I have and old television that i want to include in my film and i don't think using a greens screen would look very convincing. I was wondering how you change the frequency the camera shoots on to avoid any discrepancies with the crt display.
I've done green screen to simulate a picture on a TV and, if done correctly, can be very convincing. That said, rotate your shutter speed dial until it displays CS (Clear Scan). Then open the camera menu and go into "Camera Setup". Then select Clear Scan. Adjust the frequency until nasty black bar from cycling through your picture. Then close the menu. I think this only works in TV or Manual mode.