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Basic Operation & Standard Features
3-4 BASLER A600
f
DRAFT
3.2 Exposure Control
3.2.1 Setting the Exposure Time
Exposure time is determined by a combination of two values. The first is the setting in the Value
field of the Shutter control register (see page 4-23). The second is the Shutter Time Base.
Exposure time is determined by the product of these two values:
Exposure Time = (Shutter Value Setting) x (Shutter Time Base)
The shutter time base is fixed at 20 µs. Exposure time is adjusted by changing the setting in the
Value field of the Shutter control register. The shutter value setting can range from 1 to 4095
(0x001 to 0xFFF). So if the Value field of the Shutter register is set to 100 (0x064), for example,
the exposure time will be 100 x 20 µs or 2000 µs.
3.2.2 Maximum Exposure Time
The maximum exposure time for a given frame rate is determined by the following formula:
For example, if a camera is operating at 40 fps:
So in this case, the maximum exposure time is 25.0 ms.
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Exceeding the maximum exposure time for your frame rate will cause the camera to
slow down, i.e., it will cause the camera to operate at a lower frame rate.
1
frame rate
--------------------------- maximum exposure time=