Not all DLPs are equal, so try and demo the one you are most interested in. Or if you really want to be sure demo something cheap like the Infocus X1 with it's slower colour wheel. If you are OK with that then you are OK with anything.
Once I'd seen that the wife was fine with DLP and how much nicer DLP was over LCD I thought, sod the friends. 95% of the watching is just the two of us. I'll take the chance on the rest of them!
When I first got my HT1100 both me and the misses felt nausea creeping on. After getting advice from this very forum I found that the nausea is eliminated by sitting no closer than 2x screen width. This has to be to do with not having to scan your eyes across the picture so much when sitting too close which would in itself bring on the rainbow effect... let's face it, when you want to induce the rainbow effect people suggest wiggling your eyes left and right in dark scenes with areas of "light" in. So for me and the misses sitting further back means that the picture is still large but a whole lot more enjoyable from this wonderful DLP projector.
I have to guess (not being trained in such matters) that it isn't exactly an optometrist question since it isn't (I think) about focus or optical sensitivity per se but more about the speed with which either your eyes or brain can detect changes in what you see.
Long before DLPs and their rainbows, long before widescreen TVs, Sony produced a 29 inch (4x3) TV with 100hz.
Walked into the local Sony Centre with my colleague. Immediately I can pick out the 100hz TV - the lack of flicker is immediately obvious to me. Whereas, he doesn't have a clue what I'm on about.
10 (?) years later and he now admits he can see the difference.
Visibility of CRT refresh rate flicker and rainbows is, I suspect caused by the same thing - can I call it 'fast eyes'? And, my sevsitivity is certainly getting worse (ie more sensitive) as I age. The evidence from my colleague, starting from a less sensitive point, is the same.
And the pojnts made by others here are well made. At worst, you see, and are nausated by, DLP rainbows almost immediately. At best you have no idea what the problem is. In between and you may find yourself becoming 'tired' or uneasy at watching - without being able to detect exactly why.
As for keeping your screen size small and/or staying far enough away from it to avoid lateral scanning to keep rainbows at bay - this is surely tending towards defeating the whole point of home cinema - to get (close to) a cinema-like experience in the home. Rare, I think, to go to the cinema and not have to laterally scan a wide picture. Might as well buy a TV?
Roll-on 3-chip DLPs at realistic prices Until then, it's LCD (with its greyish blacks) for me - no contest.
Nigel, sitting 1.5 to 2x screen width back isn't that unusual... It's what most people recommend. I just happen to sit 2x screen width back to get over my DLP viewing problem. So from 12 foot back I look at a 6 foot wide screen... still looks big to me and much better than watching it on my tv. Oh and did I mention how nice the blacks are?
Indeed. In my case, I sized my screen according to the largest size I could fit into the space available - it is 8 feet wide or thereabouts. And I sit about 12 feet back. Too close, I think for avoiding lateral scanning.
My point was, that I wouldn't consider using a smaller screen (to circumvent the rainbow issue) as being preferable to the (admittedly) greyish blacks - but otherwise artefact-free image I get from my LCD. My next projector (given the current state of the market) will be another LCD.
Actually, I doubt even with a 6-foot screen at this distance, I'd not have a problem with DLP.