Do crops impact the webcam feed?

I'm considering buying a Blackmagic device (again
) and one of my uses would be as a webcam.
And given that the space at my desk is limited, I would be curious whether choosing different resolutions, which of course result in different crops, are reflected in the webcam stream. Or is that always based on the full sensor?

And given that the space at my desk is limited, I would be curious whether choosing different resolutions, which of course result in different crops, are reflected in the webcam stream. Or is that always based on the full sensor?