Mick,
Yes, you certainly can. I started out on my SX-900 by using a USB2.0/HDMI adapter to send the mirror video to a second monitor (a 4K TV) for my desktop PC (Win10).
It worked great, but a disadvantage is that I had to switch that monitor back and forth between the PC, and TV mode.
Video was fixed at full screen size, which I really didn't want.
It turns out, that instead of sending the signal to a different HDMI port on the TV, all you really need to do is add another HDMI to USB connector to the adapter,
which you can then plug into a USB port on your PC. Here's the trick -- now run the "Camera" app on your PC (it's part of Windows) and select the correct port.
Now you'll end up with a resizeable window on your PC, and just set it anywhere from Fullscreen to any smaller size. No need to switch back and forth. Clarity is exceptional.
Jerry
