Originally Posted by HoustonHoyaFan
Again, nowhere in that paper does Darin state that "NATIVE" on/off is most important. Quite the contrary, he has posted many times that he wishes JVC would add a DI to it's projector.
I am not saying native (static) CR is not important but by saying native CR is the most important you are suggesting that we go out and get the pj with the highest native CR and it will be the best.
He changed his mind later after he tested ANSI contrast effects on the visible differences of the image and determined in scenes he couldn't tell the difference by EYE the effects that ANSI contrast had on intrascene contrast between the JVC and a DLP. It is in the JVC thread as well as the ANSI testing he did. You can ask him yourself with a PM. ANSI contrast is more likely to affect really bright scenes with mixed brightness and darkness, but it's nearly impossible, although not completely impossible, to equate these effects to our own eyes for many reasons.
You guys are still misunderstanding what I am saying about the DI. Yes, the DI helps, I don't mind a DI at all. It has limitations though. Again, for one final explanation, we are not debating if a DI helps or dynamic contrast can help either, what we are saying is that the way it is MEASURED is worthless.
I am also saying that the projector with the highest native contrast will do dark scenes the best. That is easily known to all of us that have seen all these projectors, since you can literally just about put them in a row based on native contrast levels as far as how dark the blacks go. The DI can offset this, but it will create a bit muddier looking blacks with less intrascene contrast (given all things being equal).
My own tests showed something a little less extreme than Darin's, so in my own tests they seemed to show that ANSI Contrasts matters a tiny bit, but not enough to be able to place the importance of ANSI contrast in very discernible fashion. What I mean is I am sure it matters some, but you can't put a value on it very well, every projector is different in the way it acheives intrascene contrast as an extrapolated result from the measured ANSI and Native at different white level mixtures that it is capable of.
I am not saying ANSI contrast doesn't matter, what I am saying is that it's not possible to know how much ANSI contrast a projector has affects a scene for the actual intrascene contrast, just like its not possible to know how much native contrast might affect a scene exactly. The difference is with native contrast, we can visibly see that most (if not all) projectors with higher native contrast do darker blacks. With ANSI contrast, there is no simple thing we can equate visibly with our eyes, although subjectively I think it increases bright scene contrast when you have projectors with higher ANSI.
Each projector is different, you'd have to measure 50+ different tests to try to determine it and average it all out.