Movies of Television Show Provide Permanent Record (Mar, 1948)
Movies of Television Show Provide Permanent Record
With a 1200-foot magazine that permits continuous recording of a half-hour program, a specially designed movie camera photographs television programs directly from the monitor tube at the broadcasting station. The double-chamber magazine holds both unexposed and exposed film and can be removed in a lighted room. The camera will be used by stations to provide a permanent record of their programs.
After focusing and framing I’d expect a lightproof enclosure between the CRT and camera lens.
No mention of flicker abatement.
Film = 24 frames per second.
Video = 30 fields per second.
Any synchronization between the CRT and camera?
Some of the “Your Show of Shows” I’ve seen on PBS look great!
The camera is adjusted to film at 30fps.
You’d think this was as simple as parking a movie camera in front of a TV screen, but it actually had to wait for picture tube technology to make a bright enough image to film well at high speed.
Before 1948 we have less than 10 minutes of off-screen film, all of that shot at 16fps silent speed.