I made a few calculations based on what would be a standart viewfinder for 1960's shows, shown here
Most of these shows are now being transfered in HD revealing the whole framing, or near whole, in essence being misframed, or wrongly framed:
- If you keep the intended 1960's as seen on TV framing, then the scan should just be the action safe area (6) at 1.33:1
- If you scan up to the television scanned area (5), and keep the intended action safe vertical framing, the format will be 1.47:1
- If you scan up to the academy ratio area (2-blue), and keep the intended action safe vertical framing, the format will be 1.54:1 = 14/9
- If you scan up to the camera aperture (1-yellow) and keep the intended action safe vertical framing, the format will be 1.61:1
It is good to note that excess of verticality is much more damaging to the compositions of the shots than any excess of horizontal information is. They all become unbalanced and don't make sense. One can see from there, how it's easy for TV shows or TV movies to be converted in wider screen, with only minimal cropping of the vertical action safe area.
Note that this process would be different from Panavision shots series, which had an off center extraction for TV prints.