Quote:
Originally Posted by Rob
Are these figures for progressive or interlaced pictures? 5' away from a 37" screen seems uncomfortably close for relaxed viewing. Yep you might notice some of the fine detail, on the other hand you could get a sun tan from the luminance of the screen.
It depends on what you are doing. We sit close to computer screens, because we need to read the fine detail of text, we're absorbed in a game or whatever. TV we tend to want to be further away, relaxed on our sofa. However the images typically displayed on the TV are much larger intended for such relaxed viewing.
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Progressive .
What the SMPTE are implying is based on mathematical calculations based on the resolving power of the human eye of 20/20 vision.
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The perfect human eye can resolve detail as small as 1.76mm at a distance of 20 feet ... At 10 feet it is 0.88mm and at 5 feet it is 0.44mm ... There is no way that the normal human eye can resolve better detail than this.
The SMPTE distance for a 32" screen (720p) is 6 feet ... If you view at 12 feet you won't be able to see the difference between real HD and upscaled SD.
So , when the normal everyday screen is thirty-odd inches and people sit 10 or 12 feet away , why do we need HD ... I personally think that 720p (via HDMI) is easily good enough for our purposes ... My Wife even watches Freeview and thinks it is great though she does realise that the V+ gives a better picture.