[GTALUG] 60Hz refresh is overrated [was Re: Has the graphics-card world gone mad?]

[Russell Reiter]

On Tue, Mar 30, 2021 at 7:21 PM Lennart Sorensen via talk <talk at gtalug.org>
wrote:

> On Tue, Mar 30, 2021 at 06:13:28PM -0400, D. Hugh Redelmeier via talk
> wrote:
> > TL;DR: at least sometimes 30Hz is fine.
> >
> > Everything depends on your individual eyes, what you use the monitor
> for,
> > and the setting of the monitor use.
> >
> > For my desktop use, 30Hz is actually fine.  It's what I've used for over
> > six years.  I have, within arm's reach, all I need to switch to 60Hz but
> > it hasn't seemed worth the reconfiguration effort.
>
> I find a lot of youtube content is 60 fps, as is much of the content I
> have on mythtv so due to my video card not having HDMI 2.0, I run at
> 1080p at 60Hz rather than 2160p at 30Hz.  Maybe someday I will update the
> video card to fix that, although none of the mythtv content needs 4K.
>
> X annoyingly thinks that when it detects the TV, it should run at 4K at 30Hz
> rather than the explicitly configured 1080p at 60Hz.  This happens every
> time I change inputs on the TV.
>
> > Details of my use:
> >
> > - most of what I do is fairly static.  I don't seriously watch videos on
> >   my desktop (YouTube seems fine).  I don't play games.
> >
> > - my monitor is 39" and perhaps 24"-30" from my face.  UltraHD.
> >
> > - I wear special fixed-focus glasses when using the monitor (as opposed
> to
> >   my regular progressive glasses
> >
> > Gamers want refresh rates well above 60Hz.  To get that, they seem to be
> > willing to choose lower resolutions.  That would be a terrible trade-off
> > for my use.
> >
> > Films are traditionally 25 frames/second (each frame is flashed
> > twice by traditional projectors).
>
> Well 24 unless you are in europe where they run the movies 4% fast when
> shown on TV.  Shown 0.1% slow on north american TVs.
>

Unless you count the subliminal frame. Then it's 25 fps.

https://www.ijcr.eu/articole/330_07%20Maria%20FLOREA.pdf

Remember to buy popcorn and enjoy a cool refreshing coca cola.



>
> --
> Len Sorensen
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-- 
Russell
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