On Tue, Feb 11, 2020 at 09:39:29AM -0500, D. Hugh Redelmeier via talk wrote:
> OK.  Most but not all TV sets are fine for this.  I would not trust
> the RGBW displays but I haven't tried them.

My TV is RGBW, but it is OLED.  Some RGBW LCD panels from LG in the past
did not actually have RGB subpixels for every pixel which was a problem.
The OLED ones do have RGBW subpixels for every pixel (so 32M subpixels).

I would not use it as my computer display, although I am sure it could
do it just fine.  I do have a mythtv frontend connected to it, and due to
HDMI 1.4 limitations on that machine, I have to force it to 1920x1080@60Hz
rather than the 3840x2160@30Hz it likes to default to since my content
on mythtv is never more than 1920x1080 but is often 60Hz.

> Also: go for IPS or VBA technology.

For a computer monitor, sure, but for my TV, not way.

> If you are letting your monitor do scaling you are doing it wrong.
> You should let your computer do that.

Well sure but if your HDMI link is too slow, letting the screen do it
is a better option than having terrible frame rate.

> One exception: if a computer only does 1920x1080, you can let a
> TV/monitor double the pixels in each dimension.  This is dumb in the
> long term but sometimes you need to do it for a short time (eg. to
> adjust firmware settings in a server).  (It's really annoying to not
> be able to see text during POST and the subsequent startup.)
> 
> Scaling TV or movies is an interesting problem since it extends into
> the 4th dimension (time).  You really don't want to get into that with
> a monitor.  In fact, you want to turn off any multi-frame processing
> that a TV does because it will add latency to the display.
> 
> True.  Again, this is why my talk was "what I've learned about
> UltraHD".  Actual experience is enlightening.  Reading specs is
> important but not sufficient.  Ergonomics is full of surprises.  One
> of them is: not everyone is the same.  That's why I tried to frame my
> talk as about me :-)

The specs are often lacking in details.

-- 
Len Sorensen
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