This would be great for us with smaller screens!
This is an option I have always used on my JVC and my Sony projectors in the past. It is pretty vital for anyone with a smaller screen, especially SDR content where you do not want the maximum brightness over 100nits.
I will add my vote for this too, I got my test unit in, and I would really like this option also.
Thank you for the discussion and feedback. We have noted this requirement. Our current dynamic iris solution is the version that delivers the optimal viewing experience after multiple rounds of tuning. Regarding the JVC dynamic iris you mentioned, which allows manual adjustment of the range, could you please specify the exact model? Additionally, would it be possible to provide a corresponding video for reference?
All recent JVC lamp models behave the way I described. The iris can be set manually between 0 and -15. As an example, I may set it at -6 to achieve 70 nits peak white for SDR, and if I then switch the iris to Auto, during dark scenes the iris will close down when required to improve the black, but it will never open beyond the manual setting (-6 in this example). The laser JVCs do not have dynamic iris, they only dim the laser power in dark scenes.
Thanks, Chan. Noted. We did test other iris operating ranges before, which resulted in several negative impacts. We'll take another look at this function.
Someone says below, basically nomartifacts when using the iris system, I just watched that French video of the Titan Noir Max and in the spears and munsil scenes showing the lizards it looks like the brightness in the background slowly fades blacker, that to me is an artefact unless it’s unique to the French reviewer and a setting he has wrong. Can someone with the spears and munsil UHD disc test this in Dolby vision.
I suggest modifying this slightly to allow the user to set both the high and low limits of the dynamic iris. Want the best artifact free performance? Keep it where it currently is going from 4-5.5. Want it darker? set the range to 5.5-7.0. Want maximum range? set it 2.0-7.0.
That's a somewhat different behaviour, already requested here: https://xgimi.userjot.com/board/p/f2---f7-dynamic-iris
It feels like there is a UI solution where the two features could be combined. It is all about letting the user decide where in the range they would prefer to sit from a brightness / contrast perspective.
It would be great to have options that either go blacker or go brighter. These shoudl not replace what has already has been developed. It is very good.
As a tester who currently has this projector I want to caution everyone to be very careful what you ask for. The DI + DBLE combination right now is basically perfect with zero visible artifacts. If you guys start to get greedy and want to push it you are going to end up with pumping, color shifts, and clipping. I don't understand why anyone would want to argue for these things.
For more information, currently, the Noir clamps down in Dynamic mode to about f/5 or so for dark scenes. This reduces iris "pumping". It would be a great feature to allow the user to select how far the iris clamps down in dark scenes. For example, there could be one option that uses the full range (f/2 to f/7) of the iris (and has some pumping artifacts), another option that allows for the lowest black floor but reduces peak brightness (say f/5 to f/7), and another option that allows max peak brightness but a raised black floor (f/2 to f/5). Currently, there is only the option for the last option.
I think Rob mentioned this is intentionally done to avoid things like pumping artifacts?
Right. But there might be a way to accelarate the iris speed or to allow the artifacts if one wants the better dynamic range.
Would be great, if users could set themselves from which f to which f the dynamic contrast is allowed to work. Cherry would be different settings possible for SD and HDR material and different modes like Filmmaker, Gaming, etc.
I second this as well. As Dominic Chan said, it also allows user to have different settings for SDR and HDR and that is my primary use for this setting. JVC does it right.
From some initial testing, it appears that of the two iris, the front iris (post DMD) acts dynamically in Dynamic Iris mode and the rear iris (pre-DMD) remains relatively static in dynamic mode. If this is the case, a simple solution to implement this feature request would be to make the rear iris adjustable while in Dynamic mode. This would allow the user to adjust overall peak brightness (like for SDR or smaller screens) using the rear iris while the front iris would continue to act dynamically (hopefully closing, as another thread requests, all the way down to f7!).