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8-5. EVI-D30/D31
Functions
CAM_WB
1)
2)
3)
Auto white balance (AWB)
For this unit's AWB, the TTL method is adopted to reproduce the colors of the subject as closely as possible by calculating the color data of
the whole screen.
Furthermore, the white balance area is limited to prevent operations that show all objects as white from being performed when white balance
operations are performed.
The area for performing the auto white balance is also changed by determining whether it is indoors or outdoors according to the brightness.
Preset white balance
The preset white balance can be selected from fixed indoors (3200K) and fixed outdoors (5800K).
One push white balance
The one push white balance is a function which, when once the subject is set to certain lighting conditions, will expose the subject under
these conditions by gaining white forcibly.
The color is reproduced naturally without being affected by the surrounding conditions of the subject.
When set, the one-push white balance trigger is sent assuming that the white subject occupies more than 1/2 of the screen.
The one-push white balance data is provided when the lithium backup SW is ON even though the power is off (2 hours for fully-charged
battery). When the lithium backup SW is off, the data will be lost when the power is turned off. Therefore, when turning off the power, set the
one-push white balance again.
CAM_AE
1)
2)
Full auto
When the automatic exposure (AE) mode is set, the auto-iris, AGC (auto-gain), 1/60 sec shutter (EVI-D31 is 1/50 sec shutter) will operate.
When the power supply is turned on with the lithium backup off, the automatic exposure mode will be set.
Manual
When the manual mode is set, iris, gain and shutter will be set separately.
Bright Control
Bright Control is an adjustment function of the brightness with the combination of gain and iris. When in darkness, gain controls exposure
and when in the brightness, iris controls exposure. Since both gain and iris are fixed, this function is useful when capturing images under
fixed brightness condition. The status at auto exposure will be held once when changing the mode from auto exposure to Bright Control.
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Table. 8-1.
8-6
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