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Old 10-14-2007, 08:54 PM   #1
cjdavis83 cjdavis83 is offline
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Oct 2007
Default Watching 1080p content on 720p LCD.

Hi

Currently own a SONY BRAVIA 40inch 1366x768 LCD and a SONY PS3 which is outputting BLU RAY at 1080i as opposed to the native 1080p. Now, is this generating any other signal loss apart from the reduction in lines (downscaling)? What i dont understand is how can my LCD tv can display 1080 line pictures (1080i) when my tv is not 1920x1080? What is the 1080i mode on my TV actually showing and is this causing a slight motion blur which i can detect from this downscaling of the 1080p video content...?
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Old 10-14-2007, 08:58 PM   #2
me_inside me_inside is offline
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Oct 2007
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Quote:
Originally Posted by cjdavis83 View Post
Hi

Currently own a SONY BRAVIA 40inch 1366x768 LCD and a SONY PS3 which is outputting BLU RAY at 1080i as opposed to the native 1080p. Now, is this generating any other signal loss apart from the reduction in lines (downscaling)? What i dont understand is how can my LCD tv can display 1080 line pictures (1080i) when my tv is not 1920x1080? What is the 1080i mode on my TV actually showing and is this causing a slight motion blur which i can detect from this downscaling of the 1080p video content...?

On a 40-in the difference between 1080i and 1080p is indifferent to the human eye especially if you are sitting more than 5 feet from the TV.
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Old 10-14-2007, 08:58 PM   #3
Knight-Errant Knight-Errant is offline
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well I have a 720p LCD myself and as I understand it, one of LCDs weaknesses is fast motion which causes blur.
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Old 10-14-2007, 09:04 PM   #4
cjdavis83 cjdavis83 is offline
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Quote:
Originally Posted by me_inside View Post
On a 40-in the difference between 1080i and 1080p is indifferent to the human eye especially if you are sitting more than 5 feet from the TV.
But, i understand that LCDs are progressive scan anyway so how can they display 1080i signals? When watching 1080i content from my HD satellitite receiver (1080i50)i get relatively no blur and the picture looks film-like (almost as if its in 24hz frequency) as opposed to the 'judder' i get from BLU-RAY downscaled to '1080i' on my 768 line TV. Is it the downscaling genreally causing this or the difference in scanning from native (progressive) to interlaced???
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Old 10-14-2007, 09:08 PM   #5
WickyWoo WickyWoo is offline
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Quote:
Currently own a SONY BRAVIA 40inch 1366x768 LCD and a SONY PS3 which is outputting BLU RAY at 1080i as opposed to the native 1080p. Now, is this generating any other signal loss apart from the reduction in lines (downscaling)? What i dont understand is how can my LCD tv can display 1080 line pictures (1080i) when my tv is not 1920x1080? What is the 1080i mode on my TV actually showing and is this causing a slight motion blur which i can detect from this downscaling of the 1080p video content...?
You're getting 720p. Your TV takes the 1080i and converts it
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Old 10-14-2007, 11:49 PM   #6
Maxell Maxell is offline
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Aug 2007
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Quote:
Originally Posted by me_inside View Post
On a 40-in the difference between 1080i and 1080p is indifferent to the human eye especially if you are sitting more than 5 feet from the TV.
I hate when people stuff like that! To me that's like hearing blu-ray is the same as hddvd!
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Old 10-15-2007, 12:02 AM   #7
mastertang mastertang is offline
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720p is tecnically 1280 by 720, so it stands to reason that a 1080 signal is better than a 720 on a '720p' tv (since yours has a slightly higher resolution). I agree with the some other posters that it does not really matter if you are more than five feet away. There was some study done (no I don't remember where I read it) that at at distance x you could only see y amount of lines with the human eye. What the human eye does see better than resolution is contrast. That's what HDTV really delivers. 1080 has more pixels that contrast one another. Twenty feet from any HDTV, only contrast will make a difference in how good the picture looks. Most TV's have a 1000:1 contrast ratio, ones in development have been said to have a 30,000:1 ratio (some new LCD technology I think). I hate to say it, but though 1080p is good, you could say 720 is good enough. Just my opinion.
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Old 10-15-2007, 12:07 AM   #8
Sonny Sonny is offline
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Lmao!
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Old 10-15-2007, 12:38 AM   #9
bootman bootman is offline
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Quote:
Originally Posted by Maxell View Post
I hate when people stuff like that! To me that's like hearing blu-ray is the same as hddvd!
You can hate all you want, but its true.

http://www.myhometheater.homestead.c...alculator.html

http://www.hdtvsolutions.com/HDTV_Viewing_Distance.htm

http://www.soundandvisionmag.com/tip...esolution.html


...and there are instances where a blu and hddvd movie are exactly the same.
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