Slashdot Mirror


Large Format TV Options?

pipingguy asks: "I'm planning to purchase a large screen TV and I'm leaning toward DLP at this time. After doing research on-line, I'm more confused than before. One thing I don't like about DLP is the relatively limited vertical angle for best picture viewing. LCDs don't seem to be as bad in this regard, but my understanding is that LCD is more expensive per inch. What is the current state-of-the-art for DLP? I'd rather buy a smaller TV with a better picture than one with a larger picture that is less appealing to the eye. And what about the thousands of tiny mirrors in DLP units? If these are mechanically moving parts, isn't that a likely source of failure (so says a Sony rep who wanted to sell me a LCD projection TV). Thanks for any advice/experience you can provide."

3 of 118 comments (clear)

  1. Re:LCoS by Osty · · Score: 4, Insightful

    I bought a Samsung DLP unit, but had to return it due to strobing rainbow effect. It was a really great image, though that was in part because Samsung was doing a very high level of algorithmic sharpening, which can cause halos around some images. But I really couldn't move my eyes across it without seeing the trailing rainbows.

    Different people are more or less susceptible to the rainbow effect. Personally, the only time I ever notice it is if I try to play Doom 3 on my Samsung DLP. The combination of a very dark image and fast horizontal movement makes everything crawl with rainbows. Interestingly enough, I haven't noticed it on any other first-person shooter games (Halo 2, Perfect Dark Zero, BF2:MC, Metroid Prime) or any other games (racing, sports, RPGs, etc). I can force myself to see the rainbow effect if I put in a movie, go to a dark scene, and rapidly move my head back and forth. Since that's not my normal viewing style (spastic head movement is not normal), I'm happy with my DLP.

    I didn't see this effect in the store at all, but at home the awareness of it really did build up.

    Store displays are set up in such a way as to minimize the rainbow effect (has to do with store lighting, demo material, etc). If you can see it on a set in the store, you're going to constantly see it at home and should stay away from that model. If you're concerned about rainbow effect, find a friend or colleaque with a DLP and see if they'll let you demo it in your home. That's the best way to know if you'll see it or not. Of course, if you're going to demo stuff in-store, you should bring in your own viewing material. When I go TV shopping, which admittedly doesn't happen all that often, I like to carry a couple DVDs (something with action, like Saving Private Ryan, and Avia at the very least). If a store won't let you demo a set with your own material, go somewhere else. Also, if a store won't negotiate on price, go somewhere else. By bringing in internet-based pricing on the 50" Samsung DLP I was looking at (in-store price $2100, online price $1800), I was able to negotiate a free stand ($300 value) while buying the TV at the in-store price (thus essentially paying $1800 for the TV, without having to pay for shipping).

    If you are interested in DLP, you might look at the new units that use high speed LED arrays instead of a high intensity white light bulb to handle the color.. these new ones still flash the colors in sequence, but the sequencing is much faster, and it really and truly is supposed to be below the perceptual threshold for everybody.

    Newer equipment is always better than older equipment, even if you still go with a traditional color wheel and bulb. for example, from the HL-P series to the HL-R, Samsung added more color sections to the wheel and made it spin faster, thus significantly reducing the possibility of rainbow effect for most people. The morale of the story is to know what model you want to buy (usually the newest, not last year's model), and make sure that's the one you're actually buying (big box stores like Best Buy are notorious for selling sets from two model years ago at current model prices).

    I wound up getting a Sony SXRD LCoS set swapped out for the Samsung DLP.. the SXRD was more expensive, but the resolution was higher (true 1920x1280p)

    I assume you mean 1920x1080p, not 1280p. But anyway, I'm not sure now is the right time to go 1080p. The price of 1080p sets is still significantly higher than a 720p set, and you're going to have a hard time finding 1080p sources (assuming you buy a set that can actually accept 1080p signals ...). If you're buying the TV to be a dedicated PC monitor, that'll work all right. Otherwise, any signal you're going to use will have to be upconverted by the TV, with

  2. I went with LCD by metamatic · · Score: 4, Insightful

    Then again, my TV probably doesn't count as "large". If you want a 50" behemoth, LCD is still prohibitively expensive.

    I initially liked the idea of DLP, but it has some problems:

    - On many sets, latency is an issue. This was a killer for me, as I had to be able to play video games on the set.

    - The bulbs need replacing, and they're a few hundred bucks each, so the ongoing cost is higher than LCD.

    - The sets make noise. I'm really picky about noise, I don't want anything with a fan in the living room.

    - The micromirrors don't generally fail, but the high speed rotating bits do.

    - The rainbow striping can be a bit distracting.

    - Visibility in daylight is problematic.

    The downsides of LCDs:

    - Contrast ratio not as good as DLP, but getting close.

    - Price is high if you want to go over 40".

    I don't see response time as an issue on the latest generation of LCDs. Certainly I've had no problem playing ultra-fast racing games. Picture is vibrant, strong saturated colors, and the brightness means there's no problem with daytime viewing. I haven't noticed viewing angle being an issue either, certainly no more so than it is with DLP.

    The downsides of plasma:

    - Short lifetime.

    - Gridlike mask over the picture.

    - Can't use it for video games.

    - Not a good idea to use it for extensive viewing of letterboxed material.

    - Heat, energy consumption.

    Downsides of CRT:

    - Weighs a ton.

    - Energy consumption, heat.

    - Takes up lots of space.

    - Full of nasty chemicals, you'll pay someone to take it away at the end of its lifetime.

    If you need a big screen and can't afford LCD at that size, projection LCD might be an option.

    Interestingly, each technology seems to have one company that has a clear lead. Sharp are the technology leaders for LCD. Samsung are the leaders for DLP. Panasonic are the best for plasma. Sony are the best for CRT. I haven't seen enough LCoS sets to conclude who's the leader there...

    --
    GCHQ Quantum Insert installed. If only our tongues were made of glass, how much more careful we would be when we speak
  3. Re:Don't worry about the mirrors by Malor · · Score: 4, Interesting

    Judging purely from anecdotal evidence (ie, just my eyes).... if you are sensitive to screen refresh rates on a CRT, avoid DLPs like the plague.

    I've always been sensitive to monitor refresh rates.... I see flicker all the time. A regular 60hz refresh bothers me a lot. Gives me a headache. 75hz is the absolute minimum acceptable refresh on a CRT, and 85hz is fine, even under fluorescents. At home, I liked to shoot for 120Hz, because that matched well with nearly everything... it gave me the smoothest possible motion. I imagine that might not work under fluorescents, but I never had a work CRT that could go that fast. (I'm all LCD these days.) (Strangely, I have never been sensitive to the 30hz video refresh rate, and I have no idea why.)

    DLP makes me want to claw out my eyes and run shrieking from the room. I can point out exactly which sets are DLP from a hundred feet away. If you are at all sensitive to CRT refresh, you MUST go see DLPs in person, and you absolutely must make sure you have an ironclad return policy. The saturation and color on DLPs is a little better than LCDs, and they tend to be cheaper, but a display that gives you motion sickness is no good, no matter how cheap it is. :-)

    If, for some reason, you can't demo a set, then LCD is the safe choice... it will always work, and all your guests will be able to use it comfortably. Plasma is also a good choice, as long as you realize that it does wear out eventually. And, of course, there's always CRT-based units. They don't get as large as the other technologies, but they have amazing image quality and are very cheap, because they're the redheaded stepchild.... people think CRT is automatically inferior, just because it's old tech.

    The major downside, at least to the Sony CRTs, is that they are incredibly heavy. You'll need help installing even a small screen. But the colors are rich and vibrant, the blacks are dead black, and the resolution is far better than the CRTs of old.