> > I wonder why films can get away with 48 Hz, but CRTs are annoying at 70 Hz?
> 
> I think it has something to do with motion blur.  A CCD takes very
> little exposure for a frame, while film, I think, has a longer
> exposure period.  So you get more motion blur with film than with a
> CCD.  Also, there may be something to the way the TV scans the image,
> while the film projector flashes it all at once.  Note that I could be
> totally full of crap here, so you may want to look elsewhere.  There
> are people who know the answer to this question.

People find CRT computer monitors annoying with too low a refresh rate
even with static text images.  No CCD involved.

As you say, it might have something to do with scanning vs all at once.
The LCD monitors that turn off the backlight are doing it as a scan.
I wonder if they tried all at once.
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