Som man kunde ana så är det rätt mkt ful-spel som ligger bakom det här. Citerar Flatpanels:
"UHD Premium" is a certification and logo created by the UHD Alliance. What most people do not know is that while many companies are members of the UHD Alliance, it was mainly Samsung’s idea. Based on our sources Samsung had hoped to create a certification that would disqualify OLED. Those plans were squashed when one particular player joined the group (not LG). It is not important who but ultimately the alliance created two contrast specifications as part of "UHD Premium"; what many people are referring to as OLED and LCD specifications.
Vidare, Vizio tar upp några av de problem jag pekade på ovan, "mätningarna" säger egentligen inget.
"VIZIO sees value in the industry specifying a premium experience for consumers but the "Premium 4K" certification program proposed by the UHDA falls short and has serious problems. The UHDA program does not sufficiently detail how to measure for or specify items like peak brightness or black level and as a result, certifies some products that we don't believe should qualify for a UHD Premium certification and would ignore other products that should be certified.
Specifically, the certification's 1000 Nit peak brightness spec does not address any limitations of blooming of haloing artifacts, which can dramatically affect dynamic range (contrast) and overall picture quality. The testing requirement only measures the center brightness point of a test pattern and does not measure how the surrounding black level is affected. To maximize contrast, the peak brightness should be measured at the same time, with the same pattern as black level, as is done with ANSI contrast measurements.
Similarly, the certification only states two specifications for Dynamic Range, or peak brightness vs black level with the LCD version specified at 1000 nit brightness with 0.05 nits black level. When looking at dynamic range of the specification, 1000 nits-to-0.05 gives you 20,000:1 contrast ratio. VIZIO's Reference Series gives you 800,000:1 contrast ratio, but in theory does not meet the UHDA "Premium 4K' spec. VIZIO's focus is performance and true dynamic range, which is a balance between brightness and black level.
...
VIZIO felt the UHD Alliance was created by certain manufacturers with an agenda to promote specific hardware technologies at the expense of others, and to prevent other manufacturers' products from being certified, regardless of their picture quality merits. As a result, VIZIO has a number of concerns with the authenticity of the agenda of the organization and whether its certification program will realize the promise of HDR performance and benefit consumers. These concerns are evidenced by certification specifications that are lower quality than what VIZIO believes should be set for a true premium consumer experience.
UHD Premium märkta UHD Blu-ray spelare är bara det senaste larvet. Följer en spelare UHD Blu-ray standarden så är den automatiskt kapabel nog att följa dito UHD Premium märkning. I klartext, vad det handlar om är att få möjligheten att sätta en extra klisterlapp på lådan, varken mer eller mindre.
Så. Om du inte insett det än: UHD Premium märkningen är skräp, låt inte den styra dina köpval.
Prisjakt
Sökningen pågår
Avancerad sökning
3 bilder
Minhembio - Senaste nyheterna
tnorlund 
Fler
Vilka bilder visas här?
