Originally Posted by R Harkness
That's what we were concerned with earlier in the thread: whether you lose control of setting the brightness (peak) if you engage the DI. Somewhere buried back in this thread I believe we learned that you can indeed still set the brightness manually while having the DI working. (I think it was Mike of AVS who wrote that the manual iris would still be used to limit light output and the DI does it's own thing, though I suppose strictly speaking that still doesn't say that they can be engaged simultaneously).
ETA: Maybe it was in another thread that someone posted a video of the new settings, and you could see that there two individual sliders, one for brightness the other for the Intelligent Aperture control.
I haven't seen that image and didn't look in the menus at CEDIA. I got what I considered a very clear answer there from the Japanese manager and Japanese engineer as far as the lowest end model (49 or 4910), since it only has one iris. They said that for DI enabled the iris uses the full range for white and does not depend on the manual setting at all. They were actually answering for all models, but later I went back to get clarification for the models with 2 irises. This time only the manager was there. I asked him about the models with 2 irises and he wasn't sure if the back iris would open up for DI enabled mode or if it would stay where it was at the last manual setting. It was something he was going to need to check on and I just mentioned that it should be tested to make sure it doesn't cause a problem, as I mentioned earlier.
I wonder if the control you saw for the "Intelligent Aperture" was just between off and the 2 enabled settings.
On another subject with the iris I was told that one setting would be for having the gamma change with the DI and the other for having the gamma not change. I explained to somebody else at JVC that "no gamma change" can mean 2 things. It can mean no gamma change at the chips or no gamma change for the light coming out of the projector. The former would mean gamma change on the screen (doesn't seem like a great idea) and the later would basically mean some clipping of near whites, like the Planar's do for some cases.
In case that wasn't clear, I'll try to explain another way. Consider a case where 50% video level is 2 ft-lamberts off the screen. If the DI closes to cut half the light the projector could do nothing with gamma and make that level 1 ft-lambert for that case, meaning the gamma for the images off the screen changes. Or they could employ adjustment to the chips to counteract the iris closing to keep 50% video level objects at 2 ft-lamberts off the screen.
I don't know which one (or something similar) they are referring to when they say "no gamma change".