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Gae M (Gae)
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Username: Gae

Post Number: 14
Registered: 11-2008

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Posted on Sunday, December 21, 2008 - 4:19 pm:   Edit PostDelete PostView Post/Check IPPrint Post

I've read in many posts that 3D is not possible with standard LCD panels etc. I have though, just had some success with 3D stereo on my Panasonic AE-900 LCD projector. After spending many hours experimenting and failing to get anything other than a juddering mess of an image and after considering upgrading to a 3D compatible DLP or 3D ready plasma etc I have finally had some success. It's not perfect, there is a lot of ghosting in the foreground and background at times but the 3D stereo is there both in depth and pop out effect. I've compared it to the 3D on a CRT monitor and it is comparible in effect. The only difference being that the interlacing on the CRT is perfect but imperfect on the projector.

Here is my set-up.....

AMD Athlon XP 2200+
1.79 GHz 512Mb
NVIDIA Geforce FX5500 graphics card with driver version 162.50 and 162.50 stereo driver (although I didn't use this stereo driver for my results)
X3D viewing system with dongle and X3D controller interface...
I actually used the R3D controller interface when I had the 3D stereo success as it has a few more options on it.
Stereoscopic Player
Panasonic AE900 LCD projector.

3D shutter glass movies play perfectly well on my CRT monitor but up until now I had no luck getting "ANY" 3D stereo on the projector. All I kept getting was a juddering 2D image. The breakthrough came when I set my graphics card to NTSC resolution (720 x 480) at 60 Hz. The projector picked this up as "Wide480" mode and seemed to be copying the "interlacing" mode similar to the monitor via the PC VGA) input. This was after I clicked "Interlace" and "Stereo On" in the R3D interface. Things were looking up. I opened up one of my region 1 discs "Haunted Castle"...set it to "Row interlaced Left first" in Stereoscopic Player and almost fainted when I saw that the 3D stereo was actually working on the projector. I couldn't believe it and just thought it was some weird anomaly....thankfully, no it wasn't. The first 3D test in "Haunted Castle" (for those who have it) is to see if the branches of the dead tree jutt out of the screen during the opening credits. I couldn't believe it...yes, they did and no sign whatsoever of any juddering of the image. To put it into perspective, I was just on the brink of upgrading to a 3D ready DLP projector or Plasma at the cost of several hundreds of pounds.....now, thankfully I dont need to.
On closer inspection, the limitations of the Interlacing conversion attempts by the projector is all too evident. There is some ghosting in both foreground and background images. A bit like when the "conergence" is slightly off in a 3D game. With a bit of adjustement of the "parallax" though, I managed to get the central screen characters in focus and just had to slightly squint for other slightly out of focus parts of the screen. So the interlacing isn't perfectly in sync but at least the 3D effect is there and looking as good as it can do for depth and pop out effect. I have just watched some other clips from movies "House of wax" and "Journey to the Center of the Earth" (field sequential versions) and both are the same...perfect 3D, but obvious interlacing defects too. Adjustment of the gamma, brightness etc settings and size of screen minimizes the impact but on a 50" screen it looks fine....I can cope much better with slight blurring than I can with the anaglyph version and without the bloodshot eyes..which I suffer terribly from. of course, this will never replace the clarity that you no doubt get with 3D ready DLP projectors and Plasmas, but from what I've heard, even they can suffer from ghosting problems too...take the iz3D monitor as an example.
So although by no means perfect, from my perspective, this moderate success in getting field sequential 3D on a big screen means saving hundreds of pounds on having to uprade, yet again, to a 3D ready large screen...or at least until the prices come down in a year or two.

Gae



(Message edited by Gae on December 21, 2008)

(Message edited by Gae on December 21, 2008)
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Peter Žiak (Hornet)
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Username: Hornet

Post Number: 134
Registered: 4-2006

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Posted on Sunday, December 21, 2008 - 10:46 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Hi
Old DLP PJ and the solution is perfect and cheap.
the best way is self testing :-)
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Gae M (Gae)
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Username: Gae

Post Number: 15
Registered: 11-2008

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Posted on Monday, December 22, 2008 - 11:14 am:   Edit PostDelete PostView Post/Check IPPrint Post

Hi
Old DLP PJ and the solution is perfect and cheap.
the best way is self testing :-)


Ahh, but are all DLP projectors 3D compatible? I don't have the facility to test different ones either. One DLP I can buy reasonably cheap locally though is the Optoma EP720 or EP720i. Any idea if this is 3D compatible?
I know about the "list" at Andrew Woods website but most of those are either discontinued or unavailable here in the UK.
I might just stick with my imperfect LCD 3D for now.

Gae
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Peter Žiak (Hornet)
Senior Member
Username: Hornet

Post Number: 135
Registered: 4-2006

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Votes: 0 (Vote!)

Posted on Monday, December 22, 2008 - 6:01 pm:   Edit PostDelete PostView Post/Check IPPrint Post

Benq PB 6240, MP720,721 I have personally tested and are OK, The 6240 is ideal, 85 Hz (little R/L difference in color - no problem), rel.big.picture from the same distance. Have 2 pcs (Matrox Dual head) the resolution is gigantic 2048x768 85 Hz 3D active stereo.

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