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  #11  
Old 08-19-2005, 02:16 PM
astroglide astroglide is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

p = progessive
i = interlaced

progressive scan means that every line on the screen is refreshed at once. interlaced means that every other line refreshes, then the missed ones are hit in a second pass. 720 is lower resolution than 1080, but because of the progressive nature it will produce a more "stable" image, which is why it's preferred for high-action scenes (e.g. sports).

this really isn't something you should sweat, but i would suggest an lcd over a dlp for reasons i have already described in previous posts (dlp rainbows). a search for hdtp, dlp, etc should bring up some of the threads. sony's new 3lcd sets look like a good deal.
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  #12  
Old 08-19-2005, 02:17 PM
astroglide astroglide is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

hd dvds are very likely to support 1080p
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  #13  
Old 08-19-2005, 02:17 PM
BusterStacks BusterStacks is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

LCD over DLP is an error.
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  #14  
Old 08-19-2005, 02:20 PM
astroglide astroglide is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

i value the ability guarantee my family/friends/guests to not see glaring visual distortions over a marginal improvement in black levels. my live-in gf and one of my good friends, for example, both see rainbows. i would love to hear your rationalization on how this stance is an error.
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  #15  
Old 08-19-2005, 02:20 PM
guller guller is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

You won't be able to tell the difference. Right now you are viewing 480i, any jump up from the norm is going to look a crap load better.

Your tv will convert everything to it's native resolution of 720p, this includes 1080i and 480i.
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  #16  
Old 08-19-2005, 02:24 PM
cdxx cdxx is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

[ QUOTE ]
[ QUOTE ]
otoh, you could splurge on 1080p, at more than twice the cost.

[/ QUOTE ]yeah... and watch what?

[/ QUOTE ]

1080p broadcasts of course... when they will available in 2008. [img]/images/graemlins/wink.gif[/img] i am quite certain that 1080p tvs will display 1080i and 720p signals just fine though.

whatever you do, do not get an analog big-screen tv. in 2008, all analog broadcasts will be turned off and your tv will go dark, and possibly earlier than that in some areas. digital is the only way to go.
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  #17  
Old 08-19-2005, 02:28 PM
BusterStacks BusterStacks is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

uneven color, pixelation, and a MUCH higher rate of failure both in and out of warranty period should be enough. You realize that when an LCD TV stops working just because they don't last long, it's not an actual defect and thus is not covered by either the factory or storebought extended warranties?

As far as the rainbow effect, I'd assume he's not buying a first generation DLP and if that's the case, he won't notice it.

Also, DLP is cheaper. [img]/images/graemlins/grin.gif[/img]
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  #18  
Old 08-19-2005, 03:05 PM
MrMon MrMon is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

I don't know the answer to this but maybe someone does. If the HDTV in question won't show 1080i in native format, what is it going to convert it to? I don't think the answer is 720p, the info isn't there. I think it's going to be 720i. In which case, don't get the TV.

Proud owner of a Sony WEGA 36" HDTV. CRTs still rule!
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  #19  
Old 08-19-2005, 03:15 PM
cdxx cdxx is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

it's going to convert to whatever the tv's native resolution is. older tv's couldn't go from interlaced to progressive, but nowadays all 720p default to that. the reason being that the picture looks that much better, so the customer thinks they have a kickass tv, rather trying to blame it on the signal.
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  #20  
Old 08-19-2005, 03:15 PM
astroglide astroglide is offline
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Default Re: Is my friend right? 720p vs. 1080i problem

uneven color

are you talking about flat panels? i've never heard of color uniformity issues on any kind of rear-projection lcd/dlp/lcos sets. color pushing, incase that's what you meant, occurs across all types of sets and it can be greatly mitigated by calibration (either by yourself with avia/dvd essentials or by a local isf-certified guy).

pixelation

are you talking about front projectors? the screen door effect (which is still much less disruptive that rainbows) is effectively non-existent on decent rear projection lcd sets. it hasn't been a topic of conversation for some time, it used to be a popular one with lower-end front projectors.

a MUCH higher rate of failure

feel free to reference your objective source of data for this one

As far as the rainbow effect, I'd assume he's not buying a first generation DLP and if that's the case, he won't notice it.

this was a new samsung set. my gf easily sees them on the newest models with 7-segment color wheels.

Also, DLP is cheaper.

this argument is basically gone too. have you priced sets lately? you might also notice that flat-panel lcds have caught up with plasmas at 37".

my girlfriend sees rainbows, a good friend sees rainbows. one of them lives with me, one of them visits on a regular basis. he purchased a dlp and returned it because of rainbows. these are just 2 people in my life. if you think that others might not see rainbows, or that i would be advised to select DLP you are an idiot.

with comperable pricing and performance, it is much safer to purchase a set that will guarantee no rainbows. if lcds were materially pricier or underperforming, it would be a tough decision. a few years ago dlps were a lot cheaper, had much better black levels, and noticably better response on high-action scenes. a strong argument could be made for them. lcd is now competitive on all of those fronts, and despite better color wheels rainbows are still VERY noticable to many people.

assertions about failure rates should be ignored until proven. it certainly hasn't been my experience. i have many friends and coworkers with hdtvs, and the only one i know of that needed repair was a first-generation samsung dlp. on the whole the rear projection dlp/lcd market seems to be very reliable from my anecdotal metric.

it sounds like your goal is to feel great about your own purchasing decision/recommendation and sound like you know a lot about televisions. my goal is to recommend a great set. modern dlps and lcds both look great. one of them has a non-zero likelihood of showstoppingly bad effects, one doesn't. it's results-oriented to say, "hey i don't see rainbows so dlp all the way baby!" i could say the same thing. i don't see rainbows. i would be totally satisfied with a dlp set. i'm just concerned about other people who watch it.

before purchasing one can eaisly view the sets side-by-side in a showroom to determine which they feel looks better. hopefully at a decent showroom with uniform signalling and all-calibrated or no-calibrated sets, like a smaller enthusiast type store. if they feel one looks way better at the same price, well, hey that's something to consider. whether or not their guests or the people with whom they live do or will develop the ability to see rainbows is absolutely unpredictable.
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