Sound off 4k (2160p) or whatever you care to call it, do we need it – page 16 – avs forum home theater discussions and reviews yoga gas relief pose


My reference to the $100 security camera wasn’t about specs. My point was that a cheap security camera doesn’t include any PTZ (pan, tilt, zoom) functionality. The human body OTOH has far more capability. Although the human eye can’t zoom in the same fashion as a camera lens, it does have the capability to redirect attention. Not only can we mimic pans and tilts, but we can pedestal ourselves up and down…we can articulate (and locomote) our bodies to change our POV with few limits.

And electricity trading hedge funds the people who like to say you can’t do that…well, they’re not going to have their orders obeyed. I have yet to see a movie theater equipped with Brazil-esque devices to lock down the human body (even the eyeballs!) so that it can’t possibly move, or anyone who would want to watch a feature-length film while restrained by such a device.

On the other side of the coin, although video displays are still mostly fixed devices, there’s an increasing use of multiple displays, multiplexed displays (picture in picture really didn’t catch on, although it deserves a mention) and mixed environments where TV and computer displays can be brought up and used as needed. It doesn’t take much imagination to see that people will continue to think outside the box when it comes to display technology. I predict a rich and varied future in this realm.

Just yesterday I was stretched out on the couch watching a movie, and realized that my head was oriented perpendicular to the TV screen; I was laying on my side, but the TV still was in its normal panoramic orientation. Amazing to think that my brain automatically fixed the image, and I didn’t see the picture as if it was standing on end!

The 1953 NTSC standard had a very nice color range, but the phosphors in use were rather dim. From the late 1950s to late 1970s, televisions became much brighter but suffered a greatly reduced color gamut, thanks to the different phosphors being used. Reds gas mask drawing became reddish-orange, and greens became yellow-green. There were no standards that television manufacturers were willing to conform to.

I do agree with you about the now self-imposed limitations of Color TV 1.x that have been carried over to v2.0 (HD) and beyond. When ATSC came out, I was sorely disappointed to learn that not only was raster scanning retained, but even deprecated things like blanking intervals, IRE 7.5 black levels etc. were inexplicably still part of the D/HDTV system! I can understand why the original HDTV standards like BT.709 were heavily constrained by the low availability and high cost of the equipment that makes all those electricity quiz 4th grade bits so inexpensive today.

By the same token, now that digital HDTV has paved the way (note that a lot of original HDTV development was done using analog technology), isn’t it about time for improvements in colorimetry such as a color space that meets or exceeds the color gamut visible to the best human eyes. (I’m hardly an expert, but if the CIE x axis’ lower limit was extended down to 0, and the upper limits on the x amd y axes adjusted accordingly, that’s all that needs to be done to include what we currently consider to be the limits of human color perception. I’ll leave it to the real mathematicians to figure out the best way to toss out the unused parts of that triangle.) At least BT.2020 is a step in the right direction, compared to BT.709, CCIR 601 and the analog color spaces (ie. SMPTE-C) that came before.

Maybe by the time a 16K standard needs to be agreed upon, that the engineers who work on that standard might want to throw all of the antiquated thinking that’s based on things like the color of tungsten and phosphors, take the clean sheet approach and replace it all with less arcane and more universal functions that would be a more suitable platform for use electricity facts in the 21st century.

To me the original premise is faulty: Let’s face it, for the most part, most of the world won’t get any benefit out of it because the displays are just too small in the average household to truly see the high-resolution of a 4K monitor. Even at the time, displays were already getting to the 40-55 range and at that level, yes, you can truly see the benefit of 4K at normal viewing distances. My first 4k was a 55 Vizio early in 2015. Even without HDR, the difference in pic was noticeable and exciting. And that was all upscaled — not native 4K. Bring in a native 4K source, add HDR (let alone HDR10+ and DV), 4K BR and UHD BR players and you have a whole new basis for comparison.

So without a doubt, 4K makes a difference. Will the world falter and skip a beat without 4k? No. Does 4k hugley improve our enjoyment of even 720×480 DVD electricity and water with upscaling? Yes. What we had with HD is clearly a step below 4K, we get more bang and enjoyment from 4k and with the larger screen sizes (I’m now at 65 BECAUSE of 4K), it is indeed changing our view of the world.

I think upgrading will be a non-issue in 2 years- Thanks to TV companies marketing it will probably all be 3840 × 2160p. If your TV breaks in 2 years I doubt you’ll be able to find a 1080p with HDR or Dolby Vision (which I feel makes a substantial difference on the smaller, more common 50 screens). Would I upgrade, sure, but not for the reason you think. I currently sit far enough away from a 50 screen that it wouldn’t make much of a difference (in MY MLP), but z gastroenterol journal if people were to come over and beanbag it on the floor in front of me then I wouldn’t want their audio and visual to be crappy (okay let’s face it I’d probably take the bean bag at 3-4 feet from screen and give them the MLP- I’m a sucker).

For the bean-baggers in the dedicated future theater; I definitely would want at least a good picture at 3 or 4 ft–when I upgrade to 96 or 108. And will likely take it even further with a big screen x 96, passive 3-D, 8K, Dolby Vision upgrade…but I think that’s IT as far as definition goes, color, contrast, etc will continue to improve over time just to feed the upgrade addiction.