Sony A90J OLED Shown to Hit 1300 Nits of Peak Brightness! Is It Real?
- Thread starter OM_2K19
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Donivlapog
Well-Known Member
I seems like. With the XR processor in place, sky is the limit to its processing prowess.
lightgamer
Well-Known Member
The processor has absolutely nothing to do with a TV's brightness. The brightness of OLED panels is limited by the efficiency of the material and how well you can cool it down. If the organic material gets hot, burn-in accelerates a lot.
lightgamer
Well-Known Member
Not necessarily. Sony is probably using both the new emitter panels and the metal cooling plate. LG is only stating a 20% efficiency increase in the panel, so if they're not using the metal cooling plate they will likely be below 900 nits with the G1.
They made a big blunder this year if that's true. The G1 will make almost no sense over the C1 since it's supposed to be double the price. If I'm ready to pay that premium, I'll pay a bit extra and get the Sony. Also this year Sony's TVs have HDMI 2.1 so it's a no-compromise solution.
Donivlapog
Well-Known Member
The processor has many interrupt cycles and you can't discount these functionalities. They have some role to do. Are we chip design engineers to rule that out?
lightgamer
Well-Known Member
The processor has mostly to do with image processing, not brightness. Brightness is hardware and processor can't do much about it.
This is such a strawman argument that I can't even... By that logic you should stop commenting on a TV forum since you aren't a TV designer.
Oh, and BTW I have been writing extremely latency-sensitive, bare-metal level code for years in C++ that directly executes on the processor/network card. I'm very intricately aware of what a general-purpose or a specialised processor is capable of.
Donivlapog
Well-Known Member
Oh boy! For years your c++ coding must have given the processors a heat stroke or something!
lightgamer
Well-Known Member
So now you are back to taunts since you can't reply properly in a technical sense. I'm refraining from that else you'll come back with 'you hurt me deeply again' like last time.
And yes, I've been programming directly on the software layer for ASICs and wrappers around FPGAs for years. While I won't claim to be a hardware expert, I know more than most folks and have held long conversations with engineers from Qualcomm and Xilinx. Though you need to just have some common sense to realize that processor can't change hardware characteristics.
shaiju_o_thomas
Well-Known Member
That’s why the A90J has physical parts that act as heat sink and allow faster cooling. Could be very similar to Panasonic GZ2000 and HZ2000.
A processor can only do limited heavy lifting to distribute brightness across pixels through computational powers.
lightgamer
Well-Known Member
Yeah, pretty much. But I think the A90J also uses the new LG panel along with the cooling plate to achieve this much brightness.
Historically sony was aggressively restricting brightness even in software level using ABL algorithms. Also dynamic tone mapping algorithm should be tweaked differently to deal with oled's brightness limitations. The first limiter is a direct circuit breaker and the second one is based on the brightness of picture in screen at the moment. These two restrictions will now be either removed or toned down which would make the 200nits jump required for sony tvs to become on par with LG's 900nits.
Going beyond 900 nits will absolutely need hardware solutions including and not restricted to efficient cooling. Even with that long term effects on burn-in will be a wait and watch.
The priority of LG has been to counter Samsung's ad featuring 0 burn-in. So they have been taking a conservative approach with aggressive ABL.
Brightness of the oled tvs is not the biggest problem compared to burn in in real world use particularly with limited content to make use of 1000+nits and advantages of 0 nit absolute blacks.
With the micro LED tvs in the horizon, 1000+ nits will seem like more and more a necessity for the competetion and hence the retweaking. Should not be surprised of the burn-in becomes a night mare.
But sony is not known to take such risks. Possibly they would have run tests on older panels with ABL restrictions removed and other optimizations for a few years to come to the conclusion that it is market ready.
Having said that, point source brightness for very short time like a bullet shot or a background panning sun are really not a huge risk. Consistent high nits over a sustained period of time is what is dangerous. A mature processor can be tuned to make use of these to open full or limit brightness etc. It is a balancing act. Hopefully sony got it right.
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Sony did it in the past with the Master OLED monitors. Probably they are now bringing that Know-How to Consumer segments to counter Samsung on Brightness.
lightgamer
Well-Known Member
The assumption is that the lifetime of a newer OLED is at least the same as the outgoing model. Considering that, only hardware can increase brightness.
I'm sure that with custom firmware you can take even the CX to beyond 1000 nits by blasting voltage through the pixels. That will destroy the panel very quickly though.
Burn-in is the only problem with the current OLED TVs. I'm sure both Sony and LG are quite conservative even this year and most of these increases are from the new EVO emitter and the cooling plate Panasonic used in their 2000 line of OLED.
Donivlapog
Well-Known Member
I don't really like the eye searing bright TVs and if OLEDs evolve into bright supernovae in the years to come, it may disappoint a section of the consumers.
You can always reduce the brightness till 0 or whatever you like.
But you cant do the opposite unless the tv can handle.
So basically it looks like the LG C1 is going to have competition this time from the Sony A80J as now Hdmi 2.1 is available.
The A90J off course will be their flag ship & compared to the LG G1 Evo Oled.
Very interesting year to upgrade my B6 Oled, super excited for the Oleds this year
The A90J off course will be their flag ship & compared to the LG G1 Evo Oled.
Very interesting year to upgrade my B6 Oled, super excited for the Oleds this year
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Donivlapog
Well-Known Member
Is the B6 still going good? Hope no burn ins so far...So basically it looks like the LG C1 is going to have competition this time from the Sony A80J as now Hdmi 2.1 is available.
The A90J off course will be their flag ship & compared to the LG G1 Evo Oled.
Very interesting year to upgrade my B6 Oled, super excited for the Oleds this year
No burn ins at all & i game on xbox at least 3-4x a week for 1-2 hrs depending on time available.
Been gaming on this tv since day one of purchase & it has been 3.5 years plus owning it.
I m happy with the B6 but need to get a 120hz oled with hdmi 2.1 support as i just purchased the Xbox SX.
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