OLED is bright enough for specular hightlights when compared to an LED?

[Bishop_99]

HI. I currently have the Sony X950H and the X90k. The X950H is the one I watch in a completely dark room, 49 inch screen and I sit 2 feet away from it only when I am watch movies. Outstanding tv and the slight blooming doesn't bother me.

As a tech fan, OLED has my interest and I have been using that since my Galaxy S4 phone in 2013.

My question is about brightness and the brightness of the specular highlights. I need a 48 inch to 50 inch max as that one is going into a room.


Attachment 284217

Based on these measurements, I have some concerns. For the most part, the A90K has a much lower brightness when compared to the X950H. Sure, I am in a dark room, but the 100% window of over 600 nits on the X950H and the over 100 nits on the A90K in the 100% window concerns me.

In particular movies like The Matrix and Interstellar, when Neo enters the construct and they visit the second planet in Intersteller, that white screen looks very bright in HDR. The specular highlights on the A90k seem to be half of each window of the X950H. At least on paper

In general and a question for the people that own an OLED and have a very high end LED, so these numbers show that the A90k will be much dimmer in HDR compared to what the X950H does?

Thank you to those that can reply. I am considering this and I would greatly appreciate any feedback.

One more thing. Lets say I like to watch a lot of movies that are 21x9 and for a majority of the time the entire 16x9 isn't being use, the blackbars are black and not degrading. Will that cause a slight burn in from on the OLED? I don't mean like a logo showing up, but since the black bars aren't being used, will the 21x9 degrade quicker to the point you can easily spot the sort of but in of the line that generally is the black bar?


I ask because this happened to my Galaxy S4 as I had it on max brightness at all times and after 4 months, I could see the burn in from the portion of the screen that was being used and the black bars that weren't.

Thanks

[jibucha]

absolutely! - 'improvement in contrast' (and color/naturalness), is the specific technical reason, which gets into the range of black to white - it's really not about peak nits, but perception in-between black and white (especially at your preferred closeness to the screen) - I probably just got myself in a lot of trouble, 'with a lot of people' - - but, that's how things usually are here

ps :: 'an afterthought', is that on our OLED's, in my experience, even though in Dloby Vesion and FilmMaker Mode, I have to turn the brightness down, as it's just too much, giving me a headache and extreme dissatisfaction - my point is that I think you'll just be fine with your perception of brightness (highlights / and, improved detail within the highlights), given the improved contrast range

Originally Posted by Bishop_99

HI. I currently have the Sony X950H and the X90k. The X950H is the one I watch in a completely dark room, 49 inch screen and I sit 2 feet away from it only when I am watch movies. Outstanding tv and the slight blooming doesn't bother me.

As a tech fan, OLED has my interest and I have been using that since my Galaxy S4 phone in 2013.

My question is about brightness and the brightness of the specular highlights. I need a 48 inch to 50 inch max as that one is going into a room.


Attachment 284217

Based on these measurements, I have some concerns. For the most part, the A90K has a much lower brightness when compared to the X950H. Sure, I am in a dark room, but the 100% window of over 600 nits on the X950H and the over 100 nits on the A90K in the 100% window concerns me.

In particular movies like The Matrix and Interstellar, when Neo enters the construct and they visit the second planet in Intersteller, that white screen looks very bright in HDR. The specular highlights on the A90k seem to be half of each window of the X950H. At least on paper

In general and a question for the people that own an OLED and have a very high end LED, so these numbers show that the A90k will be much dimmer in HDR compared to what the X950H does?

Thank you to those that can reply. I am considering this and I would greatly appreciate any feedback.

One more thing. Lets say I like to watch a lot of movies that are 21x9 and for a majority of the time the entire 16x9 isn't being use, the blackbars are black and not degrading. Will that cause a slight burn in from on the OLED? I don't mean like a logo showing up, but since the black bars aren't being used, will the 21x9 degrade quicker to the point you can easily spot the sort of but in of the line that generally is the black bar?


I ask because this happened to my Galaxy S4 as I had it on max brightness at all times and after 4 months, I could see the burn in from the portion of the screen that was being used and the black bars that weren't.

Thanks

[Bishop_99]

Originally Posted by jibucha

absolutely! - 'improvement in contrast' (and color/naturalness), is the specific technical reason, which gets into the range of black to white - it's really not about peak nits, but perception in-between black and white (especially at your preferred closeness to the screen) - I probably just got myself in a lot of trouble, 'with a lot of people' - - but, that's how things usually are here

ps :: 'an afterthought', is that on our OLED's, in my experience, even though in Dloby Vesion and FilmMaker Mode, I have to turn the brightness down, as it's just too much, giving me a headache and extreme dissatisfaction - my point is that I think you'll just be fine with your perception of brightness (highlights / and, improved detail within the highlights), given the improved contrast range

Thank you so much, I truly appreciate that! I vaguely remember hearing that OLED's didn't need the peak brightness of LCD's because other factors played a bigger role.

What you mentioned should be. Thanks a million once again!!!!

[Deciazulado]

OLEDs on average seem to be about 1-1.5 f/stops less peaky than the brightest LCDs on general. One f-stop difference is like having a room with one light on and then turning another one on. (1 f/stop is half or double) With some massaging and having the room completely dark your eyes can compensate that difference.

Specular highlights (shiny reflections for example) tend to be a small area of the image.

The full 100% window is the worst case scenario, in which the OLED limits the output because that's when all the OLEDs would be full on at the same time. Even in that case 600:100 is about 2.5 f-stops. This would be a completely white image like a fade to white. If Neo and Morpheous occupied 1/4 of the screen dressed in black is more like a 75% window and if you're watching it in its Scope OAR it's more like a 50% window. I actually run the OLED a little darker than the EOTF to gain a little specular highlight breathing room and I watch movies in the dark, as God and Mann intended. And with modern tonemapping or the Optimizer/DV schemes and better monitors this is a lesser issue.

I think most OLEDs might have a measuring device to compensate the normal "wear" of using the OLEDs, at least mine (old LG) goes through the "cycle" after 4hours+ of use when you turn it off. (It has a red LED inside that you can see from the grille holes that stays on for a while after you turn the TV off after you've used it the 4 hours and then goes out.) So far no letterbox bars or pillarbox bars.

All I can say is 4K OLED looks better than IMAX.*



*except for size. Kudos for sitting at 2' for the 49". I too sit at the same equivalent movie field of view distance when watching Scope movies from my OLED size. Makes me feel I'm almost here:

[oddbox83]

OLED excels at specular highlights IMO.

For my viewing, 4:3 was the ratio I probably watched the most outside of full 16:9. Zero issues after 4+ years of using OLED TVs.

[Bishop_99]

Thank you both as well! It eases my hesitations about OLED as I was bit cautious about spending too much money if other issues would be a factor. Different technology's may work in different ways, great information everyone!