I find myself moving closer and closer to my screen as time goes on. I have a 118″ 16:9 Carada Precision screen (the largest I could fitit's less than half an inch from the walls on either side!) and often find myself sitting around 7.5′ back from it with 2.37:1 content.
I hadn't really been going by any seating distance guides, but that works out as 1.5x the screen height, though it's more like 2x the image
height. Any closer than that and I don't think I'd really be able to take in the whole image at once.
This is only with Blu-ray of course and I sit a little further back with 16:9 content. (probably keeping to about 2H without realising it) With lower quality sources like DVD I tend to sit even further backmore like 2.5-3H.
Convergence hasn't been too much of an issue for me, or the visibility of the pixel structure. I find that Sony's 0.1px convergence adjustments do a great job correcting for misconvergence with video content.
As for the visibility of the pixel structure, well I can only get back about 14′ in this room and even then I can still see it if I'm looking, so sitting closer doesn't bother me.
The things that do bother me though is that the plane of focus doesn't seem to be quite parallel to the screen in my setup. I'll be readjusting things soon anyway, but it seems that one side of the image is slightly
off focus from the other even though the edges of the image are more or less perfectly aligned with the screen. This is only very slight mind youno-one else has noticed it, even when I've pointed it out. I'm hoping this is just a slight misalignment and not a side effect of using lens shift.
Another issue is that the lens used in the HW10 seems to expand or contract with heat, and so it shifts in/out of focus over time. I have found that if I enable the high cooling mode and wait about an hour before focusing it, things seem relatively stable for as long as I leave it on afterwards though. Since doing that it hasn't really bothered me past the initial 20-30 minute warm-up. I guess they expected people to be sitting far enough back that they wouldn't notice.
My biggest issue is motion handling really though. It's exaggerated by the seating distance of course, but even 14′ back it bothers me. Current projector technology just isn't very good at motion handling, and 24fps really isn't enough for the speeds a lot of directors are moving the cameras at these days.
So it's all about compromises and preferences really, at least until we get scanning laser projectors that no longer require focus or have pixel gapsEDIT:
And distance should be measured in image heights, not widths. Height matters much more. (if it wasn't for the fact that I'd have had a smaller image with 16:9, I'd have gone with a CIH setup here to have a fixed seating distance)