You are correct that the difference between 1080p and 4k is perceptible
-- with statistical significance -- even at ordinary viewing
differences. But it is not substantial, ranging around a third of a
grade of improvement. In contrast (no pun intended), going from SDR to
HDR offers a full grade of improvement, at much lower data increase, as
does each doubling of frame rate.
As to sales, well, people buy premium grades of gasoline, too.
TTFN,
Mark
On 10/15/2018 10:45 PM, Manfredi (US), Albert E wrote:
"Although there is very little to no 8K content available, Japan is expected to spur
more interest in the high-res format, which has twice the resolution of 4K and 4x the
resolution of 1080p HD."
First off, 4K has four times the resolution of 1080p (twice as many pixels
vertically, twice as many horizontally). And therefore, 8K has four times the
resolution of 4K, and 16 times the resolution of 1080p. We're definitely
entering into diminishing returns.
A TV screen of 16:9 aspect ratio, viewed at 1.5 picture heights distance, which
is really, really close, will give the viewer a 61-degree field of view.
Really, unless the material is carefully recorded, for just this kind of
viewing, this is much like sitting in the front row at the movies. Nauseating.
So, with 4K, even this drastic scenario provides an angular separation between
pixels of 1.15 arcmin. People with good eyesight (or perhaps wearing reading
glasses?) should be able to barely make that out. With 8K, that angular
separation is reduced to 0.57 arcmin. Okay, that's better.
At a still very close 2 picture heights viewing distance, 4K provides 47.7
degrees of FOV, still huge, and 0.86 arcmin of angular separation between
pixels. I think even this is closer viewing than many people would want.
It's unclear to me how you wow an audience with true 8K material, unless with 8K
come other enhancements that are unrelated to resolution. The difference between
1080p and 4K, on the other hand, with some of these huge 80+" TVs, is
perceptible. OLEDs make a reasonably good case for 4K. Not sure whether this extends
to 8K.
Bert
--------------------------------------------------
https://www.tvtechnology.com/news/ihs-8k-set-shipments-to-reach-2-million-by-2020
IHS: 8K Set Shipments to Reach 2 Million by 2020
4K/UHD sets will represent more than half of all TVs shipped globally by 2019
Tom Butts7 hours ago
LONDON-Just as the UHD/4K TV set market heats up, a research firm is predicting
that the next wave-8K-is not far behind.
With the debut of 8KTVs now making their way to the market by the end of 2018,
business information provider IHS Markit says it expects less than 20,000 sets
to be shipped globally by the end of this year, with more than 430,000 sets
sold in 2019, eventually approaching 2 million units by 2020. The growth will
be centered around sets 60-inches are larger, with 65 inch TVs accounting for
more than half of the volume.
For the burgeoning 4K market, IHS says more than half of the 226 million TVs
expected to ship in 2019 will be UHD TV models. Global shipments of 4K/UHDTVs
are expected to to grow 3.6 percent year over year in 2018, with additional 1.4
percent growth in 2019.
"Growth in the TV market typically is the result of more attractive retail prices for
large-screen sizes and the continued commoditization of 4K resolution, driving TV replacements and
upgrades," said Paul Gagnon, research and analysis executive director, IHS Markit.
"However, this growth through price compression has a negative effect on profits, so TV brands
are actively looking for more growth from advanced TV models to improve earnings."
Technologies like 8K, organic light-emitting diode (OLED) and quantum dot (QD)
carry substantial premiums, and even 4K TVs still carry premiums of more than
35 percent at screen sizes where 1080p resolution is still an option, such as
40-inch to 49-inch TVs.
OLED TV is expected to grow more than 40 percent in 2019, rising to 3.6 million
units. This growth is in line with previous forecasts, because demand is
essentially matching industry production capacity. The size mix still favors
55-inch TVs, based on current prices, but it will transition to mostly 65-inch
TVs by 2020, when new production capacity is optimized for larger screen sizes,
and when substantial growth is expected in the OLED TV category.
Quantum dot LCD TV shipments are now forecast to exceed 4 million units in 2019, based on more
aggressive pricing and the introduction of transitional quantum-dot-equipped LCD TV models.
"The high-end prices of non-QD-equipped LCD TV models and the prices of the low end
QD-equipped LCD TV models have moved closer together," Gagnon said. "This extension of
the quantum dot LCD TV lineup into more moderate price ranges effectively reduces the quantum dot
premium to less than 100 percent at mid-range sizes, opening up the category to a larger
addressable market of consumers."
Although there is very little to no 8K content available, Japan is expected to
spur more interest in the high-res format, which has twice the resolution of 4K
and 4x the resolution of 1080p HD. In advance of its plans to broadcast the
2020 Summer Games in Tokyo in 8K, public broadcaster NHK announced earlier this
year that it plans to launch a channel devoted to 8K by the end of 2018.
Samsung and LG, among the largest consumer electronics manufacturers in the world, are introducing new 8KTV sets to markets beyond its shores. Earlier this month Samsung announced initial shipments of its new 85-inch Q900 QLED television to select retailers. To make up for the lack of 8K content, Samsung has built an AI-based upscaler, called the Quantum Processor 8K, into the television to produce 8K resolution regardless of the video's original resolution, the company said.
At CES in January, LG previewed an 88-inch class 8K OLED TV the company called
"world's first OLED 8K TV set." It uses more than 33 million self-emitting
pixels to create its contrast ratio and true blacks produce its picture quality. LG
Electronics says it expects OLED TV shipments to double in 2018 and to reach five million
by 2022.
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