14 steps), Auto Gain and
Shutter speed
• Manual
Variable Shutter, Iris and Gain
• Bright
Variable Iris and Gain (Close to F1.6, 14 steps and
F1.6 at 15 steps)
AE – Shutter priority
The shutter speed can be set freely by the user to a total
of 22 steps – 16 high speeds and 6 low speeds. When
the slow shutter is set, the speed can be adjusted
according to subject brightness. The picture output is
read at a normal rate from the memory. The memory is
updated at a low rate from the CMOS. AF capability is
low.
In high speed mode, the shutter speed can be set up to
1/10,000s. The iris and gain are set automatically,
according to the brightness of the subject.
Basic Functions