[opendtv] Re: State of the Art LCD 45" HDTV

Recently, I saw a demo of a 1280x720 LCD front projector.

The picture was approximately 2 meters wide (with a cinema aspect 
ratio), and it was not an impressive size at all, i found it wanting 
from this point of view.
I would certainly feel frustrated if after putting money in a costly 
HDTV setup, i could not get more than that size out of it.

The corner of the store where the display was did not allow me to get as 
far as the screen as i would have liked, yet a rough measurement with my 
steps suggested a distance on the order of 3.5 to 4 meters.

In those conditions, the pixels of the LCD matrix were just at the limit 
of visibility, on the bad side of the limit, meaning i could see them.
So to me, 1280x720 is not enough.

Some recent european reports consider that 720 is enough for 130 cm 
screens (diagonal), but that beyond that, 1080 should be considered.
After that (far from scientific) experience, i am tempted to concur .


Craig Wrote :

> Hmmmmmm.....
> 45" diagonal with 1920 x 1080 resolution. The screen is 4439 inches 
> wide, 22 inches tall which means it has 49 samples per inch.
> 
> I wonder what viewing distance this display is optimized for?
> 
> In order to perceive this level of detail, by my calculations, one 
> would need to sit in the range of 4-5 feet from the display.
> 
> 3.3 picture heights would be six feet.
> 
> Sounds like a great information display for digital signage 
> applications, but overkill for an HDTV display, for which 1280 x 720 
> is ideal for a display of this size when viewed at typical viewing 
> distances 9-11 feet.
> 
 
 
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