Yeah, I'm at ~2.2 meters and I have a 50" screen. I feel that it's the perfect size for that distance.
Might as well drop the full list:
A 32" full HD 1080p TV is
retina when seen from 1 meter and 27 centimeters of distance.
A 42" full HD 1080p TV is
retina when seen from 1 meter and 67 centimeters of distance.
A 50" full HD 1080p TV is
retina when seen from 1 meter and 98 centimeters of distance.
A 60" full HD 1080p TV is
retina when seen from 2 meters and 38 centimeters of distance.
A 65" full HD 1080p TV is
retina when seen from 2 meters and 58 centimeters of distance.
A 84" full HD 1080p TV is
retina when seen from 3 meters and 33 centimeters of distance.
Same for 720p, in case someone is considering a Panny 42/50X60: (great TV's, BTW; specially in europe where there isn't a S60)
A 32" HD ready 720p TV is
retina when seen from 1 meter and 98 centimeters of distance.
A 42" HD ready 720p TV is
retina when seen from 2 meters and 60 centimeters of distance.
A 50" HD ready 720p TV is
retina when seen from 3 meters and 9 centimeters of distance.
It's very helpful, to have those numbers at hand when deciding for a TV.
But that's a bit too much for 720p and almost unbearable if you also plan 480p/i content (freeview tv, dvds, Wii).
I feel perfect 42" at 1.80m exact screen-eye distance.
Actually, not necessarily so. (although your figure for 42" is eerily close for 1080p viewing at said distance)
For starters plasmas are not as crisp when it comes to their pixel boundaries, that means the per pixel image, even if it is 1:1 is quite a bit softer than it would have been on a LCD.
Take the X60's (HD Ready models) they're easily the best TV's in the market for 480p content at this point, an they're never small (they start at 42"). Yet they're not native 480p: they're helped by both their resolution and scaling not having to be tenfold, but also by what I said previously, they have softer pixels.
Trust me... I have one. (well, it's an X50, so it's the 2012 model)
How good? hard to quantify without seeing one, but:
Framebuffer grab:
My TV: (upclose)
This one was taken by day, so you can actually spot some reflection. Still it's very indicative, although the menu configuration is a little different. Look at the letters and the pointer instead, and of course the overall upscale quality. Now imagine the quality from my sofa, I popped that in just for kicks ended up finishing it.
Framebuffer grab:
My TV: (offscreen)
Framebuffer grab:
My TV: (offscreen)
(click on the offscreen images to enlarge) The grain is there due to the fact it was taken by night from a cell phone camera. again, it should illustrate though that the quality is quite up there; and jaggies are hard to be that pressing on this.
Yet, it's a 42" part; these weren't the "holy grail" for Wii owners a few years ago for nothing; they're consistently awesome for 480i/p and 720p. You surely notice that 480p is not 720p, it's just that it looks very good for what it is. The figures above, of course are meant for 1:1 content, so this is a different matter altogether...
They essentially mean, that, if you're 2 meters away from a 32" TV, dot-pitch wise being 1080p or 720p is indistinguishable, or how 4K is mostly a sham providing you're going by the 1080p inch/viewing distance list. And beeing closer than that is usually like wanting to see a soap opera like you would see a tennis match from the first row; happy wry neck pain awaits thee.
We could forego AA altogether, though; but that's essentially natural
supersampling done by our eyes (at a much grander cost for the rendering technique/hardware).