Home audio & video: Poll: Can you see the difference in picture quality...
- 12/12/07 4:30 PM
Without a doubt there is a noticeable difference...
by ggipper - 12/12/07 8:09 PM In reply to: Poll: Can you see the difference in picture quality... by Lee Koo (ADMIN)
I have the 1080p full hd Toshiba dlp and it is so incredibly clear that everyone that has witnessed this monster, stands in wow, fascination and disbelief. But the eyes tell the true story.
My cable provider shows 1080, 720 and 480, all as HD, but only in 1080 do you get absolute clarity. I have had mine for eight months and all I care to watch are shows in 1080hd. The sad thing is that only a few stations allow for 1080 or 720. Evidently 480 is cheaper to produce, so 99% of all HD is presented in 420i. This is what I have experienced in the world of HD,in Atlanta for the last eight months
They are lying to you
by froasier - 12/12/07 9:38 PM In reply to: Without a doubt there is a noticeable difference... by ggipper480 is not HD by any means. 480i is SD (there is no 420i and that would definitely not be HD), 480p is ED, and 720p and above are HD. Also the reason few stations are in HD is because it takes up more bandwidth, not because of production costs.
480 is not HD, just clarifying...
by chopsaw84 - 12/13/07 5:17 AM In reply to: Without a doubt there is a noticeable difference... by ggipperUnless it's 720x or 1080x it's generally not considered HD, anything lower than 720i, such as 480p is standard definition (SD).
tiny correction
by froasier - 1/12/08 9:33 PM In reply to: 480 is not HD, just clarifying... by chopsaw84480i is SD; 480p is enhanced-definition (ED)
Re: Yes a little.
by Sterlingm13 - 12/12/07 8:19 PM In reply to: Poll: Can you see the difference in picture quality... by Lee Koo (ADMIN)
I work in a testing lab where we look at LCD and plasma HDTVs for picture quality and performance.
This is a huge can of worms to open with several variables.
If we are to assume that the panel is capable of a true 1080P resolution and not an upsampled 720P image, and the panel is 42" or larger, then the average user should be able to see a slight difference between the two resolutions. However, the individual who has little to no experience with HDTV will not see a noticeable improvement between the two resolutions, and will see both as "really sharp picture".
If the panel is under 42" and that same 7 foot distance, the image is too small to easily detect with the untrained eye the differences between 720P and 1080P.
Bottom line, look at the specifications of the panel and what the performance capabilities are. Also look at the same content on the screen from the distance your couch or chairs will be in your viewing area. 720P may be "good enough" for the distance you are sitting at and save you some money for that HD-DVD or Blu-Ray player to go with it.
Yes, there is a difference but not what you think
by astrobuf - 12/13/07 8:52 AM In reply to: Re: Yes a little. by Sterlingm13I cannot tell a difference in spatial resolution between a good 720p and a good 1080p display showing 1080 content. However, I can tell a significant difference in the picture quality. Strangely, many 1080p devices (LCD and PDP) actually look worse when viewing movies and TV. The reason is the poorer contrast ratio inherent in the 1080p capable device. To achieve 1080p, the devices (LCD and PDP) end up giving up much pixel aperture ratio, that is, the space around the pixel (black border etc) becomes a much larger percentage of the display. The lost aperture ratio leads to a loss in contrast ratio, something already in short supply for LCD TV's. The loss in contrast ratio leads to a loss in color gamut. In general, I find the color, brightness and contrast of 1080p devices to be worse than 720p devices. Witness CNET's own assessment of the Pioneer Kuro 50" 720p display as producing the best image of any TV these days!
Now, there are other problems with 1080p devices beyond color and contrast. In the case of LCD's, the 1080p devices in general suffer more off axis color shift as well. The reduced viewing angle also leads to most viewers getting a poor quality image.
I do also see that 1080p LCD's suffer much more from motion artifacts. I'm not sure if this is due to some limits int he bandwidth of the image processors, or pixel latency related to the liquid xtal's response. Whatever it is, I find it most disturbing, especially when I've paid for a premium device.
Finally, both LCD and PDP devices displaying at 1080p are much more power hungry. The loss in aperture ratio leads to lower luminous efficiency in the case of PDP TV's. The loss of aperture ratio leads to a reduction in transmission efficiency in the case of LCD TV's and thus an increased use of optical gain films and CCFL's.
Astrobuf
Panasonic 1080p v Pioneer 720p Plasma.
by nomore801 - 2/3/08 6:56 AM In reply to: Yes, there is a difference but not what you think by astrobufCnet just changed their assessment, giving higher marks to the
Panasonic over the Kuro in the 40/42 inch range (I can fit either). Any thoughts?
720p,1080p,1080i ,plasma,LCD Mitsubishi,Pioneer,Panasonic
by nomore801 - 1/29/08 9:09 PM In reply to: Re: Yes a little. by Sterlingm13I left a post/question which I do not wish to repeat word for word but, if you follow this thread, you will seeit. ....
780 p v blu-ray
by willow.press - 3/14/08 8:04 AM In reply to: Re: Yes a little. by Sterlingm13I was very interested to read your reply. I have a Samsung 320p 32 inch wide-screen LCD with 1080p capability and a Denon DVD 1910 player which has 720p and 1080i capability. My wife and I sit about 8 ft. away from the screen and most films look good particularly the full screen ones. I am considering buying a Blu-ray player which will use the 1080 p parameter. I am wondering if this would be wise and whether we shall be able to discern any difference. We have never had TV.
What do you think. I spent a lifetime working on visual display systems but these were CRTs in an MoD research establishment.
Alan
Yes there is a difference and size does matter!
by dony - 12/12/07 8:39 PM In reply to: Poll: Can you see the difference in picture quality... by Lee Koo (ADMIN)
I have two HD sets, one that plays 720p and 1080i (and lower) and the other plays up to 1080p. Both are larger than 50 inches. I also have an upscaling DVD player and a PSIII (newest) that I use for blueray. I have tried all the combinations and this is my conclusion:
For broadcast tv, 720p or 1080i are both good and I cannot tell the difference. 1080p, however is far superior. I am receiving satellite HD signals from Bell in Canada. I do not know why but I can really see a big difference.
For ordinary dvds, 720p is better than 1080i for car races and anything that is moving objects across the screen fast. For scenery and people talking, 1080i is superior but not by much (you can see it though). 1080p is totally superior to both the others and the difference is seriously better.
Of course, there is the ultimate and that is the blueray. I bought Pirates last weekend and it is better at home than on the big screen...far, far, far better. One look and you will not need any convincing.
Don
720p vs 1080p
by spanky322a - 12/12/07 8:48 PM In reply to: Poll: Can you see the difference in picture quality... by Lee Koo (ADMIN)
I agree that 1080p is far superior to 720p. However, I (and probably most respondents who agree on this point) are comparing their 50" plus, 1080p, primary HDTV's with much smaller 720p models used as secondary HDTVs (26" in my case). It would be most valuable to perform a controlled, double-blinded control study using a large group of participants under the same laboratory conditions.
HDTV
by dlstephenson - 12/12/07 8:55 PM In reply to: Poll: Can you see the difference in picture quality... by Lee Koo (ADMIN)
With the SAME contrast ratio, SAME size Screen, SAME Vendor, SAME Settings, SAME Input, SAME MFG, and THE SAME MODEL, you can see a differance. But I think contrast ratio is way more visable than the resolution, and the type of HDTV is even a bigger factor, that 1080p is generally not a big factor. I want a 100 inch plasma.
720 vs 1080
by frash82 - 12/12/07 9:17 PM In reply to: Poll: Can you see the difference in picture quality... by Lee Koo (ADMIN)
Studies done by experts state that the human eye can not see the difference between 720 and 1080 on screen sizes 50" or less. So if you are planning on buying a 50" or smaller save your money and find a 720P because you won't see a difference.
It really bothers me that the manufacturers only bring out one feature at a time when they could have brought it out all at once 1st 720 now 1080, it's to keep the public spending their money. Joe public should start boycotting consumer electronics because whatever you buy will come out next week with better features.
that quote about the study is incomplete and misleading
by froasier - 12/12/07 9:44 PM In reply to: 720 vs 1080 by frash82Your ability to see the difference in resolution relies just as much on viewing distance as screen size. If you sit 4 feet from a 24" screen it is equivalent to sitting 8 feet from a 48" screen.
BOTTOM LINE
by froasier - 12/12/07 10:16 PM In reply to: Poll: Can you see the difference in picture quality... by Lee Koo (ADMIN)
Assuming all other specs on the TVs are the same, and assuming each has an appropriate video source (with native resolution matching the TV, or at least high quality scaling), it will depend on the following factors:
1. Screen size
2. Viewing distance
3. Your vision acuity (e.g. 20/20)
4. Type of image (rendered text or 3D graphics will a show more noticeable difference than will captured video or photographs)
5. Motion in the scene (this only applies when comparing 1080i)
In fact without even having an HDTV you can use your LCD monitor and math to figure out at what screen size and/or viewing distance you could tell the difference between 720p and 1080p with the same type of image.
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