Polarized stereo 3D using 2 projectors + cheap foil filters

Are you travel through all those forums about 3D with one ambition to show off with yours experience or knowledge on this subject. Because you wrote yours article based on peoples experience from Forums like this one - which are about to evolve with some projects not to change theirs way.
I stopped to read yours answers few posts ago when i realized that all what you do is simple counter-strike. You don`t need to be master to put opposite opinion.

Fair enough Skaut. I didn't come in here to rain on anyone's parade, I'm sure your high-res dual projection system is the bees knees.

Having said that I wouldn't have felt right not rebutting some of the 120 Hz AFR hating that it seemed to me is born of prejudice based on an obsolete implementation. As I said before, I simply think folks should give both a try before putting down their cash. It sounds like you have considered the pros and cons of each and have experienced both before forging ahead, and that's the right thing to do.

I don't think it justifies a separate thread but on a side note I am extremely interested in learning specific polarized/vs/120 Hz AFR anomalies that I can recreate in the games you mentioned. I try to be extremely thorough in my reporting and if I'm missing a big side of the story I'd like to know exactly what that side entails, so if you have specific info you can share please PM me!

Best regards,

- Don

I think you're missing the point, which I've just made clear in the paragraphs above.

It's not about raining on your parade, it's about challenging prejudices and letting folks know their options.

At the beginning i felt like you are that kind of guy who can give some great ideas about this project but right now you are someone who shout with his opinions when he thinks that others are wrong. You can easy see that from such big Forum only few mates pick up this subject and decide to participate in development. The rest have theirs mind to not bother or to choose another 3D solution but non of them are here to spoil someones ambitions.

We are more about Simulators not much about which 3D will be the best for us. That is only addition or evolution of ours projects. If you want to help i will be appreciate and will gladly welcome you in ours community.

Well I'm sorry you feel that way Skout, as I said that's not my intention.

By intention was to rebutt a lot of extremely negative anti-3D Vision comments that I see as untrue and unsubstantiated.

I don't feel I've shouted my opinion any more than anyone else has, but I wasn't comfortable sitting idly by and allowing what i saw as unsubstantiated hating based not on current experience with the solutions but based on prior prejudice and theory.

I am actually about to ask you some questions about this one since you have experience not only with 3D Vision.

What about that screen. I made one, like you have seen from aluminum and i know about others pained ones. What is yours advice or maybe solution.

I am also about to change those filters on the projector - what is yours suggestion.

Please stick to DIY solution and low cost as much as it is possible.

unsubstantiated hating based not on current experience with the solutions but based on prior prejudice and theory.

Hating? We must be reading a different forum. There is no reason to defend against opinions. If you look around, we are here to experiment for the best solutions, while helping others. The community contributes and it is a win-win situation for everyone.

I don't necessarily agree. I find that unsubstantiated opinions based on misinformation can often lead to the propagation of that misinformation, which I don't think helps anyone.

Come on Cleeve - what about that screen and filters?

Screens: I haven't looked around a lot, I found the Awater3D screen worked really well though, and I don't think $120 or so is an unreasonable price. I forget the exact price but I think it's in that neighborhood. You can ask about it at Awater3D.com

Filters: after I wrote the article I discovered you can get REAL CHEAP filters specifically for polarized theatre use, but I haven't personally tried them.

Look here:
http://www.berezin.com/3d/3dglasses.htm
(the filters far down the page)

Good lord man! Gimmie a second!

I have posted actual prices from Awater - those prices are from 328 Euro for the smallest one. Not so bed tho - if you really think that they are great quality. On this aluminum one i had problem with light reflecting in center of the screen. That is why i have it as a curved one - there is no light reflection at all but i really think like i want something on flat surface.

I will also try those glasses from Berezin. I am about to buy some of those big ones which IMAX is using - this are made from thick plastic and looks tough.

That is bizarre. Here's an excerpt from an email I got from Awater3D regarding the screen they sent me for testing:

The prices for fabric only is 95,00 USD and with 5cm black border, eyelets and strips is the price 145,00 USD.

You should drop her a line and mention the article and the price and say you'd like something similar if you're interested.
Monica's email is info@awater3d.com.


The Berezin glasses are nifty, but did you see the projector filters they have there? They're selling a set of 3x3 polarized filters for projectors for $14 a pair!

How different are linear and circular polarizers filters (i know how they work, but i mean picture quality)?

I personally found they're not all that much different. The hardcore 3D community seems to be of the opinion that linear is the way to go because of cost, and because it actually does a better job of blocking the light from getting to the wrong eye while letting more light intended for the correct eye past the filter.

Circular filters do have an advantage in that you can tilt your head a little more without losing some polarization, but even if the polarization is intact you're going to lose the 3D effect because the 3D video itself assumes your eyes are placed on a horizontal plane.

Cleeve - what size of screen did you get for this price (95 $) ?

It's about 110 diagonal, 4:3 aspect ratio. If you're using it as a widescreen you'll get just under 100 diagonal or so of screen space.

I should mention the screen does have a drawback, it's quite susceptible to crinkling. You have to be careful with it when setting it up otherwise you'll get a permanent crease or two. It doesn't ruin the screen for usage, but it does leave a mark you can see if you're looking for it. That's why the elastic strips are good for mounting, to keep it tight.

If you talk to Monika, let me know what she says. I'll be disappointed if she quoted a low-ball price that she doesn't offer in reality. I'm sure that isn't the case though, she was professional to deal with, although sometimes hard to get a hold of.

Tell her Don Woligroski from Tom's Hardware sent you.

One more... did you already test 3D Vision with new drivers. I am about 3D Surround.

I am wondering how much those bezels mess with 3D immersion. On big screen you have open space and some things from the center of screen can fly out of screen. until they hit to the edge of screen. On 3xLCD you have this type of distraction and edge of immersion in the middle of your view.
What you think about that, did you already give it a try.

I think you had this one: 4:3 - 2.000 x 1.500 mm (Screen material only) which is for about 328,00 € on retail sale. I don`t think that she is going to drop this price so much down. Maybe it will help when we will decide to make multi-order.

Sorry, I wasn't available when Nvidia asked us to look at that, I haven't tried it personally.

My managing editor Chris Angelini took that story on, he reported on it here:
http://www.tomshardware.com/reviews/3d- ... ,2672.html

I thought games or films have to be designed for 3-d?

Is this a real 3-d experiance for racing games.