Samsung Q90T 4K QLED Hands-On - Page 6 - AVS Forum | Home Theater Discussions And Reviews
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post #151 of 168 Old 05-23-2020, 04:00 PM
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Originally Posted by AVS Forum News & Reviews View Post
The Samsung Q90T is Samsung's top 4K QLED model for 2020.
Hello, can you please confirm with your sources at Samsung whether the Q90T has a 8 bit or 10 bit panel? Thanks

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post #152 of 168 Old 05-23-2020, 05:44 PM
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Originally Posted by Lorderl View Post
Hello, can you please confirm with your sources at Samsung whether the Q90T has a 8 bit or 10 bit panel? Thanks
8-bit+FRC.

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post #153 of 168 Old 05-23-2020, 09:27 PM
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Originally Posted by Keabrown79 View Post
Well I'll know Tuesday, if I keep my order... after finding out that all the 4k models are 8 bit + frc panels I might be going OLED with a warranty for the same price as the q90t... I need to sleep on it.
I think the dead pixel is actually a speck of dust. I got it to move by tapping my screen. But it just dropped down about 12" (or another speck appeared). If I view the defect head on, it looks like a dead pixel, but if I view it off angle, it disappears, revealing healthy pixels underneath. I haven't been able to dislodge it again, unfortunately. Perhaps Samsung has a defective manufacturing process that's allowing contaminants into the panels.

Regarding color, what's the consequence of having 8bit+FRC (the Q90T) instead of 10bit (on the LG CX, for example)? I've eschewed OLEDs because of concerns about burn-in and peak nits of 300/700 (compared to 850/1300 on my Q90R).
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post #154 of 168 Old 05-23-2020, 09:35 PM
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If anyone has the 85", I am looking for the exact measurement from the top vesa hole to the top edge of the TV.
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post #155 of 168 Old 05-24-2020, 07:03 AM
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Quote:
Originally Posted by Spacewizard View Post
Regarding color, what's the consequence of having 8bit+FRC (the Q90T) instead of 10bit?
This is my concern as well. What videos I found did not go into +FRC. What's the impact on 4k disc viewing, streaming etc.., or on gaming?

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post #156 of 168 Old 05-24-2020, 07:14 AM
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Samsung Q90T 4K QLED Hands-On

Quote:
Originally Posted by Lorderl View Post
This is my concern as well. What videos I found did not go into +FRC. What's the impact on 4k disc viewing, streaming etc.., or on gaming?

It doesn’t have an impact on those viewings and it also was never confirmed that FRC is being used on the Q90T. I posted a link to an easy way to see if Samsung is using FRC and we discussed this in the Q90T owners thread. Since it appears only the Q90T is native 10bit there has been conflicting information.

https://en.tab-tv.com/?p=20864

“Screen 8bit + FRC or 10bit how to check in Samsung

There are several ways to check which screen is installed on your Samsung TV.

1 way – the easiest to find out the type of screen, see the technical specifications. Until 2020, Samsung indicated the number of shades. If there was a footnote, one could find a note that dithering technology was applied. But since 2020, this does not work. Samsung has stopped, for example, in QLED TVs, indicate the number of shades displayed on the screen. It is only indicated that the screen supports 100% color tones in quantum displays. But you can pay attention to the backlight technology used in the TV. The backlight technology is applied to a specific type of screen.
Supreme UHD Dimming – TV 8bit + FRC
Ultimate UHD Dimming (pro) – the TV screen is 10bit.”

They also provide a chart for this years models:

https://en.tab-tv.com/?p=20260

“Screens in QLED 4k 2020

In 2020, the Q60T, Q70T, Q80T series of TVs installed updated screens. They use a new type of backlight, a double LED (backlight consists of two types of bright white LEDs and warm white light), which improves the overall perception of the image. But the screens themselves use cheaper materials and technologies, so the screens have a color depth of only 8 bits, to increase the number of shades, dithering technology (backlight blinking) is used. Q60T and Q70T backlight side, Q80T and Q90T direct. The Q90T model is produced with screen matrices of the previous 2019 series with a color depth of 10 bits without dithering. Yes, and we note in the Q60T TV screen matrix only supports 60 frames per second.”


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post #157 of 168 Old 05-24-2020, 09:50 AM
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Seems like a distinction without a difference.
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post #158 of 168 Old 05-24-2020, 10:22 AM
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Quote:
Originally Posted by Spacewizard View Post
Seems like a distinction without a difference.

HDR10/HDR10+ requires 10bit color depth and 8bit + dithering (FRC) produces a 10bit color depth. In this scenario, you’re all good.

Although Samsung doesn’t support it, Dolby Vision uses 12bit color depth (although it can be 10 bit, it’s supposed to be 12bit). You can’t get to 12bit color depth with an 8bit panel. Since most panels are native 10bit, they use dithering to produce 12bit color depth for Dolby Vision (I am not aware of any native 12bit panels and the LG C9 has a 10bit panel).


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post #159 of 168 Old 05-24-2020, 01:21 PM
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Originally Posted by musicman0725 View Post
HDR10/HDR10+ requires 10bit color depth and 8bit + dithering (FRC) produces a 10bit color depth. In this scenario, you’re all good.

Although Samsung doesn’t support it, Dolby Vision uses 12bit color depth (although it can be 10 bit, it’s supposed to be 12bit). You can’t get to 12bit color depth with an 8bit panel. Since most panels are native 10bit, they use dithering to produce 12bit color depth for Dolby Vision (I am not aware of any native 12bit panels and the LG C9 has a 10bit panel).


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Thanks for explaining all that. Decided i'll not pay premium 10 bit $$$ for a 8 bit+frc panel.
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post #160 of 168 Old 05-24-2020, 03:01 PM
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I wonder if the FRC explains the issues with the gaming ghosting of the Q series. Seems like they would go together.
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post #161 of 168 Old 05-24-2020, 08:06 PM
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Originally Posted by eaadams View Post
If anyone has the 85", I am looking for the exact measurement from the top vesa hole to the top edge of the TV.
Here you all go.
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post #162 of 168 Old 05-24-2020, 08:12 PM
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EDIT: sorry, I misread the post. Please delete this.
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post #163 of 168 Old 05-24-2020, 08:14 PM
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Originally Posted by Blue Sun View Post
EDIT: sorry, I misread the post. Please delete this.
Look at the image I just posted.
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post #164 of 168 Old 05-26-2020, 04:50 AM
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Quote:
Originally Posted by Lorderl View Post
Thanks for explaining all that. Decided i'll not pay premium 10 bit $$$ for a 8 bit+frc panel.
But the Q90T has the 10-bit panel.

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Originally Posted by musicman0725 View Post
The Q90T model is produced with screen matrices of the previous 2019 series with a color depth of 10 bits without dithering.
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post #165 of 168 Old 05-26-2020, 06:18 AM
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But the Q90T has the 10-bit panel.

Correct, most information points to the Q90T having a native 10bit panel. Rtings replied to the question on their Q80T discussions about bit depth and said that they discontinued the test for panel bit depth because they couldn’t accurately test for it. In some cases the 8bit+FRC panels would out perform the native 10bit panels so now they only measure performance.


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post #166 of 168 Old 05-26-2020, 06:43 AM
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Originally Posted by musicman0725 View Post
Correct, most information points to the Q90T having a native 10bit panel. Rtings replied to the question on their Q80T discussions about bit depth and said that they discontinued the test for panel bit depth because they couldn’t accurately test for it. In some cases the 8bit+FRC panels would out perform the native 10bit panels so now they only measure performance.


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I wasn't questioning your post, but in the light of your post pointing out that the Q90T has a 10-bit panel, I was unable to understand the response from Lorderl saying he/she would "not pay premium 10 bit $$$ for a 8 bit+frc panel".
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post #167 of 168 Old 05-26-2020, 08:19 AM
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Originally Posted by VA_DaveB View Post
But the Q90T has the 10-bit panel.
I did read the part you quoted, but in the beginning of the post he mentions there is conflicting info, so that's the reason for my previous post.

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post #168 of 168 Old Yesterday, 09:25 PM
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Has anyone found a full size remote that will work with this television?

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