Originally Posted by darinp2
One thing that might help is to keep in mind that JVC has already done a great job of reducing the number of scenes where CR is a problem*. There are only so many "problem" scenes left. The percentage of these "problem" scenes where the DI will help is higher than the percentage of overall scenes where the DI will help.
I hope it is clear that the DI really isn't going to provide visible improvements for average images. I wouldn't want people to expect that. It is for some of the difficult stuff that was left.
* I know they could improve ANSI CR and help some other scenes, but I'll save that discussion for another time.
Gotcha. I had dialed down my expectations on what the DI was going to do long ago, but then some actual visual reports sound more enthusiastic than what the sober technical language seems to suggest. So it can be a tad confusing as to what to actually expect on screen.
I presume that the distinctly "better" or deeper black levels Kris reported were using the darkest, low APL images. The new auto iris dialed the brightness/black level deeper than Kris' projector can achieve, while manipulating the gamma to maintain visibly brighter details in those scenes, for an over all look of "deeper blacks/higher contrast."
And of course, in another way the auto iris can make even lots of brighter scenes look "better" insofar as some owners of previous JVC models have dialed down the manual iris for deepest black levels, living with the trade-off of duller mixed/bright scenes. The new model will bring punch and higher ansi (just by increasing brightness and the effects of opening the iris) for those brighter scenes, keeping the darker scenes dark.
Something I've noticed occasionally with my JVC projector (RS55): Sometimes I can see effects that *look* like screen wash out, but I surmise has to do with the projector itself. I noticed this mostly because I happened to start watching a 2:35:1 movie without my masking activated. When a really bright scene came on, the 2;35:1 black bars clearly rose in brightness with the image. However, my room was virtually a "black pit" when watching - the blackest Fidelio black velvet lines every wall surface, as well as the floor right out to the viewing sofa (I sometimes lay black velvet on the rug to extend the black area under the image). Only the sofa is not pitch black velvet, but it's very dark brown material and in the "flashlight test" reflections from the sofa are undetectable to me on screen. Hence, I can't see it being the room reflections and surmise this has to do with light contamination within the optics/light engine or whatever, of the projector. Would that make sense?
(Boy, whenever I make the "mistake" of having the masking off, it reminds me I couldn't live without masking)