42" OLED MASTER THREAD

Vega

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Ya I still don't get how simply making it bendable increases price by 3x over 42C2. Maybe if they made it 175 Hz or something it would be worth it.
 

ND40oz

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Ya I still don't get how simply making it bendable increases price by 3x over 42C2. Maybe if they made it 175 Hz or something it would be worth it.

It's got some sort of motor that bends it for you and they had to update the remote to support it. But yeah, even at 2.5x the price it's a hard sell. It does have a few additional things like a built in mic, Dolby Atmos support, adjustable stand and some LEDs to try and set it apart but at most that's worth a few hundred extra.
 

Happy Hopping

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Ya I still don't get how simply making it bendable increases price by 3x over 42C2. Maybe if they made it 175 Hz or something it would be worth it.
they have something that noone else have. They then jack up at any price they want. The airlines does that for decades. There is a report from places like BBC talks about 2 competing airlines, same source and target location, same price. But the other airline has another route from same source to a neighbor city (very near the other target location), but several times the price, because they are the only one that has that route
 
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Superino

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Guys according to you what could it be that with oled C2 as a resolution I can only put in PC mode 2560x1440 120hz, I use the same settings as the C1, I updated the firmware, changed the hdmi cable, reset the tv, but if I reconnect C1 I can safely put 3840x2160 120hz video card 2080ti in your opinion and the tv to be replaced?
 

DooLocsta

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Guys according to you what could it be that with oled C2 as a resolution I can only put in PC mode 2560x1440 120hz, I use the same settings as the C1, I updated the firmware, changed the hdmi cable, reset the tv, but if I reconnect C1 I can safely put 3840x2160 120hz video card 2080ti in your opinion and the tv to be replaced?
2080ti over HDMI you are only going to get 4K 60Hz at 4K. Limitation of the HDMI spec on the card
 

Superino

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2080ti over HDMI you are only going to get 4K 60Hz at 4K. Limitation of the HDMI spec on the card
forgive my english i use google translate.

the strange thing that using oled C1 with the 2080 I can get you 3840x2160 120hz with its limits. Both with hdmi 2.0 and 2.1 cable

using Oled C2 I can only put 2560x1440 120hz.
 

DooLocsta

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forgive my english i use google translate.

the strange thing that using oled C1 with the 2080 I can get you 3840x2160 120hz with its limits. Both with hdmi 2.0 and 2.1 cable

using Oled C2 I can only put 2560x1440 120hz.
Do you have shot running 120hz on the C1 at 4K. It isn't possible on a 2080Ti with the HDMI spec unless it is running 4:2:2 I think?
 

Superino

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Do you have shot running 120hz on the C1 at 4K. It isn't possible on a 2080Ti with the HDMI spec unless it is running 4:2:2 I think?
Do you have shot running 120hz on the C1 at 4K. It isn't possible on a 2080Ti with the HDMI spec unless it is running 4:2:2 I think?
I was limited, I would not want oled C2 to have any defects
 

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kasakka

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forgive my english i use google translate.

the strange thing that using oled C1 with the 2080 I can get you 3840x2160 120hz with its limits. Both with hdmi 2.0 and 2.1 cable

using Oled C2 I can only put 2560x1440 120hz.
You can have 4K 120 Hz if you set it to 8 bit color, 4:2:0 chroma subsampling and turn off HDR.
Otherwise upgrade GPU or buy a DP to HDMI 2.1 adapter.
 

Superino

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made 4.2.2 8 bit na on the C2 I always 2560x1440 120hz
if I connect C1 I can also select the 4k at 120hz with its limits
 

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Superino

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here is Oled C1
I came to the conclusion that C1 can be used 4.2.0
in C2 there is only 4.2.2
isn't there a way to enable it?
 

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KickAssCop

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Is 42 inch really a reasonable size to play FPS games at? I play COD MW2 and Dying Light 2 these days and worry that sitting close (like 50 cm away from tv) will give me bad headaches. Any advice?

I can’t add a 100 CM depth desk due to space and currently game on a 32 inch 240 Hz monitor which I love but is 1440P.
 

rinaldo00

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they have something that noone else have. They then jack up at any price they want. The airlines does that for decades. There is a report from places like BBC talks about 2 competing airlines, same source and target location, same price. But the other airline has another route from same source to a neighbor city (very near the other target location), but several times the price, because they are the only one that has that route
Well, there is this
The Corsair Xeneon Flex
 

Happy Hopping

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since the Corsair SSD failure incident in which people got their SSD and mysteriously their PC can no longer see their Corsair SSD, and Corsair solution is NOT to answer phone and email and leave everyone hanging, I no longer touch that brand due to their devine leadership in management
 

Murzilka

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Is 42 inch really a reasonable size to play FPS games at? I play COD MW2 and Dying Light 2 these days and worry that sitting close (like 50 cm away from tv) will give me bad headaches. Any advice?

I can’t add a 100 CM depth desk due to space and currently game on a 32 inch 240 Hz monitor which I love but is 1440P.
50 cm is too close. I wouldn't be able to use the display in such close range. 80cm is the minimum, imo.
 

kasakka

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Is 42 inch really a reasonable size to play FPS games at? I play COD MW2 and Dying Light 2 these days and worry that sitting close (like 50 cm away from tv) will give me bad headaches. Any advice?

I can’t add a 100 CM depth desk due to space and currently game on a 32 inch 240 Hz monitor which I love but is 1440P.
The 42" is not for you. IMO it needs 80-100 cm viewing distance. You could use the "shrink screen" feature to shrink it to a 27" screen but then why not just get a 32" 4K screen like the Neo G7/G8 instead or wait until next year for maybe more options?
 
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Lateralus

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50 cm is too close. I wouldn't be able to use the display in such close range. 80cm is the minimum, imo.
I just measured 50cm and agree. Wow, that's close! That seems too close to sit to any screen, lol.
 

fbanget

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The 42" is not for you. IMO it needs 80-100 cm viewing distance. You could use the "shrink screen" feature to shrink it to a 27" screen but then why not just get a 32" 4K screen like the Neo G7/G8 instead or wait until next year for maybe more options?
Yeah, this is too close. I have a 80cm deep desk and it feels perfect on it (probably making it look like a 32 inch at 50cm)
 
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repoman0

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Anyone else ever get weird colors after turning the TV back on while the PC is running? Almost looks like blue isn't being output. Home screen and built in TV stuff is unaffected, and it goes away turning the TV off and back on.

I suspect Nvidia drivers or hardware more than the TV itself (using the latest 526.xx on my 3080).
 

Nenu

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Anyone else ever get weird colors after turning the TV back on while the PC is running? Almost looks like blue isn't being output. Home screen and built in TV stuff is unaffected, and it goes away turning the TV off and back on.

I suspect Nvidia drivers or hardware more than the TV itself (using the latest 526.xx on my 3080).
Looks like a problem with the TV on 2 counts
1) No one has reported this issue with a gfx card on any display.
2) When you restart the TV its fixed.
 

kasakka

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From using the LTT resolution/bandwidth calculator I linked - These uw resolutions look like they'd be nice to run on a 16:9 4k or 8k screenif they upped the Hz on oled tvs, even at 4k upscaled to 8k being sent as an 8k signal as far as the display would be concerned. They fit within HDMI 2.1's bandwidth, at least when using DSC 3:1 compression ratio. DP 2.0 would be nice but realistically I'd prob stick with a TV model than paying up to triple+ in some cases for a comparable desktop gaming monitor version to get dp2.0 someday and potentially end up suffering AG coating to boot which would really bother me, especially on an OLED.

8k at 32:10 ultrawide 7680 × 2400 rez @ 200Hz, 10bit signal at 3:1 compression: 41.03 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

8k at 24:10 ultrawide 7680 × 3200 rez @ 150Hz, 10bit signal at 3:1 compression: 40.02 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

4k at 24:10 ultrawide 3840 × 1600 rez @ 500Hz, 10bit
signal at 3:1 compression: 40.73 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

My biggest concern is if companies will actually support DSC. So far I think the only case where I have seen HDMI 2.1 DSC implemented is those 24 Gbps ports on the Gigabyte M28U/M32U. I could also find no info about what effect increased compression ratios for DSC might have.

Display manufacturers are often a bit iffy on how they support ultrawide aspect ratios. Samsung seems to favor a toggle in the OSD to turn the display effectively into an ultrawide rather than just exposing that resolution in the EDID. For the above to work well the display would have to handle receiving and scaling the ultrawide resolution because if the GPU does it, then it will output at 8K 16:9 and the refresh rate limitations of that.

Looking at LTT bandwidth calculator, for 8K 16:9 even with DSC 3x compression ratio HDMI 2.1 tops out at 118 Hz for 10-bit color. For comparison DP 2.0 would stretch up to 208 Hz.
 

fbanget

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I had something weird happened with my LG C2 this morning. When I opened it it produced a loud musical tone that sounded like these old 8-bit video games! A bit like Samsung TVs out of the box (at least in the year 2010 they were like this) . Has this ever happened to you guys? (note: the TV Power Sound is off in the accessibilty setting). Honestly I'm not 100% sure it was the TV. Might have been my laptop but it's the first time either of these would have made since I got them (and I own the laptop since 2017)
 
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elvn

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My biggest concern is if companies will actually support DSC. So far I think the only case where I have seen HDMI 2.1 DSC implemented is those 24 Gbps ports on the Gigabyte M28U/M32U. I could also find no info about what effect increased compression ratios for DSC might have.

Display manufacturers are often a bit iffy on how they support ultrawide aspect ratios. Samsung seems to favor a toggle in the OSD to turn the display effectively into an ultrawide rather than just exposing that resolution in the EDID. For the above to work well the display would have to handle receiving and scaling the ultrawide resolution because if the GPU does it, then it will output at 8K 16:9 and the refresh rate limitations of that.

Looking at LTT bandwidth calculator, for 8K 16:9 even with DSC 3x compression ratio HDMI 2.1 tops out at 118 Hz for 10-bit color. For comparison DP 2.0 would stretch up to 208 Hz.


Yep. Id be happy with thise kinds of ultrawide resolutions that say a large 55inch 1000R 8k screen would be capable of though. Theoretically we might at some point get some gaming upscaling tech in the display end of the pipeline to avoid the bottleneck, sending 4k over the ports and cable to be (AI?) upscaled to 8k on the display itself. At least I hope so.

Here is the full scroll from a few days ago:


Useful reference:

https://linustechtips.com/topic/729...ssion=dsc2.0x&calculations=show&formulas=show

Max. Data Rate Reference Table:
  • DisplayPort 2.0 77.37 Gbit/s
  • DisplayPort 1.3–1.4 25.92 Gbit/s
  • DisplayPort 1.2 17.28 Gbit/s
  • DisplayPort 1.0–1.1 8.64 Gbit/s
  • HDMI 2.1 41.92 Gbit/s
  • HDMI 2.0 14.40 Gbit/s
  • HDMI 1.3–1.4 8.16 Gbit/s
  • HDMI 1.0–1.2 3.96 Gbit/s
  • DVI 7.92 Gbit/s
  • Thunderbolt 3 34.56 Gbit/s
  • Thunderbolt 2 17.28 Gbit/s
  • Thunderbolt 8.64 Gbit/s

According to that calculator, I calculated a bunch of these below to get a general idea of limitations:


. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4k 240hz 10 bit DSC 2:1 = 40.61 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

4k 240hz 12 bit DSC 2:1 = 48.75 Gbit/s

. . . .

4k 240hz 12 bit DSC 3:1 = 32.49 Gbit/s

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4k 400Hz 10bit DSC 3:1 = 41.52 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

Video Format:
3840 × 2160 (16∶9 ratio) at 400 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format

Data Rate Required: 41.52 Gbit/s


. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4k 470Hz 10bit DSC 2:1 = 76.82 Gbit/s (DP 2.0 ~> 77.37 Gbit/s) (HDMI 2.1 ~> 41.92 Gbit/s)

Video Format:
3840 × 2160 (16∶9 ratio) at 470 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (2.0× ratio)
CVT-R2 timing format

Data Rate Required: 76.16 Gbit/s

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4k 640Hz 10bit DSC 3:1 = 76.82 Gbit/s (DP 2.0 ~> 77.37 Gbit/s) (HDMI 2.1 ~> 41.92 Gbit/s)

Data Rate Required: 76.82 Gbit/s

Video Format:
3840 × 2160 (16∶9 ratio) at 640 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8K

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8k 240Hz 10bit signal (even upscaled from 4k on the pc end to 8k) at 3:1 compression: 107.20 Gbit/s (out of range of even dp 2.0)

Video Format:
7680 × 5120 (3∶2 ratio) at 240 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format

Data Rate Required: 107.20 Gbit/s 8k 240 Hz (DP 2.0 ~> 77.37 Gbit/s)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8k 165Hz 10bit signal (even upscaled from 4k on the pc end to 8k) at 3:1 compression: 70.95 Gbit/s (DP 2.0 ~> 77.37 Gbit/s)

Video Format:
7680 × 5120 (3∶2 ratio) at 165 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)

Data Rate Required: 70.95 Gbit/s 8k 165 Hz (DP 2.0 ~> 77.37 Gbit/s)


. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8k 175Hz 10bit signal (even upscaled from 4k on the pc end to 8k) at 3:1 compression: 75.63 Gbit/s (DP 2.0 ~> 77.37 Gbit/s)

Video Format:
7680 × 5120 (3∶2 ratio) at 175 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format


Data Rate Required: 75.63 Gbit/s (DP 2.0 ~> 77.37 Gbit/s)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8k 100Hz 10bit signal (even upscaled from 4k on the pc end to 8k) at 3:1 compression: 41.65 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

Video Format:
7680 × 5120 (3∶2 ratio) at 100 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format

Data Rate Required: 41.65 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)



. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ultrawide

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



8k at 32:10 ultrawide rez 200Hz, 10bit signal at 3:1 compression: 41.03 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

Video Format:
7680 × 2400 (16∶5 ratio) at 200 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format

Data Rate Required: 41.03 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)


. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8k at 32:10 ultrawide rez 345Hz, 10bit signal at 3:1 compression: 76.38 Gbit/s (DP 2.0 ~> 77.37 Gbit/s)

Data Rate Required: 76.38 Gbit/s

Video Format:
7680 × 2400 (16∶5 ratio) at 345 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format


Data Rate Required: 76.38 Gbit/s 76.38 Gbit/s


. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8k at 24:10 ultrawide rez 150Hz, 10bit signal at 3:1 compression: 40.02 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

Video Format:
7680 × 3200 (12∶5 ratio) at 150 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format

Data Rate Required: 40.02 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)


. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8k at 24:10 ultrawide rez 270Hz, 10bit signal at 3:1 compression: 76.56 Gbit/s (DP 2.0 ~> 77.37 Gbit/s)

Video Format:
7680 × 3200 (12∶5 ratio) at 270 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format


Data Rate Required: 76.56 Gbit/s (DP 2.0 ~> 77.37 Gbit/s)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4k at 24:10 ultrawide rez 500Hz, 10bit signal at 3:1 compression: 40.73 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

Video Format:
3840 × 1600 (12∶5 ratio) at 500 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format


Data Rate Required: 40.73 Gbit/s (HDMI 2.1 ~> 41.92 Gbit/s)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4k at 24:10 ultrawide rez 780Hz, 10bit signal at 3:1 compression: 76.32 Gbit/s (DP 2.0 ~> 77.37 Gbit/s)

Video Format:
3840 × 1600 (12∶5 ratio) at 780 Hz
10 bpc (30 bit/px) RGB color
Display Stream Compression (3.0× ratio)
CVT-R2 timing format

Data Rate Required: 76.32 Gbit/s (DP 2.0 ~> 77.37 Gbit/s)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 

Happy Hopping

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Max. Data Rate Reference Table:

  • DisplayPort 2.0 77.37 Gbit/s
  • DisplayPort 1.3–1.4 25.92 Gbit/s
  • DisplayPort 1.2 17.28 Gbit/s
  • DisplayPort 1.0–1.1 8.64 Gbit/s
  • HDMI 2.1 41.92 Gbit/s
  • HDMI 2.0 14.40 Gbit/s
  • HDMI 1.3–1.4 8.16 Gbit/s
  • HDMI 1.0–1.2 3.96 Gbit/s
  • DVI 7.92 Gbit/s
  • Thunderbolt 3 34.56 Gbit/s
  • Thunderbolt 2 17.28 Gbit/s
  • Thunderbolt 8.64 Gbit/s

but what's the max. allow by the Asus on Display port? does it really support 77.37 Gbit/s? and what's the max. allowable on today's half decent video card?
 

noko

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Is 42 inch really a reasonable size to play FPS games at? I play COD MW2 and Dying Light 2 these days and worry that sitting close (like 50 cm away from tv) will give me bad headaches. Any advice?

I can’t add a 100 CM depth desk due to space and currently game on a 32 inch 240 Hz monitor which I love but is 1440P.
Game at 110cm (43"), C2 42" -> utterly fantastic if you are in to high quality pixels. At 50cm it would definitely be too close for me, had that problem with the 50" Sony X90J where it was just too big for most things except games, one could get use to it. C2 on the 3090 everything works, 10bit, HDR, 120hz, GSync . . . With the fastest pixel response time I've seen that blows VA panels away. I have a 1440p 144hz monitor which use to look amazing compared to my other monitors, now, well it looks like crap and even my Sony 120hz 50" looks anemic compared to the C2. Anyways the C2 turned out better than I expected.
 

kasakka

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but what's the max. allow by the Asus on Display port? does it really support 77.37 Gbit/s? and what's the max. allowable on today's half decent video card?
There are no DP 2.x displays on the market yet. First ones coming next year. Whether we will see OLEDs in that group is unknown.

ASUS PG42UQ supports max 138 Hz refresh rate at 10-bit color over both DP 1.4 and HDMI 2.1. This seems to be a limitation of the panel or its controller.

Nvidia 30 and 40 series GPUs support DP 1.4 and HDMI 2.1. 20 series supports DP 1.4 and HDMI 2.0
AMD 7000 series GPUs support DP 2.1 and HDMI 2.1. 6000 series supports DP 1.4 and HDMI 2.1. 5000 series DP 1.4 and HDMI 2.0.
 

repoman0

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Looks like a problem with the TV on 2 counts
1) No one has reported this issue with a gfx card on any display.
2) When you restart the TV its fixed.

Nah, looks like it was nvidia drivers. Seems to be fixed after updating to the latest and doesn’t happen in Linux.
 

elvn

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Is 42 inch really a reasonable size to play FPS games at? I play COD MW2 and Dying Light 2 these days and worry that sitting close (like 50 cm away from tv) will give me bad headaches. Any advice?

I can’t add a 100 CM depth desk due to space and currently game on a 32 inch 240 Hz monitor which I love but is 1440P.

. . .

Game at 110cm (43"), C2 42" -> utterly fantastic if you are in to high quality pixels. At 50cm it would definitely be too close for me, had that problem with the 50" Sony X90J where it was just too big for most things except games, one could get use to it. C2 on the 3090 everything works, 10bit, HDR, 120hz, GSync . . . With the fastest pixel response time I've seen that blows VA panels away. I have a 1440p 144hz monitor which use to look amazing compared to my other monitors, now, well it looks like crap and even my Sony 120hz 50" looks anemic compared to the C2. Anyways the C2 turned out better than I expected.

. . .

50cm = ~ 20 inches which is a really poor view distance for larger screens imo. I would rule that out entirely myself.

Somewhere around the ~65 PPD to 80 PPD point is optimal on a 4k without shrinking or growing the screen too much to perspective and while keeping it in your binocular+focal human viewpoint. We can benefit from much higher PPD though. We'd need like 150PPD or more before we could get away from having to mask poor PPD using text sub-sampling and graphics Anti-Aliasing.

Text sub-sampling and AA in DX/game engines start to compensate enough at around 60 PPD . . . which is ~29" view on a 42" 4k, 33.5" view on a 48" 4k, both at 64 deg viewing angle. Note that while text-ss heavily massaged and perhaps using alt text subsampling methods are able to compensate enough here (WOLED subpixels prob benefit from a little farther than 60PPD point though), and AA in games can compensate enough at 60PPD - there is no AA on the 2D desktop itself outside of text-ss so desktop graphics and imagery typically remain uncompensated and more pixelated.


. . . . . . . . .

60 to 80 PPD ranges on 4k screens
================================



42" 4k flat: 64deg viewing angle = 29" view distance = 60 PPD

42" 4k flat: 55deg viewing angle = 35" view distance = 70 PPD

42" 4k flat: 48 deg viewing angle = ~ 41" view distance = 80 PPD <----- view distance makes an equilateral triangle pyramid/cone viewing angle with the screen surface as the base of the pyramid, so you can see the bulk of the screen surface better

. .

48" 4k flat: 64 deg viewing angle = 33.5" view distance = 60 PPD

48" 4k flat: 55 deg viewing angle = ~ 40" view distance = 70 PPD

48" 4k flat: 48 deg viewing angle = 47" view distance = 80 PPD <----- view distance makes an equilateral triangle pyramid/cone viewing angle with the screen surface as the base of the pyramid, so you can see the bulk of the screen surface better

. . . . . .

Human binocular field and color vision discrimination is within 50 deg to 60 deg.
===================================================================



42" 16:9 screen = somewhere in between 39" view distance at 50deg (77 PPD) and ~32" view at 60 deg (64 PPD)

48" 16:9 screen = somewhere in between 45" view distance at 50deg (77 PPD) and ~36" view at 60 deg (64 PPD)

(*rough numbers, screen sizes are actually slightly smaller than 42" and 48")


759311_VcjhpLn.png


. . .

"Eye fatigue zone" and Screen non-uniformity "gradient" zone
====================================================


When you sit closer than 50 - 60 deg viewing angle, you push the extents of the screen outside of that "binocular field" more and more. This causes a larger and larger "eye fatigue zone" the closer you sit, and on OLED and VA screens this exacerbates the screen shift/darkening or color shift/screen non-uniformity "gradient" issue on the sides making it larger and larger in the same way. This while at the same time lowering your PPD below where text-ss and AA can mask it enough (on a 4k screen, 8k would have double the 4k PPD at any given distance).

strain.jpg


Solid blue is when sitting at 1000R curve's "focal point" or radius. 1000R = 1000mm = ~ 39.5". When viewed from the focal point, all points on the screen surface are equidistant from your eyeballs.

759295_q03mqmG.png


759337_R9-1200x600ResponsivePreset.jpg


. . . . .

Is 42 inch really a reasonable size <.....> worry that sitting close (like 50 cm away from tv) will give me bad headaches. Any advice?

I can’t add a 100 CM depth desk due to space and currently game on a 32 inch 240 Hz monitor which I love but is 1440P.


Personally I'd just buy a slim spine TV stand, the kind with a flat floor foot or caster wheels. Then just move your desk back enough from the screen since the screen would be completely decoupled from the desk at that point (other than cable umbilical cord). You don't need a gigantic desk, you just need to separate the screen from the desk, assuming you have the room space.

In the same vein you could alternately put the stand in the room and put your back to the wall facing the desk out from a wall or corner, doing some cable management (mayvbe even some cable tubing/boxing conduit, anti trip strip, etc. or something) so there's not a rain of cable vines facing the room. :)
 
Last edited:

noko

Supreme [H]ardness
Joined
Apr 14, 2010
Messages
7,037
. . .



. . .

50cm = ~ 20 inches which is a really poor view distance for larger screens imo. I would rule that out entirely myself.

Somewhere around the ~65 PPD to 80 PPD point is optimal on a 4k without shrinking or growing the screen too much to perspective and while keeping it in your binocular+focal human viewpoint. We can benefit from much higher PPD though. We'd need like 150PPD or more before we could get away from having to mask poor PPD using text sub-sampling and graphics Anti-Aliasing.

Text sub-sampling and AA in DX/game engines start to compensate enough at around 60 PPD . . . which is ~29" view on a 42" 4k, 33.5" view on a 48" 4k, both at 64 deg viewing angle. Note that while text-ss heavily massaged and perhaps using alt text subsampling methods are able to compensate enough here (WOLED subpixels prob benefit from a little farther than 60PPD point though), and AA in games can compensate enough at 60PPD - there is no AA on the 2D desktop itself outside of text-ss so desktop graphics and imagery typically remain uncompensated and more pixelated.


. . . . . . . . .

60 to 80 PPD ranges on 4k screens
================================



42" 4k flat: 64deg viewing angle = 29" view distance = 60 PPD

42" 4k flat: 55deg viewing angle = 35" view distance = 70 PPD

42" 4k flat: 48 deg viewing angle = ~ 41" view distance = 80 PPD <----- view distance makes an equilateral triangle pyramid/cone viewing angle with the screen surface as the base of the pyramid, so you can see the bulk of the screen surface better

. .

48" 4k flat: 64 deg viewing angle = 33.5" view distance = 60 PPD

48" 4k flat: 55 deg viewing angle = ~ 40" view distance = 70 PPD

48" 4k flat: 48 deg viewing angle = 47" view distance = 80 PPD <----- view distance makes an equilateral triangle pyramid/cone viewing angle with the screen surface as the base of the pyramid, so you can see the bulk of the screen surface better

. . . . . .

Human binocular field and color vision discrimination is within 50 deg to 60 deg.
===================================================================



42" 16:9 screen = somewhere in between 39" view distance at 50deg (77 PPD) and ~32" view at 60 deg (64 PPD)

48" 16:9 screen = somewhere in between 45" view distance at 50deg (77 PPD) and ~36" view at 60 deg (64 PPD)

(*rough numbers, screen sizes are actually slightly smaller than 42" and 48")


759311_VcjhpLn.png


. . .

"Eye fatigue zone" and Screen non-uniformity "gradient" zone
====================================================


When you sit closer than 50 - 60 deg viewing angle, you push the extents of the screen outside of that "binocular field" more and more. This causes a larger and larger "eye fatigue zone" the closer you sit, and on OLED and VA screens this exacerbates the screen shift/darkening or color shift/screen non-uniformity "gradient" issue on the sides making it larger and larger in the same way. This while at the same time lowering your PPD below where text-ss and AA can mask it enough (on a 4k screen, 8k would have double the 4k PPD at any given distance).

View attachment 526246

Solid blue is when sitting at 1000R curve's "focal point" or radius. 1000R = 1000mm = ~ 39.5". When viewed from the focal point, all points on the screen surface are equidistant from your eyeballs.

759295_q03mqmG.png


759337_R9-1200x600ResponsivePreset.jpg


. . . . .




Personally I'd just buy a slim spine TV stand, the kind with a flat floor foot or caster wheels. Then just move your desk back enough from the screen since the screen would be completely decoupled from the desk at that point (other than cable umbilical cord). You don't need a gigantic desk, you just need to separate the screen from the desk, assuming you have the room space.

In the same vein you could alternately put the stand in the room and put your back to the wall facing the desk out from a wall or corner, doing some cable management (mayvbe even some cable tubing/boxing conduit, anti trip strip, etc. or something) so there's not a rain of cable vines facing the room. :)
My reason for my distance is eyesight is sharp and in focus :D
 

ssj3rd

Limp Gawd
Joined
Aug 30, 2021
Messages
174
It’s bad enough with the current gpu prices over the roof, good to see something actually gets cheaper for a change 👍
 
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