The effects of vignetting can be pronounced, and care must be taken when choosing the optimum lens solution. Vignetting is particularly undesirable in line-scan cameras, as it creates an uneven sensitivity across the sensor which can be very long.
In contrast to sensor-shading, where the intensity variation is caused by the sensor, vignetting is primarily caused by the lens.
There are two types of vignetting:
- Lens or mechanical vignetting (shadowing)
- Cos4 vignetting
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