CurtPalme.com Home Theater Forum

[KrisRoberts]

Thanks for all the replies and information. You guys are great!

I think the performance of the NVidia kit could certainly be improved with timing adjustments. The fact that the desktop monitors and G90 behave differently makes it clear to me that subtle adjustments would help.

But I dont think it would ever be perfect on the G90 with stock tubes at 100Hz or above. And the novelty of 3D isnt compelling enough for me to seriously consider swapping tubes and dealing with the color issues.

I'd much rather keep a world class 2D image on the CRT and play with some of the reasonably affordable 120Hz DLP projectors for games and stuff in 3D.

[Francis Vaughan]

[Francis Vaughan]

Following up on my own posts about dichroic filters. I suspect that I have overlooked a vital issue with a dichroic filter placed in front of the tube. These filters are only useful (i.e. the wavelength of light they are tuned to remains constant) at angles of incidence less than about 15 degrees. This constraint is likely to be violated for a filter sitting in front of the tube. I suspect a sufficiently important fraction of light will come thought he filter at greater than this angle, and thus one would get shifting of the filter enough to render it less than useful. The cost of the filters has also proven to be a bit of a sticking point.

I think I'm back to tinting the glycol.

[noos@xp37+]

Hello, I created that post because I also have the bottom ghosting with 3d vision:

https://www.curtpalme.com/forum_archived/viewtopic.php@t=24929.html

You can read there that it is because of a small delay of the USB signal in the USB path through the Computer and it´s mainboard. The link with the solution provides only two mainboards that work, but I would like to the CRT users post their mainboards, and if they do ghost or not with nvidia 3d vision. Probably you can add your´s too....

Best regards from Munich


Marc

[zich6]

Has anyone seen a spectral anaylsis?

[Alan Head]

I have spent a considerable amount of time experimenting 3D over the years with different shutter glasses. The following may be of interest :-


Setup :-

G90 CRT Projector with P19LUG tubes, HTPC based on ASUS P7P55D motherboard, Blackmagic Intensity Pro 1080i capture card. Radiance XE+ 3D Video processor.


Glasses :

Nvidia 3DVision
Edimensional wired via VGA dongle
Edimensional IR via VGA dongle
Samsung SSG 1000 modified to run from Edimensional VGA dongle.

Conclusions :

NVidia customer support non existent when you are using CRT technology despite their own spec saying system supports CRT monitors with high refresh rate capability. NVidia glasses look good from an aesthetic point of view but suffer from severe ghosting (on IIyama CRT monitor as well as G90)

Edimensional glasses work well with virtually no ghosting but image rather dark.

Samsung glasses offer best compromise, much more light coming through than Edimensional and virtually no ghosting.

I have improved the ghosting on Nvidia glasses by running a much higher vertical resolution than I need and then overscanning the picture to get it where I want on screen. This improves the ghosting at the expense of bandwidth. So the big problem with NVidia is a lack of sync adjustment for the glasses.

Other Info :

I have just bought the Radiance XE+ 3D and as it develops with full CRT 3D Support I hope to settle on one type of glasses. I suspect with the Radiance 3D, Sync will end up really good (Lumagen customer support is in a different league to NVidia) and I am sure P19LUG tubes will be fine. Watching Avatar in 3D via the Samsung Glasses the image is pretty impressive with decent 3D depth and no ghosting marring the experience. Once I have greyscale/colour calibrated the 3D input through whatever set of glasses I decide to go for I know it will look even better.

I look forward to the day my NVidia 3DVision kit can be removed from my system.



Alan Head

[mp20748]

Earlier in the week I got to play around with a really cool set of 3D glasses. They were of course the passive (not battery operated) type, but the best I've seen so far. And I got to compare them to one of the very best Active (battery operated) sets out there.

I was blown away by these very light and inexpensive glasses. And they restricted very little light..

Under the critical 3D test pattern evaluation, they did VERY well.

I'm not familiar with any of the consumer glasses out there, so I would not know how well they would perform in comparison.


http://www.globalspec.com/FeaturedProducts/Detail/AmericanPolarizers/3D_Eyewear/76492/0

[overclkr]

Guys, I will be getting the Radiance soon and was thinking of picking up this set to go along with the Moome V3. Anyone have any experience with these?

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150547542857&category=21092&_trksid=p5197.c0.m619

What do you guys think is the best solution right now to use with Moome/Radiance?

Cliff

[KrisRoberts]

I dont know about the glasses in that auction, they look really dated/old.

Talking to Moome, the emitter that sounds good is the "Gen2 Universal Emitter" with a vesa/stereo plug adapter available from these guys:
http://www.3dmagic.com/catalog/Gen2hometransmitter.html

That emitter is allegedly compatible with a wide variety of glasses. At CES this year there were a lot of vendors with Universal IR glasses that should be compatible with with the new crop of HDMI 1.4 TVs and projectors. All the projectors I saw at the show were using IR - I didnt see any DLP-Link.

My favorite active glasses were ACTIVEYES from Volfoni – their approach is to have the glasses themselves be very light (about 1 gram) and have the sensor, battery and electronics in a little pack you clip to your shirt. That makes the glasses as light and comfortable as passive ones but still working as active shutter glasses. They were also the only universal IR glasses which demonstrated that they were compatible with nVidia 3D-Vision (no other brand I talked to knew for sure whether theirs were or not and most seemed confused by the question).
http://volfoni.com/article.php3?id_article=238

Edit - HA! After I posted that I went back and looked more closely at the auction and it looks like its from the same 3DTV Corp guys and may be the same emitter Moome was suggesting. Still not sure about the set of glasses though...

[overclkr]

[KrisRoberts]

Yes, I have seen the Xpand 103 glasses and they are quite nice. They said they got a lot of flack for the previous versions of their glasses from the home market because they were really engineered for professional/educational/commercial use - not home theater. The batteries were hard to change, they were pretty heavy duty - you could put them in a dishwasher. But the 103 series are nicer and better suited for use at home.

I did write up a little review of what I saw at CES for anyone who's interested:
http://robertsmania.com/3D/ces2011.html

[overclkr]

[mp20748]

Nice writeup. It confirmed one thing for me, and that is that there's an entirely different section at Nvidia that deals with 3D imaging.

Nvidia is THE big boy in the industry when it comes to 3D. Pixar and some of the others use Nvidia for their Graphics and graphic 3D images.

The two rack mounted devices in the first shot are their Quadro Plex Graphic engines. In that particular application, they are using 8 (four each unit) graphic pipes that drives 8 each digital projectors. You would not believe what these cost each..



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The following shot shows two of the eight digital projectors in a double-stack setup. each of the two projectors have Beacons mounted right at the lens. The beacons are shutters that allows the two projectors to be used for left and right eye operation per screen. The projectors are LCD. And LCD unlike the newer technology, cannot be internally shuttered. LCD is not fast enough.

The signals from the Quadro Plex are converted to Fiber in the rack and converted back right at the projectors. Speed and timings are critical here.



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A setup like this will allow the use of both Passive and Active glasses. According to the readings, the industry is at it's norm with something new, because the standards are still being defined for consumer 3D.

I can tell you this based on what I get to see and play around with. The passive glasses will be the way to go, because they are light and do not require syncing (batteries, wires, IR, timings, etc) which is an headache within itself. They will require very fast electronics that will either switch the left eye and right sequencing either in the signal chain to the project or it be done in the projectors themselves.

It's called Frame Doubling..

.

[CIR Engineering]

[overclkr]

[CIR Engineering]

[overclkr]

[Alan Head]

[KrisRoberts]

I just bit the bullet and bought Moome's EXT V3 and the Gen2 emitter which should work with the nVidia 3D-Vision glasses I already have. The main goal is to get PS3 games working in 3D with my Acer H5360 but I will test it with the G90 and let you guys know how it works.

[CIR Engineering]

I talked to Moome the other day and he says that the Lumagen glasses sync protocol will be supported with the new IFB cards. So right now in theory you will not need the Lumagen sync dongle if you have a Moome board with the correct 3D output.

craigr