Any number of reasons, but I don't think it is the projector design. Because if it was, then all of them would be low and that does not look to be the case.
I get it, just like with "CMD" early on there was "no issue" and people had to push and post screenshots and data, then all of a sudden there was an issue, and one that requires a fix. I get that some of us are a bit different as we actual might take the time to validate manufactures claims, measure them, compare notes, etc... It just seems like something is off, or the handful of us that have measured are just unlucky as all are coming across units that measure quite poor to the previous year models. I can live with less than spec, what is hard for me to swallow is when people post they are getting 1200 lumens calibrated on low lamp, and I can't hit 1100 on high. Hopefully as a fellow enthusiast you can understand the concern.
Mike, this friend of yours, is his 640 from a later production run?Mine and a few others seem to be one of the early runs...I also noticed when I ran Autocal, I was GAINING a few % light output each iris step I calibrated colour temp on, now my LUX readings are already reflecting that, but it was interesting. Its possible the first run maybe had terrible colour temp calibrations from factory. Pull too much red and you need to shift green and blue WAY down to match.For eg, Red would read 120nits off the screen, green 158 and blue 147, then by the time you pull down green and blue, red also comes down a a bit with it, and you end up nearer 107 nits or so for eg.Its always Red which is lowest in light output. I also notice on my 9900 the OSD menu itself is VERY warm colour temp, I mean it looks almost like 4500k for eg, my 9500 menu looks like 7500K. this is the menu itself, and no matter what calibration, settings, adjustments are done, this menu is always the exact same colour temp... Its odd.
Cool, so one sample?I would like to see measurements.I know of now a bunch of units stacked in a room that are all dimmer than the last year models, and some of those have pretty high hours on the last year models.I am open to a massive bad batch of bulbs being the cause, and have said so.But excuse me when I say if I took measurements, they were done in an identical manner between the two units I have here.Also, the center of my lens is pretty great actually, I find the outer 3rd of the whole lens to be unacceptable.Here is a repost of a portion of a recent post I made on AVS, there is good news in here somewhere..Here is the center quadrant on my lens, I think I posted my bad lens shots earlier in this thread, which are only the sides... but anyway, i have no issue at all with the center portion.9900 on the LEFT / 9500 on the RIGHT.Pretty close. My 9900 would be widely accepted by most people on this forum if they had no idea what a golden 9500 looked like.Also regarding my brightness, which was one of the other major issues I had with my unit, Woofer who has a 9900 right now stacked in his room, also has brightness issues and light meter readings to show it, along with ARROW-AV, Kaoticr1 on AVS, So, actually, it looks like something is going on here, that's four units we now know of which are dimmer than the 9500 counterparts in a stacked scenario. ODD.Moving on, I took a couple more pictures this morning. Namely CMD definitely has an ongoing bug, which also affects CMD OFF and Low Latency OFF when the projector is first turned on and probably with some resolution switching, and CMD needs to be Cycled ON/OFF to remove the bug. Look just to the right of all the lettering when CMD is on, there is ghosting, it looks like a green convergence error, but it cannot be, because on the left side of my 9900, is literally the best convergence I have ever seen from a JVC. My bad convergence is all the way on the other side CMD on the new units introduces artefacts when enabled, and also makes the image softer. Nigel, I would love if you could look at the very same image I am looking at, photograph like I have, and we can corroborate data?I have 30 hours on this 9900 now... I think I have hit the wall in terms of comparisons, definitely until I get a new sample, but I don't honestly expect much to change. Let it be known I am EXTREMELY fussy! It doesn't help I have a golden sample 9500 here to compare to, what I call a bad lens is excellently sharp according to others.
I deleted the pictures, so the response would not be so huge. I sent CMD info to JVC and they have verified and passed it on, but They did say they can only see it on the text of the menu and only when up close to the screen. Said they could not see it from viewing distance.
Is there a bug with Low Latency set to Off? On my RS440, I see sometimes a weird soap opera motion effect with it Off. Seems better turned On. But I notice by default it's on so maybe it's supposed to be?
I don't use CMD at all - off 100% of the time.In my case, is it best to just leave Low Latency On? It's weird as I don't see the soap opera effect with Low Latency turned Off all of the time - just sometimes.
Current set up:Epson 5030UB on 115 " 16x9 2.4 gain screenLarge family room with plenty ambient light from 2 windows facing West and room opens into kitchen which has large sliding doors also facing West. Windows and doors have blackening curtains and/or blinds when needed. Most viewing is done in the evenings.Primary usage: 4k TV4k streamingHD streamingUHD 4K blurayXbox One X & PS4 Pro gamingWas looking at the Sony 285 but when it receives a 2160p 60p HDR signal with 10-bit color depth, it will internally process that signal as an 8-bit signal, which will result in visible banding on some material. I want to avoid that with the JVCs.I'm in Canada/North America so the model numbers tend to confuse. Looking at either last years DLA-X770 (RS520 in Europe/UK?). Or this years' DLA-X590 (X5900 in Europe/UK?). The price difference between the two for me is currently at $1250.00 This year's version DLA-X790 is out of my price range.Is it worth the extra cost to go with last year's X770 versus this year's X590 for my setup/usage?Not sure between these two and the cost difference.Any input would be appreciated!Mike
Pretty hard to beat the RS520 right now for the price. By the way, the X line is the consumer line, and the RS line is the " professional " line. Same projectors, different markets. http://pro.jvc.com/prof/attributes/category.jsp?productId=PRO6.1
Thanks for the input. Was getting excited about an RS520/X770 when now I am reading about CMD Vertical Banding issue and Fix Update. Specifically, the current Low Latency issue shows extreme ghosting when using Eshift and Low Latency the same time. So basically Low Latency is unusable/broken for all 4K content/games. Like honestly, WTH is wrong with these companies. At these price points, Sony should not have released the 285 unable to do 10-bit HDR properly and now JVC has issues. For the money I am about to drop, I need to be able to use this gaming on Xbox One X and PS4 Pro without any hassles. From your end, is there going to be a proper fix for the JVCs or shall I wait until next year. lol. Was hoping to take advantage of closeout pricing on the RS520/X770 now.
I'm not sure why you would need / want to use low latency with 4K Blu-rays / movies, so I don't know if that makes much difference to non gamers. But if you are a gamer that would be important. I'll see what JVC has to say - maybe there is another firmware fix in the works.