Photron Fastcam SA3, Hardware Manual

Page: 34 / 101

Chapter. 3 Recording
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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, perform correction (calibration) to zero
the dark signal for all the pixels, and 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 "LCD remote controller (optional)" or from PFV.

For the procedure of performing this function, refer to "LCD Remote Controller User's Manual" or
"Photron FASTCAM Viewer User's Manual".
3.1.2. Saving Calibration Settings
The black image data for correction use that was obtained by executing the calibration can be saved
as one pattern internally on the system.
3.1.3. Loading Calibration Settings
Black image data for correction use saved internally can be loaded.