I am certain the camera on the remote end was incapable of optically zooming. Skype evidently took the HD frame from the camera on that end, cropped it to somet

I am certain the camera on the remote end was incapable of optically zooming. Skype evidently took the HD frame from the camera on that end, cropped it to something like VGA size, and sent only those pixels across the wire. On my end, it was re-sampled and displayed full-size. The picture on my end did not change physical size; it looked as if the camera zoomed in. Mainly, I was impressed by how smoothly and seamlessly it was done.