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matt_r2009

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#1 matt_r2009
Member since 2007 • 316 Posts
sorry if this is nooby. but whats the difference?
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jlabadie88

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#2 jlabadie88
Member since 2003 • 1985 Posts
i stands for 'interlaced' and p stands for 'progressive'. 1080p will make a sharper image on larger TVs than 1080i. As for 720p / 1080i, some people will tell you one looks better than the other, for both resolutions.
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matt_r2009

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#3 matt_r2009
Member since 2007 • 316 Posts
So is 1080i better on a smaller t.v. than 1080p?
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BroweChisox

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#4 BroweChisox
Member since 2003 • 1104 Posts

So is 1080i better on a smaller t.v. than 1080p?matt_r2009

No, 1080p will always be the superior resolution.  If you sit at THX Rerefernce distances, you can easily notice the difference.  It does not matter how large the tv is.  It seems like you are trying to convince yourself of something that is not true. 

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matt_r2009

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#5 matt_r2009
Member since 2007 • 316 Posts

[QUOTE="matt_r2009"]So is 1080i better on a smaller t.v. than 1080p?BroweChisox

No, 1080p will always be the superior resolution. If you sit at THX Rerefernce distances, you can easily notice the difference. It does not matter how large the tv is. It seems like you are trying to convince yourself of something that is not true.

How does it seem so? Nah I was just wondering because I've been looking at T.V.'s And last night I was just thinking whats the difference. Just curious is all. 

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BroweChisox

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#6 BroweChisox
Member since 2003 • 1104 Posts
[QUOTE="BroweChisox"]

[QUOTE="matt_r2009"]So is 1080i better on a smaller t.v. than 1080p?matt_r2009

No, 1080p will always be the superior resolution. If you sit at THX Rerefernce distances, you can easily notice the difference. It does not matter how large the tv is. It seems like you are trying to convince yourself of something that is not true.

How does it seem so? Nah I was just wondering because I've been looking at T.V.'s And last night I was just thinking whats the difference. Just curious is all.

Well alright, what tvs have you been looking at.  I can make some recommendations if I knew a budget or size requirement. 

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ddldave

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#7 ddldave
Member since 2006 • 886 Posts
i don't see much of a difference, 1080p may be a bit better but not so much...
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Halukard

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#8 Halukard
Member since 2005 • 113 Posts
1080i = 1080 lines in interlaced scan. 1080p = 1080 lines in progressive scan. Interlaced scan means that every 1/60 of a second, half of the on-screen lines are refreshed. The first time, the odd lines (lines 1, 3, 5, 7, and so on) are refreshed. 1/60 of second later the even lines (2, 4, 6, 8, and so on) are refreshed too. So basically every image is completely refreshed every 1/30 of a second, but not all the lines at the same time. Progressive scan mean that all the lines are refreshed at the same time (all 1080 of them). So you get a real full refresh 60 times per second. So yes progressive scan is a lot better. At the same time it is a lot harder to achieve. This is why you often are limited to 720p while being able to display 1080i. At this point it's your choice, many argue to which one looks the best. I personnaly prefer 720p to 1080i if 1080p is not available. Interlaced scan displays sometimes bad artifacts in very fast images sequences. This is due to the fact that not all the lines are refreshed at the same time. Progressive scan is always perfect.
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BroweChisox

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#9 BroweChisox
Member since 2003 • 1104 Posts

i don't see much of a difference, 1080p may be a bit better but not so much...ddldave

It is actually twice as good, since it displays twice as many pixels at any given time. 

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ddldave

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#10 ddldave
Member since 2006 • 886 Posts
can somebody take screenshot of 720p and 1080i comparison for me please, kthxbai. because i want to see for myself to see which one i like better.
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BroweChisox

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#11 BroweChisox
Member since 2003 • 1104 Posts

can somebody take screenshot of 720p and 1080i comparison for me please, kthxbai. because i want to see for myself to see which one i like better.ddldave

A screenshot wont be able to show the difference. You have the resolution of the tv being passed through the resolution of a camera, passed through the resolution of your monitor. What you are asking is not realisitic. 720p might even look worse since you are only capturing half of its frames with a picture... unless the shutter speed is slow and then you might get a fuzzy image.  Why don't you just go to a store and see for yourself??

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Halukard

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#12 Halukard
Member since 2005 • 113 Posts
can somebody take screenshot of 720p and 1080i comparison for me please, kthxbai. because i want to see for myself to see which one i like better.ddldave
This wouldn't make much sense. Progressive scan almost only looks better while the display is in motion. A screenshot will give you the false impression that the 1080i image is of better quality (since it's in higher resolution).
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danneswegman

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#13 danneswegman
Member since 2005 • 12937 Posts
1080P has the p from progressive scan. google that
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UTXII

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#14 UTXII
Member since 2007 • 3448 Posts
CBS and other News stations use the 1080i format for HD broadcasting. While ESPN uses 720p. I believe a MLB Game would look terrible with interlaced HD and it's a fast paced picture. 720p puts out a smoother picture, still it's a good HD format and most of the PS3 games right now are in 720p. 1080i will offer a bigger, more detaild picture because it has more pixels than 720p.

720p = 1280 x 720 progressive1080i = 1920 x 1080 interlaced

You can tell 1080p from 1080i, it looks much, much better in comparison. It's like smooth 720p picture but with much more pixels which provides more detail in the picture. Though broadcasting isn't in 1080p, yet of course. Maybe in the next few years, I have no clue.

Here: read this article:http://reviews.cnet.com/4520-6449_7-6361600-1.html

--my thoughts.
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TimothyB

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#15 TimothyB
Member since 2003 • 6564 Posts

Come on guys, where's your common sense?

Unless you have a CRT type HDTV that does 1080i or a 1080p tv you shouldn't even be thinking about 1080i being better than 720p or what the difference in 1080p because otherwise you can't  even fully show 1080i.

And there's no point in a 720p and 1080i comparison because no one has a tv that can do both except for a rare case of an older CRT. You simply can't do both on modern sets, but of course your tv lists 720p/1080i, that's only support, not what it displays in on in the end.

The fact is, 1080i on a 1080p literrally becomes 1080p (depending on the tvs hardware), but limited to 30fps. As 1080i is liimted to 60hz, and since all it is is 30 full 1920*1080 frames split into two fields shown twice as fast at 60hz, it's pretty much the exact amount of detail as 1080p at 30fps. But of course a full 1080p signal can do full 60fps.

Now again, the only way to fully show 1080i is either an older CRT type tv, the only darn things that run interlaced, or a 1080p tv. Every other type of tv, LCD, micro displays (those are rear projections other than crt rp), plasmas, and so on are all progressive, and if not 1080p, they are roughly 720p-768p, but they all support 1080i even though they have to convert all signals to it's 720p-768p resolution. Thus it would be pretty silly to try and do a comparison of 1080i and 720p on tv that converts them both to 768p.

I mean an EDTV that's only 480p resolution will usually support 720p/1080i, but I don't go around calling it a 720p/1080i tv and plan to see comparisons between the two.