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Buying Optoma GT750E, but which glasses?

post #1 of 6
Thread Starter 
Are Xpand X103 or Xpand X104 any good?
Will they work with Optoma?
post #2 of 6
For my GT750(e), I have the Optoma 3D-RF glasses (with emitter) and they work pretty well.
Pros:
* Big fan of recharging via USB vs. buying new batteries like some other glasses.
* Long battery life.
* Relatively comfortable
* Automatically stop "shuttering" when there is no 3D signal
* Stay synced even when there is interference (see cons)
* Lightweight

Cons:
* Interfere with other RF signals (as far as I can tell). I have Logitech MK710 wireless mouse/keyboard and they have never given me trouble, and still don't, until I fire up these 3D-RF glasses, and then they start having connection problems intermittently. I can sit in the right spot and it won't happen though, so you may have better luck!
* They cut down the brightness/contrast a bit, and the colors look worse. This is my biggest complaint, but I think it's more about the tech than this particular pair of glasses.
* Cheap plastic feel (though they've flown across the room a couple times from me tweaking things and spinning my head to see the changes, and they are still going fine, haha)

keep in mind, i haven't gotten farther away than ~10-15 feet from the projector, so I can't speak to range.
Also keep in mind that these are my first (and only) 3D glasses, so take everything I say with a grain of salt.

Let me know if you want more info, also PLEASE post what you end up getting. I'm looking for more glasses, and I want to try something different, just for perspective
post #3 of 6
BumpingBocaj,
Do you see any ghosting/crosstalk with the RF-glasses ?

Is 720p enough resolution for you ? What size screen are you using ?
post #4 of 6
I have a GT750 with 106" diagonal 1.3 screen. Sitting about 12-15ft away I see no pixelization. At about 8-10 ft or closer I can start to see it. I very satisfied with the 720p resolution at this price range.
RF glasses are close to perfect with ghosting/crosstalk. However if you angle them slightly with respect to screen (ie laying in a lounge chair head tilted back) some ghosting appears. Sometimes I manually 'tilt' the glasses to be parallel to screen surface while I'm lounging.
post #5 of 6
@The Big Picture
About Ghosting:
No real ghosting, no. With normal viewing, I doubt you will get (much) ghosting, unless you are viewing things with a TON of contrast AND your head is tilted > ~20deg (educated guestimate). Even so, you can tilt them slightly like Derek mentioned, which isn't a big deal... I only notice ghosting when there is light next to dark, and I take off the glasses and tilt them extremely... and I'm even projecting onto a white sheet suspended in air right now, which should be exacerbating the problem.

There are more glaring issues that pop out first before ghosting. Primarily I mean the contrast and brightness loss with 120hz and glasses on, but this can also be compensated for by tweaking brightness/contrast on the projector to have even colors (nothing blown out, but probably really dark), and then increasing the gamma only in game. This works well for me in GTA 4.

Note: when you turn on the GT750's 120hz, you lose a lot of brightness/contrast/color accuracy. I was disappointed at first, but at this price point it still is better than all the other options I've read about.



About Resolution:
720p is fine, but for gaming it's only just fine. I wish I could run 1080 (and preferably i would run 1920x1200!), but 3D requires so many frames per second to be pumped out that I have to scale down the resolution anyway (I'm running i3 2120 with Crossfire 5850s, not top-of-the-line, but no slouch either). I'm happy to go 720p however, because low framerate 3D gaming sucks, there's no getting around it. You see more rainbow effect in low framerate 3D as well, and is more headache prone in games where you turn a lot (when you turn, your eyes are stair-stepping along the turn 1 frame apart from each other, which funks with your brain == headaches/eyeStrain).
If I didn't want to push the industry towards better 3D (and have fun doing it I would probably look for a low latency 1080p projector. The GT750 and H5360 are the only ones (that I know of) with "0 input lag", which is the only acceptable option for me since I do FPSs mostly.

About 3D Settings:
Be Patient!!! Try things, experiment. Expect to spend 30 minutes for EACH DIFFERENT GAME changing settings until you get something you like. Each game is different, there is no catch all convergence/separation setting. This is because each game uses a different viewport/FOV, and even dynamic ones (like GTA4). USE YOUR PRESETS. Set one for close in, one for medium (or "lazy" mode), and one for far out. I haven't found the iZ3D driver's autofocus to help that much.
post #6 of 6
Thanks for the replys.
I would be sticking mostly to 3D Blu-ray movies.
Have always wondered how big a screen and how close to it you could get, before the pixles get too big, when using a GT750 .
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