What is a High Dynamic Range HDR TV? - Τι είναι μια τηλεόραση HDR υψηλού δυναμικού εύρους;

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Dolby Vision: Not all Displays are Created EqualMany don't know, but there are multiple forms of Dolby Vision. In this video we are going to talk about Dolby Vision and Dolby Vision (low latency). We will discuss how having different types of displays can cause havoc when installing a multi-zoned distributed video system.

Commentaires:
Ross Unwinso
does this mean that a full Dolby vision signal would produce a better picture than the new Dolby vision(Low latency)? i've heard that the sony tv's only support Dolby vision (low latency) so does that mean i would get a better picture on another tv like LG for arguments sake over Sony then?

AVPro
It's hard to say. When I see Dolby Vision, and then I see Dolby Vision (LL) I can not tell a difference. I think the only real diffenence is where the Dolby Vision data is decoded. Dolby Vision (LL) is decoded by the source, Dolby Vision is decoded by the television. If you were going to do some sort of pixel to pixel comparison, you may find a slightly "better" picture with Dolby Vision, but I can tell you they both look AMAZING!
Click to expand...
 
Re: Αρθρο για τις 4K τηλεοράσεις

Ian Lowe from Dolby explains what Dolby Vision is, how it works and why you need it on your next TV.

This interview was filmed in the Dolby grading suite at their London HQ in Soho Square during a Philips hosted event.
We apologise for the focus being slightly out in this interview footage.

https://www.youtube.com/watch?v=7BcC-b9Nx_Y

source:[avforums.com]

What is Dolby Vision and why do you need it? Samsung, please watch this video!
 
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HDR10 +: Η Fox μπορεί να εγκαταλείψει το Dolby Vision

Το 20th Century Fox μπορεί να αποσύρει την υποστήριξη για HDR10 +, η μορφή HDR χωρίς δικαιώματα, της οποίας είναι ένας από τους κύριους υποστηρικτές μαζί με τη Samsung και την Panasonic. Είναι καλό να διευκρινιστεί ότι επί του παρόντος δεν υπάρχουν επίσημες ανακοινώσεις. Η αμφιβολία τέθηκε από την FlatpanelsHD μετά από ανάλυση των ταινιών που διανεμήθηκαν τους τελευταίους μήνες μέσω ψηφιακών διαδικτυακών υπηρεσιών.

Η Fox υποστήριξε αρχικά το HDR10 + σε ορισμένους τίτλους, όπως οι εκδόσεις Ultra HD Blu-ray του "Bohemian Rhapsody" και "7 άγνωστοι στο El Royale". Πέρυσι, το "Alita - Angel of the Battle" ήταν ο πρώτος δίσκος που κυκλοφόρησε σε διπλή μορφή, HDR10 + και Dolby Vision. Από το τέλος του 2019, υπήρξε μια φαινομενική αλλαγή στις στρατηγικές που φαίνεται να έχουν απομακρύνει τη Fox από το HDR10 +. Δεν είναι απίθανο η αλλαγή φυσικά να οφείλεται στη διοίκηση της Disney: να θυμάστε ότι ο γίγαντας ψυχαγωγίας ολοκλήρωσε την εξαγορά του 21st Century Fox τον Μάρτιο του 2019.

Η Disney έχει αντικαταστήσει ορισμένα βασικά στοιχεία της Fox και μεταξύ αυτών ήταν οι υποστηρικτές της συμφωνίας που οδήγησε στην επιλογή του HDR10 + σε βάρος της Dolby Vision, της ανταγωνιστικής τεχνολογίας της Dolby που έχει λάβει άδεια. Ανεξάρτητα από την εταιρική κατάσταση, αυτό που είναι σίγουρο είναι ότι κάτι έχει αλλάξει από τους τελευταίους μήνες του περασμένου έτους. Το "Ad Astra" ήρθε σε ροή με HDR στα Dolby Vision και Dolby Atmos.

Το "Le Mans '66 - Η μεγάλη πρόκληση", που κυκλοφόρησε τον Φεβρουάριο, στηρίχθηκε και πάλι στις τεχνολογίες της Dolby και το ίδιο συνέβη και για τους "Undercover Spies" το Μάρτιο και για το "Underwater" (αλλά χωρίς το Dolby Atmos), το τελευταίος τίτλος που διανεμήθηκε από το 20th Century Fox. Η τάση δεν έχει αλλάξει μετά τη μετάβαση από το 20th Century Fox στα 20th Century Studios, όπως έχει δείξει το "The Call of the Forest" (πάντα Dolby Vision και Dolby Atmos). Η ίδια κατάσταση επαναλήφθηκε με τις ταινίες που διανεμήθηκαν από το Searchlight Pictures (πρώην Fox Searchlight Pictues) ή το "Downhill" (χωρίς Atmos) και το "Wendy".

Η πιθανή αποχώρηση της Fox θα μπορούσε να αλλάξει σημαντικά την ισορροπία της αγοράς. Η Disney έχει αγκαλιάσει το Dolby Vision για μεγάλο χρονικό διάστημα, καθώς και πολλές άλλες σημαντικές μάρκες που λειτουργούν με διάφορες δυνατότητες στην αγορά. Το HDR10 + εξακολουθεί να βασίζεται στην τεράστια υποστήριξη της Samsung, που έχει δεσμευτεί να ενθαρρύνει τη δημιουργία περιεχομένου, ίσως σε ανάλυση 8K. Μεταξύ των πλατφορμών που προσφέρουν ή θα προσφέρουν τίτλους σε HDR10 + αναφέρουμε τα Amazon Prime Video, Chili, Rakuten TV και Google Play Movies.

Ακούς Αλέκο (=Samsung)? Ακούω να λες!

Κάτι μου θυμίζει, κάτι μου θυμίζει...
Το Βρήκα! Την εποχή... για το πιο format θα επικρατούσε στο video. Το θυμάσαι και συ?
Άραγε γιατί να πληρώνουμε για τεχνολογίες που δεν θα απολαύσουμε ποτέ?
 
We analysed the 4K Blu-ray disc of Blade Runner 2049 using the HDR analysis tool on a Canon DP-V3120 reference broadcast monitor, and concluded that almost the entire show is below 200 nits in peak brightness.

We also used two LG 48-inch CX OLED TVs to demonstrate that the 4K HDR Blu-ray presentation looked visually similar to the 1080p SDR presentation (once the display was calibrated to a peak white of 203 nits in alignment with ITU BT.2408's diffuse white value), yet the HDR display would consume more power, and have less calibration wiggle room... just to produce a similar picture to SDR.

Warning: This video contains spoilers for Blade Runner 2049.

https://www.youtube.com/watch?v=C2vsxdaRA7w
source:[hdtvtest.co.uk]

We ran the newly released Mulan (2020) movie on Disney+ through an Apple TV box to be analysed on the Canon DP-V3120 reference broadcast monitor, and were genuinely impressed with the HDR presentation and WCG use.

We have tried to make this video as spoiler-free as possible, using only inane shots and stills.

https://www.youtube.com/watch?v=iWO0nWuX_rA
source:[hdtvtest.co.uk]

We analyse the HDR & WCG presentation on the 4K Ultra HD Blu-ray of Star Wars Episode VIII: The Last Jedi, using the award-winning HDR toolkit on the Canon DP-V3120 professional reference monitor.

With a peak brightness below 250 nits across the entire movie... is it creative intent or fake HDR?

Warning: This video contains spoilers for Star Wars: The Last Jedi.


https://www.youtube.com/watch?v=WoOh3nY5QRA
source:[hdtvtest.co.uk]

We analyse the 4K Blu-ray of The Greatest Showman using the HDR toolkit on the Canon DP-V3120 professional reference monitor, and found impressive use of peak brightness (even above 1500 nits) and wide colour gamut (WCG).

Warning: This video contains spoilers for The Greatest Showman.

https://www.youtube.com/watch?v=M6eglltuPjE
source:[hdtvtest.co.uk]

We analyse the 4K Blu-ray of Alita: Battle Angel using the award-winning HDR toolkit on a Canon DP-V3120 4K HDR reference monitor, and found the HDR10 presentation and WCG (wide colour gamut) use to be underwhelming. There's also rogue static metadata which may prevent accurate display tone-mapping.

Warning: This video contains spoilers for Alita: Battle Angel.

https://www.youtube.com/watch?v=JLmkRyhjzQ8
source:[hdtvtest.co.uk]
 
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We review the Canon DP-V3120 4K HDR reference monitor which is capable of reaching 2000 nits full screen. Other key features include eight 12Gpbs SDI inputs, one HDMI port, and an HDR analysis toolkit (false colour, pixel level value checking, split-screen comparisons, screen capture direct to USB and more image evaluation features).

Topics covered include black level, local dimming, colour accuracy, scaling and HDR performance.

https://www.youtube.com/watch?v=aMc_wG2dqSk
source:[hdtvtest.co.uk]

DP-V3120:

31"

IPS panel - RGB

F.A.L.D. white LED single layer LCD monitor : 26 vertical columns x 14 horizontal rows : 364 independently dimmable zones

Native ANSI blacks was 0.09 cd/m2(nits), if peak white was set at 100 cd/m2 with local dimming disabled,
With local dimming Auto) enabled ANSI blacks was 0.059 cd/m2(nits) if peak white was set at 100 cd/m2,

Peak light output : 1977 cd/m2 on a 10% window after calibration to D65 white point
Peak light output : 1931.4 cd/m2 on full field after calibration to D65 white point

WCG: PFS phosphor,DCI-P3 coverage:97%,Rec.2020 coverage:77% in uv.

Dolby Vision - Ready

Retail: 32,000 $
 
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-We analyse the HDR presentation on the 4K Blu-ray of The Matrix using the award-winning HDR toolkit on the Canon DP-V3120 4K HDR reference monitor, and found peak brightness exceeding 1000 nits, as well as wide colour gamut reaching Rec.2020.

Warning: This video contains spoilers for The Matrix.

https://www.youtube.com/watch?v=QiyWm2wlOf4

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-We analyse the HDR presentation on the 4K Blu-ray of Wonder Woman using the award-winning HDR toolkit on the Canon DP-V3120 4K HDR reference monitor, and found peak brightness reaching 3000 nits, as well as wide colour gamut exceeding Rec.709.

https://www.youtube.com/watch?v=8l2BtuA-g3k

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-We analyse the HDR presentation on the 4K Blu-ray of Rogue One: A Star Wars Story using the award-winning HDR toolkit on the Canon DP-V3120 4K HDR reference monitor, and found peak brightness reaching 1400 nits, as well as wide colour gamut exceeding Rec.709.

Warning: This video contains spoilers for Rogue One.

https://www.youtube.com/watch?v=2KOey712wHg
source:[hdtvtest.co.uk]

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We review the HDR presentation of the Back To The Future 4K Blu-ray disc using the HDR toolkit on the Canon DP-V2411 professional reference monitor, and found peak brightness reaching 1200 nits, as well as wide colour gamut exceeding Rec.709.

Warning: This video contains spoilers for Back To The Future.

https://www.youtube.com/watch?v=CcpXo3IXupQ

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We analysed the HDR picture quality of The Mandalorian Season 2 Episode 1 on Disney+, using a Canon DP-V2411 reference monitor with HDR analysis toolkit, as well as a Sony BVM-X300 professional mastering monitor to verify.

We have tried to make this video as spoiler-free as possible in our opinion... please let us know if it's not, and we'll change the headline.

https://www.youtube.com/watch?v=3HqA8FcOARI
source:[hdtvtest.co.uk]

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We review the HDR presentation of Lord of The Rings: Fellowship of The Ring in the 4K Blu-ray trilogy boxset using the HDR toolkit on the Canon DP-V2411 professional reference monitor, and found peak brightness reaching 1000 nits, but little evidence of WCG (wide colour gamut) use.

We analysed the 2-disc Extended Edition (EE) of The Fellowship of The Ring.

https://www.youtube.com/watch?v=JzJw33CcOZo
source:[hdtvtest.co.uk]
 
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HDR Ecosystem Tracker fall 2020 update...https://www.flatpanelshd.com/focus.php?subaction=showfull&id=1606977052


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source:[flatpanelshd.com]
 
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We review the 4K Blu-ray disc of The Lord of The Rings: The Two Towers in the Trilogy boxset, and found many instances of digital noise reduction (DNR) and edge enhancement (EE) despite great use of HDR (occasionally even exceeding 2000 nits), as well as more generous deployment of WCG (wide colour gamut) colours than in The Fellowship of The Ring.

Our HDR & WCG analysis was performed using the Canon DP-V2411 reference monitor with inbuilt HDR analysis toolkit.

This video was graded and uploaded in HDR10, and so is best viewed on an HDR display.

https://www.youtube.com/watch?v=ba1F0hyMvr4
source:[hdtvtest.co.uk]


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source:[Yoeri Geutskens/twitter.com]
 
Απάντηση: -- OLED --

https://www.youtube.com/watch?v=XPzM3NDGuSc

We demonstrate why a high peak brightness is important for an OLED TV to accurately reproduce the creator's intent by preserving more specular highlight detail, in response to some Youtube comments saying that "OLED TV is already bright enough, so you don't need more brightness" from the likes of the LG G1 Evo OLED or the Sony A90J Master Series OLED.

This video demonstration was done using two LG CX, one calibrated to 400 nits peak brightness in HDR, the other to its natural maximum peak brightness of 650 nits in HDR.
Click to expand...

source:[hdtvtest.co.uk]
 
We keep hearing people claiming that their OLED or QLED TV is already too bright, and that they'll need to wear sunglasses to watch HDR content.
So we took some brightness measurements of random objects in real life, on a semi-sunny day in Manchester where it's not so bright that we felt compelled to wear sunglasses.

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πηγή:[hdtvtest.co.uk]
 
Ένα αρκετά ενδιαφέρον και ενημερωτικό stream, περί φωτεινότητας και όχι μόνο, από Ninjician AV

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We compare Disney+ IMAX Enhanced with expanded aspect ratio vs 4K Blu-ray standard widescreen.
Movies compared on two calibrated LG C1 OLED TVs were Avengers: Infinity War, Avengers: Endgame, Captain America: Civil War and Black Panther.

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For more detailed information, see our cookies page.
πηγή : hdtvtest.co.uk
 
Members of the Digital Cinema Initiatives (DCI) Technical Committee explain the double-blind image testing that culminated in the numbers used by DCI for minimum black level and peak brightness of a differentiated theatrical High Dynamic Range (HDR) experience.
DCI thanks everyone involved in this testing effort for their contributions and opinions.
DCI hopes you find the video informative.

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πηγή : dcimovies.com
 
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