I haven't tried using the teleprompter with a webcam, but I don't see why it wouldn't work. I use a Sony a6600 myself, with a Sigma 16mm/f1.4 prime lense.
Regardless, I recommend capturing in 4k, and running that through OBS so you can zoom/crop the image for ideal framing, optional of course.
Regardless, I recommend capturing in 4k, and running that through OBS so you can zoom/crop the image for ideal framing, optional of course.