NAC Image Technology SP-642, User Manual

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It is possible to conduct black balance at a later time for images that have already been recorded.
In this case, to conduct the black balance calculation, select ON for the Black Balance in the play
parameters found in the "Camera Details" dialogue.
The following precautions apply when using black balance.
・
If the frame rate or frame size settings are changed after conducting the black balance
calculations, make sure the black balance is recalculated. If this is not done, the image will
not be properly displayed.
・
Calculate the black balance immediately before or after recording. If a long period of time
has elapsed between the black balance calculation and recording, the noise may not be
adequately removed.
・
With the GX-1/GX-3, data corrected for black balance will be lost if the power to the camera
is turned off.
・
The black balance cannot be turned ON/OFF for downloaded MCFF.
■GX Cameras
Corrected black balance data for GX cameras are saved only as data for all of the segments.
Individual corrected black balance data cannot be retained in each segment.
The black balance must be updated during STOP.
■HX Cameras
Corrected black balance data for HX cameras are saved in each segment.
Also, corrected black balance data is saved once in VIEW/ARM/REC, and a manual update
of the black balance must be performed during VIEW or STOP.
The black balance correction during VIEW applies to images recorded (VIEW/ARM/REC)
in the future. Once REC ends, it is applied to that segment.
The black balance correction during STOP applies to images recorded (not reflected in
images recorded in the future) .
If the images in the current segment are not saved, the black balance update cannot be
performed during STOP.
■Q Cameras
Corrected black balance data for Q cameras are saved only as data for all of the segments.
Calculated black balance data is saved in control PC.
So, when you change control PC, you need to update black balance.
The black balance must be updated during STOP.