I am considering getting the Mits wd-65732. I have been reading about concerns some people have about rainbow effect. Now, I have the Infocus 4805 projector which is also dlp. And have never noticed the rainbow effect...neither has anyone in the family. So I am assuming they are using similar tech. And that if I didn't notice it on the 4805...I shouldn't notice it on the Mits?

Thanks!

Your theory sounds valid. If you don't see them on a projector you probably won't on a rear projection. BUT, buy it at a store where you can return it if for some reason you do have a problem.

I've been thinking of starting a thread on this subject (DLP rainbows), but I haven't gotten around to it.

My first generation projector was a BenQ PB6200. I could easily see rainbows, but they didn't bother me much. Most of the other viewers in my household couldn't really see the rainbows at all.

After a couple of years, I got the upgrade fever and bought a BenQ PE7700. This projector has a multi-segmented color wheel, and a faster wheel rate. Now I really have to work at it to even see a rainbow. No one else in my household has even mentioned a rainbow since the new projector went up.

So, my question is, how many people still have a problem with DLP rainbows using the newer color wheel technology?

Thanks in advance for any replies and/or discussion.

The thing with RBE is that it doesn't effect everyone, and the ones that do, see it differently. It's all up to the viewer. Fast color wheels do reduce the effect, but it may still be there. Best thing to do is check out the TV you want at a store, and see if you see it, especially on darker pictures.

My experience: My uncle-in-law had a DLP projector, and watching the Anakin/Obi-wan fight on Episode III showed quite a bit of RBE. Saw the Samsung HL-S5687W at BB, and saw less RBE on darker pictures (probably because of the color wheel improvement). Then saw that Samsung HL-S6767W at Costco, and saw plenty of RBE on that.

Decided to go with Sony KDS-55A2000 SXRD—no possible RBE—and am quite happy.

If you don't see RBE now, you probably never will, especially since they are trying to improve it.

Count me and my wife in. We just had to take back the Samsung HL-S6186 DLP 720p tv. RBE, eye strain and brutal nausea for me. My wife was getting eye strain and headaches from it. I really liked the tv image quality, but couldn't fight my way thru the nausea.

Best thing to do is check out the TV you want at a store, and see if you see it, especially on darker pictures.

With store lighting, RBE is almost impossible to see. It really only shows up with low lighting. In a dark room I can see RBE easy, on the sales floor, its impossible to see even a trace of RBE. People who have DLPs at home and see RBE, should just increase the ambient lighting in the room.

Brutal nausea?? Jeez, I could be spinning in a barrel watching a DLP and I don't think I would get brutal nausea. My eyes are VERY VERY sensitvie to RBE and even computer monitors that have less the 75hz refresh rate, make my eyes tear, I wonder what causes the nausea for you??

I still see it on 2006 model DLP sets. I wouldn't go so far as to say "brutal nausea," but it's a definite strain/mild headache after 30 minutes or so of "serious viewing" (such as a DVD movie, as opposed to regular old TV).

In my experience, the absolute best test for rainbows is the THX Optimizer. Take a look at the "circle" test patterns. If you don't see rainbows flying off of them, you'll never see one. My girlfriend thought I was just making them up, but the circle pattern really changed her mind.

DLP sets with LED lamps are a new wrinkle. Supposedly, they still CAN exhibit rainbows, because the RGB LEDs are still timed (i.e. not all displayed at once), but switch much faster than any color wheel can ever achieve. So it supposedly eliminates the effect 99% of the time. I'd love to try the THX screen out on one of them...

I have the Benq 6200, never seen the rainbow nor have others complained. I have roughly 300 hours on it. Used as home theater proj in a fairly dark room.


PJK

Here is some information that I've saved.

What causes the rainbow effect? (http://www.avsforum.com/avs-vb/showthread.php?p=7883413&&#post7883413)

What can I do about Rainbows? (http://archive.avsforum.com/avs-vb/showthread.php?s=&threadid=333188)

The second link is from the 2003 HLN model year but if you see rainbow effect then it applys to any color wheel based microchip display.

This link (http://www.dietforum.net/balagee/projected/rainbow.html) has a simulation of what rainbows look like to some people.As for Samsung's new LED (2007) sets:

Collinp's Analyses (http://www.avsforum.com/avs-vb/showthread.php?p=10030350&&#post10030350)

I could see rainbows on the 56 inch 1080p Samsung DLP that I had. Any time there was white or bright near-white on a dark background it was very bad. Thing is I didn't notice it in the store under their bright lights and with their bright source material. A shame really, because I loved the design and brightness/crispness/resolution of the set otherwise, the lack of burn-in, etc.

So yes, some people still see rainbows with the newer wheel. My wife did not, and she was not particularly happy with me taking back the set that she had picked out and bringing home a rather hideous Panasonic plasma in gray :o

I'm very sensitive to these though. I can see a sort of rainbow effect on my plasma with white text on a black background, I believe it's said that that's from phosphor lag. It's not nearly as bad as the DLP's effect, though, it's very livable.