Thank you! I plan to use it initially as experiment and this is good news!


Yes they are but if somewhat successful with the glasses i plan to exchange the internal dichroic mirrors of the lcd instead of adding an extra filter! I made some loose studies about the 3-lcd principle and hopefully infitec has dichroic mirrors especially for 3-lcd's. I know they modify some existing projectors but not which types or how.
The mirrors in 3-lcd's are dichroic and maybe the extra filtering of the infitec glasses will cause a very high basecolor lightloss with some basecolors vs l/r-lenses. I have no idea how "narrow" the original dichroic filters in the lcd's are for now but it may cause some trouble...
I probably typed an error in previous post about needing 3 mirrors/pj. Two mirrors with infitec specs seems needed for each pj. The mirrors should be a tad cheaper than standard infitec/dolby filters since they do not have so many "active" layers but that's just a very uneducated guess... I'm not sure dolby sells those mirrors either and if they do i assume alignment might be very critical! If possible to get a hold of those mirrors one big plus is that the basic colors of the projectors are entirely replaced and the brightness should theoretically be the same as is now! Maybe metamerism between people will be reduced as well?


Getting two screws as leftovers is not the worst thing that can happen... I'm certainly not determined to make such a mod to my pj's yet. Even if they're old they're deared but if i want to change the mirrors i need to take everything apart thus really risqueing the functionality of the pjs without possibility to restore them...


If you have the space, definitely!


For my concern this could fall on many things. Maybe i'll try to get a hold of a cheap 3-lcd-pj with a broken lamp just for pre-tests.

Cheers!

OK. LCD can use only 2 dichroic mirrors. But with Infitec, I am afraid you will actually need three of them:

Lets assume each color spectrum is divided in two: R=R1+R2 / G=G1+G2 / B=B1+B2

Assume projector #1:
R panel: R1 goes through, the others are reflected.
G panel: G1 reflected, the others go through.
That leaves R2 + G2 + B1 + B2. If you want only B1 to reach B panel, you must use a third dichroic mirror.

Also this mirror must not have a solid back. R2+G2+B2 must fall in a lumen trap. Never used.

To avoid crosstalk between the two projectors, you also need gaps between wavelength notches. You lose about 60% of the light overall.


Crosstalk requirement will not allow this. Notch edges must be steep and you will need gaps.


Sorry Likay, 40% at best. R2 G2 B2 and gaps are definitely lost.

IMO, it should be better to use a single Infitec filter between the lamp and the first miror. You may lose an extra 5-10% light but it should be much simpler.

An idea:
Putting the filter in the lamp itself should be possible...

EDIT:
Interesting explanation/warnings about UHP lamps: http://www.ercservice.com/lamps/philips/PhilipsUHPLamps.html
...where you can read: UHP lamps are not good toys for casual experimenters. I agree.

Too bad. So I give up. Filters will stay outside ! Still much better than polars anyway.

Jack

Please find my Infitec/dolby color correction software kit version2:
http://jptheking.free.fr/3d/Dolby_calibration_kit-v2.zip

This of course is only for playing 3D movies. No gaming.
Jack

EDIT: Documentation can be found here: http://jptheking.free.fr/3d/Dolby_calibration_kit.doc

Likay, have a look:
http://www.avsforum.com/avs-vb/showthre ... st20269971

Thanks. I've got the filters quite some time ago but i lack the time to try it out properly yet (the drop-in of 3ds takes some of the freetime i have too... lol).
Much work but money drops in and very little time to spend them...

Great thread, with regards to tearing due to Nvidia non existant horizontal span mode in Win7, wonder if anyone have used this before http://www.dhgate.com/mviewer-mv103-hdv ... 3759f.html
basically it does the spanning work, the box is tricking the OS to think that it is a very high resolution monitor which then split into 2. Maybe it will help in gaming too? Matrox have a box like this too DualHead2Go, but i think this Mviewer is superior as it uses dual link DVI input instead of VGA in the matrox

Regards

I think Matrox also has a DVI dual link version and a DisplayPort of the dual-head2go. But it's still an extra purchase.

By the way, iZ3D has introduced a side-by-side span mode in the latest iZ3D beta driver designed to leverage AMD Eyefinity span mode.
The feature is hidden in the config.xml file and is not documented yet. In some games, it works great, it other games it's buggy or fails to render, it's still a beta feature but at least it's there !

I've been able to play UT3 and Devil May Cry 4 with perfect sync. It's so good on the big screen !
http://forum.iz3d.com/viewtopic.php?p=30005#30005

I am actually using a matrox triplehead2go digital (dual link DVI required).

For video playing, it is the *only* answer I found to address the judder/tearing/sync issues. I can then use overlay and reclock. I am using 48fps as I am doing frame interpolation as well.

If you can do that with the graphic card settings, then there is no problem for you. I have never been able to achieve that on my side with 7 different entry level graphic cards (I am no player) including ATI, NVIDIA and MATROX. To speak truly, I have not tested Vista, Seven (I am an XP guy) and high range graphic cards. Mine is an ATI Radeon HD 3400 (no need for more).

Jack

XP has issues with dual screen directx acceleration.
Only one is hw. accelerated, so this is why delay, tearing occurs.
This is fixed in vista/w7.

But despite this i have great success in XP with Ati 5450 and extended display mode. No tearing and no sync issue. I will test the 48 fps, but our movie is in 50i format, so we see 50fps right now

I do not have any 50p footage, but on my setup I can configure the desktop to run in 24Hz, 50Hz or 60Hz in eyefinity mode. No sync or tearing issues here.
I did try 24p footage though, and the difference in judder is noticeable (and noticed my MediaplayerClassic's playback statistics)

After a week of testing the hidden iZ3D side by side "span" mode.
There's a good reason why it's hidden : it's still very buggy.
There are very few games that run 100% perfect, the main issues are usually mouse pointer related and a difference in aspect ratio between 2D elements (hud, menu interface, etc...) and 3D elements (the rest of the game). However most games are playable and display with perfect sync, which is great !
My only real disappointment is that all Source-engine based games (HL2, Left4Dead, Portal 2,...) show a black screen ingame, and therefore are unplayable on the dual-projector.
I have high hopes that the situation will improve if iZ3D keep working on it and be as useable as any other output.