General Plasma & LCD discussions

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Quantum Theory said:
You can't spin it like that. There is a huge difference between 1080p and 1080i. The latter is comparable to 720p in quality and bandwidth used and for fast moving images broadcasters actually prefer 720p.
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It doesn't matter how you spin it that is the fact. They are the same resolution exactly.

Besides, I'm sure the end of my sentence says that the P is a better quality version of the resolution;)
 
Juggy said:
It doesn't matter how you spin it that is the fact. They are the same resolution exactly.

Besides, I'm sure the end of my sentence says that the P is a better quality version of the resolution;)
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You also said MC was broadcasting 1080p ;) That was your original false statement...

Your second false statement is that 1080i and 1080p is the same resolution. 1080i is 2 x 540 line images interlaced (normally with slower frame rate, I think), which is normally converted to 720p for display on modern LCD's or plasmas. 1080p is 1 x 1080 line image.
 
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PostmanPot said:
Plasma is best for SD. Plasma is best at the entry level. SD over HDMI (HD PVR) is especially good.
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Went to Makro today to compare DSTV SD, HD & Blueray ...

- Samsung 42' Plasma - cheap, but I couldnt really see the SD benefit, maybe colours were a bit better but nothing dramatic. HD & Blueray werent good.
- Samsung 50' Plasma - still cheap but too big
- Sony 40' LED 100Hz - the best, but the difference is so slight compared to the hefty R9999 price
- Samsung 40' 50Hz - for me, almost as good as the Sony on SD, HD & Blueray for much cheaper

Bought the Samsung 40' on special for R6999 with HD PVR + Drifta thrown in.
 
Roman4604 said:
Went to Makro today to compare DSTV SD, HD & Blueray ...

- Samsung 42' Plasma - cheap, but I couldnt really see the SD benefit, maybe colours were a bit better but nothing dramatic. HD & Blueray werent good.
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Why weren't HD and Blu-ray good?
 
Roman4604 said:
Went to Makro today to compare DSTV SD, HD & Blueray ...

- Samsung 42' Plasma - cheap, but I couldnt really see the SD benefit, maybe colours were a bit better but nothing dramatic. HD & Blueray werent good.
- Samsung 50' Plasma - still cheap but too big
- Sony 40' LED 100Hz - the best, but the difference is so slight compared to the hefty R9999 price
- Samsung 40' 50Hz - for me, almost as good as the Sony on SD, HD & Blueray for much cheaper

Bought the Samsung 40' on special for R6999 with HD PVR + Drifta thrown in.
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Did you turn down the brightness on the TV's before you tested them?
 
Roman4604 said:
No, but they didnt seem overly bright?
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Plasmas aren't as bright as LCD.

My guess is you weren't happy because of the shop lighting. Gives an inaccurate representation of LCD vs plasma. Your TV room has much softer ambient lighting.

LCDs were also probably on torch mode.

I'm guessing you weren't viewing at correct viewing distance either.

Plasma is MUCH better for SD, it's a fact. Also there shouldn't be much difference at HD stuff, plasma will still have the edge at the lower end of the market in terms of better colours and blacks.

Anyway, glad you're happy.
 
PostmanPot said:
Anyway, glad you're happy.
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Yeah got it all hooked up and am pleasantly surprised by the SD quality from my SD PVR via RF through the HD PVR to the TV's RF ... thats coming from a 100Hz LG Flatron CRT. Will have to do with that till Mon when I get the HD PVR/Xtraview activated.

Now to get the Drifta working on the iPad.
 
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PostmanPot said:
SD over HDMI is much better, even on LCD. :p
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Yep, its just a temporary measure until HDMI connected HD PVR is activated. After that the SD PVR will be exclusively used for the 3 other TVs around the house connected via RF.

BTW, how does one stop the HD & SD PVR remotes from clashing with each other (the two are next to each other)?
 
Roman4604 said:
Yep, its just a temporary measure until HDMI connected HD PVR is activated. After that the SD PVR will be exclusively used for the 3 other TVs around the house connected via RF.

BTW, how does one stop the HD & SD PVR remotes from clashing with each other (the two are next to each other)?
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Not 100% sure but involves turning the dial.
 
No country in the world has a 1080P TV station. Not even in Hong Kong or Japan. HD TV transmissions are 720P. That's it.
 
Quantum Theory said:
You also said MC was broadcasting 1080p ;) That was your original false statement...

Your second false statement is that 1080i and 1080p is the same resolution. 1080i is 2 x 540 line images interlaced (normally with slower frame rate, I think), which is normally converted to 720p for display on modern LCD's or plasmas. 1080p is 1 x 1080 line image.
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Strange, the Great Wiki must lie then on the 2nd statement. I take responsibility for false information given to me on the first, my humblest apologies.

http://en.wikipedia.org/wiki/1080i
1080i is the shorthand name for a high-definition television (HDTV) video mode. The i means interlaced; 1080i differs from 1080p, in which the p stands for progressive scan. The term 1080i assumes a widescreen aspect ratio of 16:9, implying a frame size of 1920×1080 pixels.

The field rate of 1080i is typically 60 Hz for countries that use or used System M as analog broadcast television system (such as United States, Canada, Japan, and Brazil) or 50 Hz for regions that traditionally used television systems with 25 frames/s rate (such as in Europe, Australia, much of Asia, and Africa). Both variants can be carried by both major digital television transmission formats: ATSC and DVB.

The frame rate can be implied by the context, while the field rate is generally specified after the letter i, such as "1080i60". In this case 1080i60 refers to 60 fields per second or 30 frames per second. The European Broadcasting Union (EBU) prefers to use the resolution and frame rate (not field rate) separated by a slash, as in 1080i/30 and 1080i/25, likewise 480i/30 and 576i/25.[1] Resolutions of 1080i60 or 1080i50 often refers to 1080i/30 or 1080i/25 in EBU notation.

1080i is directly compatible with CRT-based HDTV sets and is displayed natively in interlaced form, but must be deinterlaced and often scaled for display on modern progressive-scan LCD and plasma TV sets. Depending on the television's video processor the resulting video quality may vary.

All UK HD channels on satellite, cable, and terrestrial platforms including BBC HD and ITV1 HD broadcast in this format. In the United States, 1080i is the preferred format for CBS, NBC, and The CW, though some affiliates (especially those that broadcast two digital subchannels in HD) do broadcast in 720p. Fox and ABC/ESPN broadcast in 720p.
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http://en.wikipedia.org/wiki/1080p
1080p is the shorthand identification for a set of high-definition television (HDTV) video modes that are characterized by 1080 horizontal lines of vertical resolution[1] and progressive scan, meaning unlike the 1080i display standard, the image is not interlaced.

The term usually assumes a widescreen aspect ratio of 16:9, implying a resolution of 1,920 pixels wide by 1,080 high. This resolution is similar to that of 2K digital cinema technology. The frame rate can be either implied by the context or specified after the letter 'p', such as 1080p30, meaning 30 progressive frames per second.

1080p, sometimes referred to in marketing materials as Full HD, typically refers to the capability to accept 1080p signal and display it with native resolution of at least 1080 lines, as well as the capability to upscale lower-resolution material to 1080p.

HD ready 1080p logo program by DIGITALEUROPE requires that certified TV sets support 1080p24, 1080p50, and 1080p60 formats, and feature a native resolution of at least 1920×1080 pixels, among other requirements.
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Now, I'm not the fighting type so if I'm understanding this incorrectly I would like for someone to explain to me why my brain isn't functioning correctly and what the proper explanation is.
 
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So despite initially looking at the LG Plasma, being the only 42" that could just fit into the provided space, I eventually decided to rather go for an 100hz LCD hooked up to a HD PVR. I wasn't happy about the tight fit of the 42" so rather looked for a 37" as opposed to a 32". There aren't too many 37"'s floating around but managed to find the LG 37LE5500 which has all the bells and whistles 4xHDMI, 2xUSB etc etc.

Cheapest price on Pricecheck was R 11.5k but for some reason Makro were selling them for R7k, so I reckon I got a "bargain" :).

Now to find a 5.1 system....
 
Sorry Juggy. I'm not the fighting type either, but stating that they are the same resolution is wrong... That wiki explanation is quite vague (as they tend to be).

1080i is a combination of 2 interlaced images. Only 540 x 1920 of each image is displayed, because every other line of each frame is missing. With good image processors, the following happens during de-interlacing:

The most advanced de-interlacing technique available is a true pixel-based motion-adaptive approach. With processing, motion is identified at the pixel level rather than the frame level. While it is mathematically impossible to avoid discarding pixels in motion during de-interlacing, processing is careful to discard only the pixels that would cause combing artifacts. Everything else is displayed with full resolution.

Pixel-based motion-adaptive de-interlacing avoids artifacts in moving objects and preserves full resolution of non-moving portions of the screen even if neighboring pixels are in motion.
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So moving bits are at 540 and non moving bits are at 1080

With bad image processors they discard half of the image, and scale up the 540 x 1920 image to 720p...
 
Quantum Theory said:
Sorry Juggy. I'm not the fighting type either, but stating that they are the same resolution is wrong... That wiki explanation is quite vague (as they tend to be).

1080i is a combination of 2 interlaced images. Only 540 x 1920 of each image is displayed, because every other line of each frame is missing. With good image processors, the following happens during de-interlacing:



So moving bits are at 540 and non moving bits are at 1080

With bad image processors they discard half of the image, and scale up the 540 x 1920 image to 720p...
Click to expand...

I'm still stryggling to understand it so I'll need to do more research myself. Thanks all the same for the explanation;)
 
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