Originally Posted by zombie10k
my drink almost came through my nose when I read this.. subtle as a sledgehammer...
At 300 hours and 40%+ dimming, ghosting is much more noticeable now than it was in the beginning of this lamps life. It makes sense that heat / wattage could have something to do with it. Since the JVC panels take a good 20+ minutes to warm up even on a brand new lamp, it's plausable that when the lamp ages, wattage drops, heat drops, etc the panels won't reach the operating temperature when it was new.
I have 3-4 titles where ghosting is as clear as day. I will watch a few clips, let it cool down and swap lamps to see the difference with no other changes. I haven't used my replacement lamp yet.
Did the Sony take this long to 'warm up' or was the ghosting the same from start to 1/2 hour later? Curious if this affects the HC9000 since it uses the Sony panels.
It's a shame we won't be able to source the lamps since it looks like a proprietary, no-name company hired to make these wonderfully reliable UHP lamps. At least @ $200 a pop it wouldn't be that bad to replace every 500 hours. Or a spare just for watching 3D.
Maybe I'll double post this, since it's about the RS40, but Jason's comments prompted me to post here first.
I'm going on 800 hours on the lamp in my second RS40 (lamp blew at about 270 hours on the first one). I'm seeing a little more ghosting now than when the lamp was new. At that point, I saw virtually none. I think it's reasonable to assume that the extra heat generated by a new lamp is responsible for a part of that difference. Even with the slightly increased ghosting now, my RS40 is not a bad performer in that area, although I definitely want to see improvements next year.
If the Mitubishi uses Sony panels at the same refresh rate as this year, and they perform similarly, I'd expect to see worse ghosting for 3D Blu-ray. I haven't followed that thread at all, though, so I don't know what the reports have been. I remember some people in the Sony thread saying that Grand Canyon Adventure was almost unwatchable because of ghosting. Even some JVC owners are reporting some ghosting with that title. My first RS40 was excellent, with little ghosting. The second one has been even better. I just watched GCA again, at close to 800 hours, and I did see a few more instances of minor ghosting this time. It was far from serious, though - 99% ghost free, and I was actively looking for it.
I still believe the JVC engineers made the best compromises for 3D performance with this year's models. At 800 hours, I've lost little of my enthusiasm for the RS40. I love it to pieces as a 2D projector, with its amazing native contrast. It still delights me every time I see a dark scene with bright highlights. The image is so rich and deep. In 3D, it's enthralling. I have a 110" HP, and the HP/RS40 duo is great.
Of course, since I started shooting my own 3D, I have a different impression of RS40 ghosting when it operates at 120hz. At that refresh rate, the RS40 does not hold up nearly as well. 3D Blu-ray operates at 96hz on the JVC - a wise decision, since it ghosts so little at that rate. Increase that speed to 120hz, though, and the ghosting increases dramatically. I see it in many situations with footage from my JVC TD1 3D camcorder. And that's the ironic part, because my Samsung 3D plasma (at 120hz) ghosts a lot less with the camcorder footage. That's not to say it's all bad for the RS40 showing TD1 footage. For much of the footage, it looks absolutely incredible, with contrast and black level that the Samsung can't touch. I just wish it didn't ghost so much with some material.
With that said, I'm still very, very happy with the RS40 as a 3D display. I think JVC made the right choices. I know the lamp issue is troubling, and the RS50/60 issues are serious, but overall I'm a very happy JVC owner (even after my first RS40 had awful convergence and the bulb popped at 270 hours - forcing replacement). I'll definitely be looking at JVC again next year - though I doubt seriously I'll be on the pre-order list. But that's not because I'm afraid of the product - just that I think I'll still be very happy with the RS40 when the new models roll out. I'll wait to find out how good the second generation improvements are before I think about upgrading again. That's how much I like the first generation.