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Seeing a dramatic full black was the only thing I really missed with laser dimming turned off, so it would be great to have a mode that only impacted that situation.Īnother new feature JVC announced for both this model and the DLA-NZ8 is an optimized high contrast light engine designed to eliminate uniformity issues caused by reflections within the light path or optics. Ultimately, what I would really like to see JVC implement is a third dimming mode offering the ability to turn the laser off with a full blackout. I could see most viewers happily using it, but I can be a bit too picky and was content to leave it off. The feature did seem to work better with HDR images than SDR ones, which means it may benefit from the frame analysis that JVC uses for tone mapping. The good news here is that, with the NZ9's already high native contrast, laser dimming isn't needed for the most part. This would result in slight changes to color balance, mild highlight clipping, and a muting of detail in bright objects, and it also decreased my subjective perception of contrast. The dimming would improve black levels at times, but there were also quite a few instances where highlights and brighter objects were affected though the black floor didn't share the same benefit. Any dynamic modulation system on a projector will always have issues with gamma modulation and clipping, and I found the NZ9 to be a bit too aggressive in dimming low- to mid-bright image highlights. That's not to say the JVC's laser dimming is perfect.
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This was probably my biggest gripe with the RS4500's laser dimming and it has definitely improved in this new implementation. The NZ9's laser dimming also didn't display the RS4500's aggressive tendency to black-out images that should be visible during very dark scenes. (This may be addressed in future firmware, though I didn't get confirmation of that from JVC.) Blackouts still looked very dark and anyone would be easily tricked into thinking the projector was displaying a full black. Mode 2 on the RS4500 would go to full black-out when displaying a full black field, but the NZ9 does not. With laser dimming engaged, contrast increased substantially with Mode 1 reaching close to 470,000:1 and Mode 2 hitting around 560,000:1. Maximum native contrast with both apertures fully closed and the projector in its longest throw was about 123,000:1, but even at minimum throw the projector could still deliver close to 100,000:1. I did full contrast testing and found that the native contrast at full output with no aperture closure was about 28,000:1 at minimum throw and closer to 50,000:1 at the longest throw (uncalibrated). JVC lists the NZ9's contrast ratio as 100,000:1 native (no laser dimming) and infinite with dimming (based on the laser turning off for a full black frame). But given the higher light output of this new design compared with the NX series, there is a very appreciable increase in brightness, and it runs quieter in any given picture mode. When I measured DCI-P3 coverage (within the BT.2020 container) the NZ9 came up a bit short in its non-filter mode (labelled as BT2020 in the color profile menu) at 87 percent coverage. With the color filter in place, I was able to achieve 98 percent of DCI-P3-similar coverage to the previous NX series. 709 (the standard HDTV color gamut) was 100 percent as expected. Native color gamut coverage from the NZ9's laser light engine was similar to what I've measured from other blue laser designs. I hope to see future JVC designs start to push this envelope. We're already seeing other manufacturers use dual-color laser light engines capable of hitting full DCI-P3 (a color space used for HDR programs on disc and streaming that is a limited subset of the full BT.2020 Ultra HDTV color gamut) without light loss, and even true RGB-based designs offering near-BT.2020.
#Spears and munsil hdr plus
Given how long it has been since JVC released its first blue laser phosphor light engine, I was hoping they'd move to a design that used more than just blue diodes plus a filter to deliver wider color gamut coverage. With the NZ9, it was close to 30 percent in the High Laser setting, and 25 percent in Medium or Low. Enabling the RS4500's color filter resulted in a loss of 40 percent or more total light output. But a concern I had-one originating from my experience reviewing the RS4500-was light loss related to the color filter (labelled BT2020 in the Color Profile menu), which is used to achieve a wider color gamut. The NZ9's uncalibrated light output met the company's 3,000-lumen spec (I measured 3,069 lumens) and calibration lowered light output by about 20 percent, which is typical for JVC models I've tested in the past.