Originally Posted by rgtaa
Excellent review of the 70G and the 300T.
I think many of us thought if we get a LED PJ with stated 20,000-,30,000 hours on unit, that it would stay bright for a long time, just like our hdtv's do. But if at 1,000 hours you seem to suggest your 300T is not as bright as ones that don't have that much time on them. I'm thinking at 3,000 hours the 300T might be noticably dimmer than brand new unit.
Which in a way means, maybe many of us should stay with DLP and when the bulb get's 4,000 hours on them, get a New bulb to get NEW Brightness again. What can you do with LED if it has 5,000 hours on it and it's dim, you can't buy new bulb, right?
What is your thinking on this. You are pioneer in this LED area , and dedicated yourself to going the LED route with buying a few of them same model. Could you share your thoughts now that you have time with them. Did you ever own a DLP or LCD PJ?
I have a couple Ultra Sharp Dell monitors and they loose brightness. All the monitors I have loose brightness so I suspect that HDTV’s do too! The same thing happened to all my CRT monitors including my standard def TV.
At 1000 hours, I do wonder how bright it will be at 3000 hours. But the only major change I’ve noticed is the blurry start up and that could be due to my local climate. At 70 inches, it still rocks and only when I do a critical comparison do I feel like I need something new.
The problem is appreciating it at 70 inches because it is oh so easy to want it to go to a 100 or beyond. When that is done then the lack of higher brightness makes the picture come up short. But I have no trouble using it during the day. I don’t have much light control. My bedroom is 28x20 with a 12 foot cutout that would be perfect for an environment wall but nothing exists that would allow me to do that. Nothing that is quiet and easily hidden in the room setting.
I have not compared the 1000+ unit with one of lesser hours. I have my Epson hc720, two HW300Ts and the PA70G all collocated so I do intend to see how much of a difference there is.
I love the DLP picture. But I can not stand the RBE. It drives me up a wall. My units show it and one great fear is that I will reach a point where it dominates my viewing. When I setup my dual projectors on my high gain screen I was Okay for 3D.
Later in the afternoon I started watching the mini series Taken and I thought I was going to throw up. There was the constant RBE flashing. I tried to lower the output so that I could control the contrast but on a really high gain screen I COULD NOT make the picture dark enough to eliminate the RBE. I had to use the wall and even then I could barely stand watching the series.
So until DLP goes electronic (like LED or 3 chip) it is still a no go for me. The Epson’s give a good picture but they are simply not in the same league as a good DLP projector. There is a grittiness to the LCD image (I also see that in the LCOS). I simply can’t imagine buying a lamp based projector because I don’t expect lamps to be available in five years (at a reasonable cost). And when you consider what they cost now then reasonable will be astronomical.
As far as bulb life, that is another reason I went with LED. No manufacturer guarantees their lamps for hours of use. Instead they only guarantee the lamp will be okay for a certain period of time. The time is usually ninety days. These estimates of 2000, 3000, up to 5000 hours are marketing gimmicks.
What is worse than that is no reviewer gives a wear curve for the lamps. Since brightness is important it would be nice to know just how much brightness that new 300 dollar lamp has lost in a month. In other words, in an ideal situation you would get a true 2000 lumen replacement bulb that actually gives you 2000 lumens when it is installed.
But what is the output in a week, a month or six months. We know that lamps loose output but it would be nice to know when they reach that half way point. Our eyes are so forgiving that we could watch a 500 lumen output from that 2000 lumen projector and still be happy. Because if the choice is to spend another 300 dollars or watch a dimmer picture. Then the dimmer picture will win.
I would take a dim (relative) LED at 5000 hours over a lamp projector because we know that the output of the lamp with be virtually useless at 5000 hours. The cost of replacing lamps for my Epson projectors equaled the cost of the HW300T. The Epson has a better picture but the HW300T is a complete media solution that I can use almost any where. Once the picture starts on the HW300T, I have no problem feeling like I am in a commercial theatre and most of the time the picture seems better.