EL-2800M-USB / EL-2800C-USB
- 55 -
Fig.42 ALC channel area
8.2.5 Balance White Auto
This is the auto white balance control function.
The operation can be selected from the following:
OFF:
Adjust manually.
Once:
Operate only one time when this command is set
Continuous:
Operate the white balance control continuously
.
8.3. LUT
This function can be used to convert the input to the desired output characteristics.
The Look-Up Table (LUT) has 256 points for setup. The output level can be created by multiplying
the gain data by the input level. In the EL-2800C-USB, the same LUT characteristic is applied
independent of the color value
8.3.1 LUT Mode
Can be selected from OFF, gamma (see section 8.4), or Lookup Table.
8.3.2 LUT Index
This represents the “starting” or “input” pixel value to be modified by the Lookup Table. The
EL-2800-USB has a 256-point Lookup Table, meaning the index points are treated like an 8-bit
image with 0 representing a full black pixel and 255 representing a full white pixel. The index
points are automatically scaled to fit the internal pixel format of the camera. This is common
for all output configurations.
8.3.3 LUT value
This is the “adjusted” or “output” pixel value for a given LUT index. It has a range of 0 to 4095
(12-bit) and is automatically scaled to the bit depth of the current operating mode (8-bit, 10-bit or
12-bit). Note: linear interpolation is used if needed to calculate LUT values between index points.
In the color mode, the LUT function works the same regardless of the color of the pixel.
Low
Right
Low
Mid-right
Low
Mid-left
Low
Left
Mid-Low
Mid-left
Mid-High
Mid-left
High
Mid-left
Mid-Low
Left
Mid-High
Left
High
Left
High
Mid-right
Mid-High
Mid-right
Mid-Low
Mid-right
High
Right
Mid-High
Right
Mid-
Low
Right
