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Originally Posted by gooomz /forum/post/12869588
but how come it seems that if you look at the specs the $5 DLP projectors in terms of lumens and contrast are a lot of times less then $2500 LCD Projectors?
what specs do the DLP $5k projectors excel in on paper
Lumens is primarilly because in the market we're in, more lumens aren't "necessary". They could make projectors with more light output rather easily if they wanted to but they don't because most HTs don't need it and further because it would probably decrease CR specs.
The reason contrast ratio is similar is because
in geneneral the two technologies reach those numbers in entirely different ways. DLPs reach their CR numbers "natively", some models have fixed iris's, but in general a DLP can hit in the area of 5000:1 without resorting to Dynamic Iris, of course these inevitably get marketed as "10,000:1" CRs.
LCDs on the other hand have largely begun incorporating Dynamic Iris into their designs, and because of that they are able to advertise (and reach) much higher CR numbers than the LCD technology on it's own is capable of.
Now, we're starting to see the use of Dynamic Iris on DLPs and the result is clear, CR numbers are increasing dramatically. BenQ has doubled it's CR specs on the W20000 (20,000:1 with Dynamic Black) vs it's predecessor the W10000 (10,000:1 without Dynamic Black)
It's not unlike the VW50 vs RS1, both have the same CR spec, but they have dramatically different CR performance because the RS1 hit's it's CR natively while the VW50 relies on Dynamic Iris.
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Originally Posted by ddingle /forum/post/12869716
It should be mentioned that all DLPs anywhere near the price point discussed use a "single" DLP chip. A segmented color wheel is used (in most cases) to sequentially reproduced all three colors required. You should research the history of the color wheel and the many distortions and fatigue that it can add to your viewing experience.
And no doubt single-chip DLP has it's own artifacts, but those affected physically by those artifacts are in the great minority, not that you'd know that though since they are one of the most vocal minorities out there.
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All the LCD technologies use 3 chips. All three colors are reproduced at the same time.
Which has it's own artifacts, namely convergence issues.
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Lot's to consider really.
If money was no object than a 3 chip DLP would be the way to go!
I agree, while generalities can be drawn, they aren't really that useful.
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Originally Posted by frank456 /forum/post/12869724
My sharp 20000 ( DLP ) has contrast and black levels which any LCD projector I have seen cannot quite match. I am not saying that it walk's all over the liquid crystal designs but there is is an extensive difference between my sharp 20000 and the panasonic 200 that I have in the same theater room.
The new top of the line epson and mitsubishi offerings bring the differences to a much smaller gap.
True, but the new DLPs probaby restore that gap too. Contrast ratio, convergence and color accuracy are simply not strengths of LCD technology.
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I currently also have an RS2 in my theater as a temporary companion to the other 2 models. The RS2 ( lcos ) produces blacks as good or even slightly better than my sharp 20000 but produces more light output while doing so.
And you know something, perhaps this illustrates the OP's question exactly. The Sharp 20k is no match for the RS2 on paper, the 20k can "only" do about 6000-7000:1 On/Off CR, while the RS2 can do 15,000-30,000:1, yet that's only "slightly better" than the 20k.
