gives the name of the imaging device used to capture images.
- $ImagingDevice is initially set to $DefaultImagingDevice.
- $ImagingDevice can be set to any camera listed by $ImagingDevices.
- Clearing $ImagingDevice resets the camera source to $DefaultImagingDevice.
- Changing $ImagingDevice while CurrentImage or ImageCapture is in use will switch the camera source for capturing images.
Introduced in 2014