Exposure menu, Mode (exposure mode), Agc (auto gain control) – Vaddio BRC-H900 Operating User Manual

Page 32

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EXPOSURE Menu

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EXPOSURE Menu

The EXPOSURE menu is used to set the items regarding
the exposure.

MODE (exposure mode)

FULL AUTO: The exposure is adjusted automatically

using the sensitivity, electronic shutter speed and
iris.

MANUAL: The sensitivity (GAIN), electronic shutter

speed (SPEED) and iris (IRIS) are adjusted
manually.

SHUTTER Pri: Shutter Priority mode. The exposure is

adjusted automatically using the sensitivity and iris.
Adjust the electronic shutter speed (SPEED)
manually.

IRIS Pri: Iris Priority mode. The exposure is adjusted

automatically using the sensitivity and electronic
shutter speed. Adjust the iris (IRIS) manually.

BACK LIGHT: Back light function.
SPOT LIGHT: This function allows exposure

adjustment at darker levels if a portion of the object
to be shot is illuminated.

Note

You cannot use both of the BACK LIGHT and SPOT
LIGHT functions at the same time.

When you select MODE, some of the following setting
items that are required for the selected mode appear.

GAIN: Select the gain.

You can select the gain to –3 or to within the range
0 to 24 dB in units of 1 dB when MODE is set to
MANUAL.

SPEED: When MODE is set to MANUAL or

SHUTTER Pri, select the electric shutter speed
from among the following:

For the 1080/59.94i or 720/59.94p signal
format
1/60, 1/100, 1/120, 1/125, 1/250, 1/500, 1/1000,
1/2000, 1/4000, 1/8000

For the 1080/50i or 720/50p signal format
1/50, 1/100, 1/120, 1/125, 1/250, 1/500,
1/1000, 1/2000, 1/4000, 1/8000

IRIS: When MODE is set to MANUAL or IRIS Pri,

select the iris from among the following:
F1.9/F2.2/F2.4/F2.6/F2.8/F3.1/F3.4/F3.7/F4.0/
F4.4/F4.8/F5.2/F5.6/F6.2/F6.8/F7.3/F8.0/F8.7/
F9.6/F10/F11/F12/F13/F15/F16/CLOSE (CLOSE
is selectable only when MODE is set to
MANUAL.)

AE SPEED: Select the exposure adjustment speed at

which an optimum exposure value is obtained
automatically. You can select LOW (slow speed),
MID (normal speed) or HIGH (fast speed). Select
when the brightness of the object is changed
momentarily.
This function is available when MODE is set to
FULL AUTO, SHUTTER Pri, IRIS Pri, BACK
LIGHT, or SPOT LIGHT. If MODE is set to IRIS
Pri, this function is not available when AGC and
AUTO SHUTTER is set to OFF.

AE LEVEL: Select the level of the automatic exposure

adjustment. Select the iris from among
–1.0, –0.5, 0, +0.5, and +1.0.
This function is available when MODE is set to
FULL AUTO, SHUTTER Pri, IRIS Pri, BACK
LIGHT, or SPOT LIGHT. If MODE is set to IRIS
Pri, this function is not available when AGC and
AUTO SHUTTER are set to OFF.

AGC (auto gain control)

Set the automatic gain control function for a dark
subject. When AGC is set to OFF, GAIN is set to 0 even
if the subject becomes dark.
This function is available when MODE is set to FULL
AUTO, SHUTTER Pri, IRIS Pri, BACK LIGHT, or
SPOT LIGHT.

AGC LIMIT (auto gain limit setting): Set the

maximum gain level while AGC is set to ON. Select
a value from among 3, 6, 9, 12, and 18 dB.
This function is available when MODE is set to
FULL AUTO, SHUTTER Pri, IRIS Pri, BACK
LIGHT, or SPOT LIGHT and AGC is set to ON.

AGC POINT (switching point for auto gain): Select

the iris value that the auto gain control function is
activated from among F5.6, F4, and F2.8.
This function is available when MODE is set to
FULL AUTO, SHUTTER Pri, BACK LIGHT, or
SPOT LIGHT and AGC is set to ON. After
activating the auto gain control function, the iris
starts to be adjusted from the value that is set in
AGC POINT when the gain level reaches to the
maximum value that is set in AGC LIMIT.

<EXPOSURE>

>MODE FULL AUTO

AE SPEED MID

AE LEVEL 0

AGC ON

AGC LIMIT 12dB

AGC POINT F2.8

AUTO SHUTTER ON

SHUTTER LIMIT 1/250

SHUTTER POINT F16

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