220Alvium USB Cameras User Guide V3.6.4
Performance and troubleshooting
Shutter types affecting image readout
Some Alvium USB camera models are operated using global shutter (GS):
Other models use rolling shutter (RS). Alvium 1800 U-2050 models with Sony
IMX183 sensor offer global reset shutter (GRS) in addition:
Property Line readout Moving image
Global shutter (GS)
Property Rolling shutter (RS) Global reset shutter (GRS)
Line readout
Line exposure start Deferred from line to line Common for all lines
Line exposure time Common for all lines Increases from line to line
Image acquisition
of moving objects
Image brightness Constant over the image Varying over the image
Moving objects Distorted shape Shape without distortion
Typical application Static objects Moving objects
Compensation Use an additional mechanical shutter or use a strobe light:
Table 110: Shutter types affecting image readout
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