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● Control procedure
■ Setting of Exposure control
Set a value for the ‘ExposureTimeControl’ register.
Take priority AcquisitionFrameRate setting
Take priority ExposureTime setting
* initial factory setting
■ Control of ExposureTime (MANUAL)
IIDC2 address
Specify the ExposureTime with an integer value. ExposureTime is calculated by the following formula:
ShortExposureMode = OFF (14.8μsec ～ 16sec)
ExposureTime (Absolute value) = ExposureTime / 37,500,000 [sec]
ShortExposureMode = ON (1.08μsec ～ 13.31μsec)
ExposureTime (Absolute value) = ExposureTime * 53 / 983,850,009 [sec]
Legacy address
Can be set only when ShortExposureMode = OFF
Specify the ExposureTime with a rational number. ExposureTime is calculated by the following formula:
ExposureTime (Absolute value) = Shutter speed numerator / Shutter speed denominator [sec]
■ ShortExposureMode
IIDC2 address
Before write to ShortExposureMode (0x0020 439C), stop image output (Write to 0x00 to
AcquistionCommand (0x0020 303C)). After change setting of PixelSize, restart image output (Write to
0x08 to AcquistionCommand (0x0020 303C)).
Notes on ShortExposureMode setting:
- If you use ShortExposureMode, the image quality may deteriorate. Also, the actual exposure time may vary
depending on the individual differences and the operating environment (such as the operating temperature).When
using the ShortExposureMode, I ask you to have final image quality checked with your environment.
- The brightness of the upper part of the screen may be different from that of the lower part. Note that this is a
characteristic of a CMOS image sensor and is not a fault.
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