NAC Image Technology MC-529, User Manual

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3.3.8 Black Balance (BLK BAL)
Function that corrects the black level sensor and erases noise elements.
The MEMRECAM GX-1 reads the sensor temperature and automatically implements the black balance.
However, if a finer image is desired, the black balance should be selected just prior to photographing.
The sensor black level and the noise elements will vary according to the recording speed and frame size
settings. Also, if the recording speed and frame size are changed when the black balance is ON (REG), a
black balance warning will be displayed.
Black balance can only be calculated while in the STOP mode.
1) Put the lens cap on the camera so the sensor receives no
light.
2) While in the STOP mode, press MENU to display the
TOP MENU.
3) Use the arrows to select "BLK BAL" from the TOP
MENU. (Figure3-67)
4) Use the arrows to select the black balance.
OFF No black balance correction
REG
Black balance reflects the corrected data
SET Calculates black balance correction
-
ⅰ
) Start calculating black balance correction start by selecting "SET".
-
ⅱ
) It automatically switches to "REG" after black balance correction calculations have been completed.
Caution)
Make sure the lens cap covers the sensor when calculating the black balance correction.
Proper correction calculations will not be possible if light gets in to the sensor, and the black level
of the resulting image will not be uniform.
Figure 3-67 BLK BAL(TOP MENU)