"Gary" wrote in message
news:nElQn.7252$1b3.5805@hurricane...

"Mike Henry" wrote in message
...
In , Vincent
wrote:

Well I'm up for a mathematical challenge... lets throw some numbers at
this.

[big snip of great stuff]

Top work! You could have found the Dec thread too but I guess you like
doings maths for fun :-)

In conclusion, if you want to buy a 1080p HD TV based on what a human
eye with perfect vision can perceive at a given distance, and you
don't want to take bitrates, compression, codecs, cabling, etc into
account, then use the table below. Anything bigger and you're wasting
money, anything smaller and you won't be able to see all the detail.

TV size - Viewing Distance
32" - 43" (3.6 feet)
37" - 50" (4.2 feet)
42" - 57" (4.8 feet)
46" - 63" (5.2 feet)
52" - 71" (5.9 feet)

Interestingly, my calculations seem pretty close to the linked page,
so I guess there's some truth to them.

Either that or you got the calculations right :-). Yes this was
previously
covered by John Legon and Andy Champ in a thread here last December. (See
http://groups.google.com/group/uk.te...-8&oe=utf-8&q=
)
At the time I plugged in my figures for a viewing distance of 3m for
1080p, and got a screen size of 75" - which matched the engadget.com
chart
nicely. I've linked to it since as it's handy and shows different
distances for 1080p and 720p, and you can easily check if you are sitting
in the "zones" between the lines. As you say, if you're too far away (eg
you have a 1080p panel but you sit in the green or blue zones on the
chart), then you're wasting money.



One thing forgotten in all this is TV is an optical illusion. No 2 people
will see exactly the same thing because of this.

Gary



My eyes have been tested and I have better than 20/20.
My wife can see small things further away than I can IE her resolution is
better than mine.

I asked the optician how can i get my eyesight to be better than hers . Get
a new wife was the answer!

Gary