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Old 01-23-2019, 09:57 PM   #8181
Staying Salty Staying Salty is offline
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New Samsung UHD OLED Display Already Making Major Inroads into Premium Notebook/Laptop Market

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- World’s first 15.6-inch UHD (ultra-high definition) OLED panel to be mass produced beginning next month

- Combining ultra-high resolution and leading-edge HDR support in helping to take video streaming and gaming to the next level
Quote:
The new panel features a brightness level ranging from 0.0005 to 600 nits, and a dynamic contrast ratio of 120,000:1. Compared to LCDs, black color appears 200 times darker and whites twice as bright, maximizing the benefits of HDR to deliver the utmost in high-resolution video and images.
Got to Samsung.
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Old 01-23-2019, 10:00 PM   #8182
Geoff D Geoff D is online now
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Originally Posted by DisplayCalNoob View Post
Tyler Pruitt has said that the fact current display tech is gamma based, Dolby expects D65 and 2.2 gamma because of the panels . Also, I assume when you calibrated, you calibrated to a specific gamma of choice, and obviously D65. Those Gain settings will represent whatever gamma setting calibrated to.

Offset negatively affects PQ black level, lifting blacks and dark shadow detail.
The TV's process everything back to gamma, yes, Stacey Spears has said the same thing, but that doesn't mean that you actively *calibrate* in/with gamma because the PQ curve is still a completely different EOTF that's being mapped into what the TV's gamma-led system can handle for image processing, and the inverse of that mapping is then applied to the image so it resembles the PQ EOTF at the point of display. I don't use any gamma at all in HCFR calibration for HDR signals, there's a reason why the gamma selections under Preferences in HCFR are in a completely different section to the HDR EOTF(s), and aren't available for use at all when HDR is selected.

And I didn't say that changing the gamma control itself doesn't affect the HDR image, it's a control like any other on the TV, what I'm saying is that it shouldn't be needed. As you say, it will affect black level and light output accordingly as it's moved up and down, if someone's PQ curve is shallowing or overshooting then I guess it's worth trying to adjust the gamma control as well, along with brightness, contrast etc. But actually calibrating to a 2.2 gamma rather than the ST.2084 EOTF is going to wreck how the PQ curve responds, shirley?

[edit] As I said, the Dolby 'golden reference' file that can be pre-loaded by the consumer into certain TVs using measurements of a set of RGBW slides doesn't have to be done in HDR space, it's practically the same thing as profiling a meter using a spectro, that doesn't have to be done in HDR space either. Yes, Dolby Calibration 2.0 specifically disables the PQ EOTF to calibrate for greyscale and measure those four RGBW panels at peak luminance in 2.2 gamma and determine what offsets it should be using, but as soon as you physically watch something in Dolby Vision or HDR10/+ then the PQ EOTF will be reenabled and mapped into the display gamma.

Dolby being this "dynamic" system makes it a bit trickier to do a calibration using fixed points in the PQ curve which is why this simpler gamma calibration method has been devised, the inference being that Dolby's mapping takes care of the rest, but it's a specific calibration mode in certain TVs that is triggered by the relevant metadata in the HDMI signal - so if you're calibrating to a flat 2.2 gamma for DV/HDR10 using SDR or HDR10 greyscale patterns without actually triggering this Dolby Calibration mode then that's all kinds of wrong, you'll have no idea how your PQ curve is actually responding when watching PQ content.

Last edited by Geoff D; 01-23-2019 at 11:21 PM.
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Old 01-23-2019, 10:18 PM   #8183
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Originally Posted by Geoff D View Post
Yeah, I mean people have tried before, this effort from Toshiba is from seven years ago https://www.techradar.com/uk/reviews...1080745/review and sounds mightly similar to what Dimenco have done: lenticular filters in front of the screen and cameras that track the user to determine the sweet spot.
So only one person can sit in front of the screen, to be tracked? Not a whole family?
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Old 01-23-2019, 10:18 PM   #8184
Geoff D Geoff D is online now
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For home video releases on disc I'm sure there are the economics involved as well. Does Fox feel like it would actually sell more 4K discs if they started including DV? Honestly, I don't think the HDR format on the disc has enough bearing for anyone on purchasing, the movie itself is the driving force.

How many of the DV grades we're seeing on disc are there because the workflow used for the previous deliverables also provided that grade, so you already have it to use. I'm not aware of that side of the house, but Penton has provided quite a few posts that show that the Dolby process seems to support multiple grade output from a single workflow.
No mate. Dolby Vision in the cinema is not the same thing as Dolby Vision in the home, you can't just press a button and translate a 108-nit grade designed for the specific gain & contrast of Dolby Cinema's screens and projektors into a grade intended for direct-view home display at up to 4000 nits. As the video ^ posted by Penton sez, the theatrical grade is a "solid starting point" for the home grade but they really are quite different animals. It's when that home deliverable is graded to the satisfaction of all involved that the other major functions of DV like the metadata creation and subsequent generation of possibly multiple trim passes e.g. HDR10, SDR are carried out.

This is why, despite some people being told this repeatedly in threads like that for Bohemian Rhapsody, Fox can and do theatrically grade in DV but then go on to do their own thing when it comes to the consumer deliverables. One doesn't always beget the other, and vice versa of course: something like the original Cloverfield wasn't finished in DV theatrically but there it is in DV on UHD disc nonetheless.
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Old 01-23-2019, 10:19 PM   #8185
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Originally Posted by mrtickleuk View Post
So only one person can sit in front of the screen, to be tracked? Not a whole family?
I said "user" but that's too literal, the quoted Toshiba TV was apparently able to track up to nine (?) different viewers at once.
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Old 01-23-2019, 11:01 PM   #8186
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Originally Posted by Geoff D View Post
I said "user" but that's too literal, the quoted Toshiba TV was apparently able to track up to nine (?) different viewers at once.
Not suitable for some Catholic families then?
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Old 01-24-2019, 10:05 AM   #8187
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Default Dell & Dolby Vision

Dell's XPS 13 is its first laptop with Dolby Vision.
https://www.dell.com/en-us/shop/lapt...13-9380-laptop
https://www.pcmag.com/review/365771/dell-xps-13-9380



The 13.3-inch display comes in both Full HD and 4K UHD flavors.
The new XPS 13 includes a 8th Gen Intel Core processor with UHD Graphics 620 integrated graphics processor.
https://en.wikichip.org/wiki/intel/uhd_graphics/620
https://www.intel.com/content/dam/su...WhitePaper.pdf
https://twitter.com/VishalPushesIt/s...96421897400321



As the XPS 13 does not come with HDMI but Thunderbolt DisplayPort and USB Type-C, a USB Type-C to HDMI adapter is needed to connect to an external TV according to a Dell representative.
https://www.dell.com/en-us/shop/acce...s/apd/470-abqn
https://www.avsforum.com/forum/465-h...l#post57310992
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Old 01-25-2019, 03:00 AM   #8188
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Let’s get even smarter
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Old 01-25-2019, 03:40 AM   #8189
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Originally Posted by Penton-Man View Post
Lets get even smarter
Lets get smaller

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Old 01-25-2019, 04:16 AM   #8190
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Let's get dangerous

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Old 01-25-2019, 05:30 AM   #8191
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Originally Posted by Waboman View Post
Lets get smaller

Let's get small - YouTube
Yeeessss, saw Steve in 1977 at the Assembly Hall in Champaign IL.
It was cosmic, and everyone there had a great time.
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Old 01-25-2019, 06:47 PM   #8192
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Today is a beautiful day here on the island,


^ named in honor of Medal of Honor recipient Michael A. Monsoor
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Old 01-25-2019, 06:52 PM   #8193
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Lets get smaller...
google’s Pixel 3 smartphones pack only a modest 12.2 Mp camera but its AI machine learning algorithms produce images that look like a 30 Mp camera…..think of the implications
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Old 01-25-2019, 06:56 PM   #8194
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Let's get dangerous
let’s make vfx and animation peoples’ lives easier – https://cloud.google.com/blog/produc...-entertainment
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Old 01-25-2019, 06:58 PM   #8195
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Originally Posted by gkolb View Post
Yeeessss, saw Steve in 1977 at the Assembly Hall in Champaign IL.
gkolb – did you attend UI @ Urbana–Champaign?
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Old 01-25-2019, 09:07 PM   #8196
Staying Salty Staying Salty is offline
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WOW, only took 100 years for computers to catch up with good ole Naval engineers.
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Old 01-25-2019, 09:16 PM   #8197
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Originally Posted by Agent Kay View Post
Too much on topic stuff Penton, back to top gun
o.k. then, follow up to this past post from earlier in the month - https://forum.blu-ray.com/showthread...s#post15956650

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Old 01-25-2019, 09:19 PM   #8198
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The commissioning ceremony can be viewed on the Navy Live blog at http://navylive.dodlive.mil/2019/01/...commissioning/
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Old 01-25-2019, 09:23 PM   #8199
Penton-Man Penton-Man is offline
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named in honor of Medal of Honor recipient Michael A. Monsoor
https://www.navy.mil/ah_online/ftrSt...ue=3&id=108370
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Old 01-25-2019, 09:45 PM   #8200
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Originally Posted by gkolb View Post
Yeeessss, saw Steve in 1977 at the Assembly Hall in Champaign IL.
It was cosmic, and everyone there had a great time.
He was a wild and crazy guy. Good times. I was a bit young in '77, but I did enjoy his albums in my misspent youth.

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Originally Posted by Penton-Man View Post
google’s Pixel 3 smartphones pack only a modest 12.2 Mp camera but its AI machine learning algorithms produce images that look like a 30 Mp camera…..think of the implications
No way, Jose. One step closer to Skynet.
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