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Chat => Entertainment & Technology => Topic started by: addictweb on January 08, 2007, 13:55:53 PM

Title: HD resolutions
Post by: addictweb on January 08, 2007, 13:55:53 PM
Just a quickie. I can seem to find a conversion between pixel resolutions and 720 / 1080 i or p or whatever. Its all a bit confusing right now!

What resolution does an LCD TV need to be to be capable of displaying full 1080 (i or p?) resolutions?

Im looking at one with a resolution of 1366 x 768, what does that translate to?

Any help would be appriciated.


Title: Re:HD resolutions
Post by: Loki on January 08, 2007, 13:57:39 PM
720 / 1080 refers to the vertical resolution. . . as in 1280x720 and 1920x1080. . .  

Title: HD resolutions
Post by: Mardoni on January 08, 2007, 14:07:33 PM
First up, all LCD/Plasma screens are Progressive (p) scan. Only CRT can do Interlaced (i). When you view an Interlaced picture on a LCD/Plasma the screen does clever shizzle to make the i into p.

http://www.cnet.com/4520-7874_1-5137915-2.html

The closest "true" HD resolution to 768 would be 720 and as its a digital panel itll be 720p. The screen will *usually* stretch the 720p signal to fit the 768p panel resolution. There are some screens that offer 1:1 pixel mapping, on these displays the additional pixels (beyond the incoming signal) are masked out (to black).

That said a lot of people find that it is better to put a 1080 signal into a 768 screen, allowing the screen to shrink the signal to fit (rather than stretch).
Title: Re:HD resolutions
Post by: addictweb on January 08, 2007, 14:21:30 PM
Ok, cheers guys.

Not as complicated as I thought.

Now, is there a massive difference oin 720 and 1080? Worth paying more for something that can show 1080?

Title: HD resolutions
Post by: Mardoni on January 08, 2007, 14:32:02 PM
That all depends on the size of the screen and how far youll be sitting from the screen.

http://www.carltonbale.com/blog/2006/11/1080p-does-matter/

Title: Re:HD resolutions
Post by: Clock'd 0Ne on January 08, 2007, 15:01:08 PM
Depends how future proof you want to be, personally Id suggest waiting a year before going for 1080p capable screens. The big HD boom is just starting. For now Id suggest its better to get a quality 720p screen, rather than a cheap and nasty 1080 capable.
Title: Re:HD resolutions
Post by: Serious on January 08, 2007, 18:25:02 PM
Quote from: sexytwOk, cheers guys.

Not as complicated as I thought.

Now, is there a massive difference oin 720 and 1080? Worth paying more for something that can show 1080?


A 1366 x 768 will show either well enough up to 37" at least, probably a bit more. At 40" and above its worth thinking of a 1080 screen.

The real advantage of 1366 x 768 is that its a wide SVGA standard and most of them have sockets for computer connection. Great for games.

There are still very few 1080 screens out there and some are still trying to flog standard WVGA as HD ready cause they will display the picture. Note they will not display the picture at the actual high resolution, its scaled down to fit the available pixels on screen.

As Clockd says, go for 720P or 1366 x 768 now, or wait till next year for 1080
Title: Re:HD resolutions
Post by: Eggtastico on January 08, 2007, 19:01:30 PM
Quote from: sexytwOk, cheers guys.

Not as complicated as I thought.

Now, is there a massive difference oin 720 and 1080? Worth paying more for something that can show 1080?


Yes. Theres a Huge difference. I have about a 500gb+ of HiDef Movies & the 1080i stuff are much better than the 720p Stuff.
Title: HD resolutions
Post by: Mardoni on January 08, 2007, 21:03:56 PM
its all relative to your viewing position.

The best thing you can do is measure the distance between where the screen will be and where you sit then go into a shop and stand that far from each screen; buy the one that looks best.

I was going to get a 32" to 37" LCD until I did the above. It was in store that I noticed how much clearer a 42" Plasma looked.
Title: HD resolutions
Post by: Goblin on January 08, 2007, 23:46:59 PM
Sharps XD1 range are 1080p and available from 37" (were currently flogging that at Ã,£1200) and the Samsung F series is also 1080p in 40" and 46", but it more expensive.

Later in the year Ill be picking up a 40" Loewe Individual Compose which is 1080p, but sadly costs Ã,£3000 :(
Title: Re:HD resolutions
Post by: Mark on January 09, 2007, 00:54:04 AM
you sometimes see nasty deinterlacing artefacts on fast moving 1080i.

Heres hoping when I get a 1080p projector there will be more source material out there - Im happy with the PT-AX100 so far.
Title: HD resolutions
Post by: Mark on January 09, 2007, 00:56:21 AM
Quote from: GoblinSharps XD1 range are 1080p and available from 37" (were currently flogging that at Ã,£1200) and the Samsung F series is also 1080p in 40" and 46", but it more expensive.

Later in the year Ill be picking up a 40" Loewe Individual Compose which is 1080p, but sadly costs Ã,£3000 :(

The sony VW50 1080p projector is way cheaper than that - I wouldnt even entertain the idea of a small screen at that price point
Title: HD resolutions
Post by: Kunal on January 09, 2007, 11:58:10 AM
Quote from: Mark
Quote from: GoblinSharps XD1 range are 1080p and available from 37" (were currently flogging that at Ã,£1200) and the Samsung F series is also 1080p in 40" and 46", but it more expensive.

Later in the year Ill be picking up a 40" Loewe Individual Compose which is 1080p, but sadly costs Ã,£3000 :(

The sony VW50 1080p projector is way cheaper than that - I wouldnt even entertain the idea of a small screen at that price point


Every now and then I consider going for a projector, but get turned off by the whole sunlight issue. I like to use the TV during the day sometimes without closing the curtains ;)


The larger (46/52) Sharp XD1Es have banding issues from what Ive read. Im holding out for the HD1E whichll support 1080p over all inputs, have an extra backlight for more vivid colours, a HD-DVB tuner and what Im guessing will be an optional integrated 160Gb HDD. The Sony X2000 series is pretty good but quite expensive. The X2500 whichll also support 1080p over all inputs + HDMI 1.3 will be out soon as well.

Oh on another note - 37" XD1E for Ã,£1200?? You can get a 42" (Sharp LC-42XD1E) for that much!
Title: HD resolutions
Post by: Eggtastico on January 09, 2007, 15:57:13 PM
Quote from: MarkThe sony VW50 1080p projector is way cheaper than that - I wouldnt even entertain the idea of a small screen at that price point

Agree with you there.

Best thing I ever done was buy my Projector (Hitachi PJTX-200) instead of some 3rd party HiDef 42" Plasma which would have costed the same amount of money at the time.
Title: Re:HD resolutions
Post by: Mark on January 09, 2007, 17:15:39 PM
Kunal: Projectors such as mine are bright enough to be used in normal light. I can quite happily watch tv with the curtains opened and its still plenty bright. Thats why I got the PT-AX100 over anything else at the price point - its far brighter

http://www.projectorcentral.com/panasonic_ax100.htm
Title: Re:HD resolutions
Post by: Pete on January 09, 2007, 18:38:43 PM
http://plastik.hu/media/irobot-4fele.jpg - 4 frames, bottom 2 are 720p and 1080p respectively. tbh they look almost the same on my ickle monitor. Theyre Giffy shots so problably not the best for showing the difference.



http://www.cornbread.org/FOTRCompare/index.html - dvd vs 1080 hd.

This (http://www.palmer934.plus.com/hssd.jpg) is awsome, even on a 17" screen you can see the difference miles away.

Title: Re:HD resolutions
Post by: Kunal on January 09, 2007, 19:16:31 PM
The difference between 720 and 1080 will make more of a difference 42+.
Title: HD resolutions
Post by: Mardoni on January 09, 2007, 19:23:18 PM
but only if youre not sat miles from the screen :o

its all swings and roundabouts !