On 07/01/2021 07:40, Ahem A Rivet's Shot wrote:
> On Wed, 6 Jan 2021 23:08:51 +0000 (UTC)
> Eli the Bearded  wrote:
>
>> In comp.sys.raspberry-pi, Ahem A Rivet's Shot   wrote:
>>> Axel Berger  wrote:
>>>> Exactly. And there is another thing. Originally video had to be fast,
>>>> for the eye needed at least 70 Hz not to see annnoying flicker. Those
>>>  That number seems to have been creeping up all my life - 24FPS
>>> was once considered good enough for movie cameras.
>>
>> Possibly, but probably not. Thomas Edison believed 48 FPS was minimum
>> quality projection. Is that during your life?
>
>  No, but 50Hz interlaced monitors (stripped TVs really) are and
> removing the interlace was considered enough to make it flicker free and
> "professional" circa 1980 - I sometimes turned the interlace back on and
> pushed the resolution up. In more recent times 60Hz was said to be needed
> for flicker free and now it's 70Hz I'm seeing and high end TVs are currently
> advertising 120Hz.
>
>> Film was recorded at 24
>> FPS, yes, but projected so that each frame was shown two or three
>> times, 48 to 72 FPS.
>
>  Weren't domestic cine projectors 24 fps and considered good enough
> for the use ?
>
16fps IIRC?


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