Was wondering if I've got my PJ set too close to the screen?

I've got a G70 that I've got set up in a small room and am projecting a fairly small image. My pj is 86" (center of green) from the screen and I'm projecting a 66" wide image and it is not all that sharp. Granted the tubes are not new but they (Green and Blue) are a 7 or so on the scale (Red is as new). The G70 has about 6500 hours on it and I think the tubes have been replaced at some point. It has HD-18 lenses on it and I wondering if I have it too close to the screen? Is there a sweet spot for G70's as far as the distance to screen goes? I've never gotten what I'd call a sharp image. Don't get me wrong, the image is nice but I've never gotten that tack sharp image that I was thinking the G70 has in it.

The tubes will get replaced at some point and then I would assume that the sharpness would be there at that point. I've never been able to get the "ME" pattern to be sharp on the green tube. Red tube is pretty good but the blue is a tad soft and I understand that this is by design (is this correct?).

I've been feeding this with a Momitsu 880 and also a Lumagen VisionPro HDP with XBOX and XBOX360. Neither the Momitsu or Lumagen have been what I would call sharp.

Any advice would be appreciated!

Thanks,

Tom

Down load the throw distance caculator form curts site. It might help you.
I use the Lumagen with my Marquee 8000 and it works great !
Also check out his advanced procedure section on focus and set up.


http://www.curtpalme.com/SonyG70_Downloads.shtm

Athanasios

If your throw is close to factory spec, something else you can look at is Astig. It is also important with relation to focus. However you better know what you are doing before you stick your hands up into a running pj.

1.3x width is exactly where I would put a G70.

It's where I put my XG LC with the same lenses/c elements/tubes.

I think it's bang on the right distance.