3.1. Image Initialization (Calibration)
In order to maximize the high image quality of the system, it is necessary to correct the
non-uniformity in each pixel that is inherent in the image sensor.
The system is equipped with a function to correct the output value for each pixel using the black level
as a standard. Using a uniform black image as the standard, each pixel's black level is set to zero.
This makes it possible to obtain faithful image output for the input light level.
•
In order to obtain faithful image output, execute calibration when the following settings are changed.
■ When the frame rate is changed
■ When the shutter speed is changed
■ When the resolution is changed
Also, depending on the settings, phenomena such as the following may occur.
■ Fixed noise like horizontal bands appears
■ A portion of the screen is clear, but noise appears in the area around it
These phenomena can be resolved by executing calibration again.
3.1.1. Executing Calibration
Calibration is executed from the "Keypad (optional)" or from PFV.
•
For the procedure of performing this function, refer to "Remote Keypad User's Manual" or "Photron
FASTCAM Viewer User's Manual".
3.1.2. Saving Calibration Settings
.The system can save a correction data which is obtained by executing the calibration.
•
The save process might take a few minutes.
3.1.3. Loading Calibration Settings
Loading and applying the image correction data which hae been saved on the system.
25 FASTCAM SA-Z Hardware Manual
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