ViewSonic VA2455sm Apparently, this one is PWM-free, reduced blue-light and 8-bit SuperClear Pro MVA technology with true 8-bit colors and 3000:1 contrast ratio for excellent screen performance The ViewSonic VA2455Sm utilizes an 8-bit scaler to display 16.7 million true colors on-screen. 8-bit color performance enables smoother gradients and more stable color transitions, ultimately delivering stunning visuals when compared to conventional displays. Full HD 1080p for all high-definition multimedia applications ViewSonic exclusive View Mode feature includes Game, Movie, Web, Text, and Mono presets that enhance viewing experience for different scenarios Flicker-Free and Blue Light Filter technology for more comfortable viewing I guess we'll see. Never noticed this one before, got for < $100 (worth a shot) 8-bit scaler That doesn't mean 6-bit + FRC does it? 😟

Dell not working out for you, or? I want to personally aim for monitors above 1080p resolution as I've become picky after getting used to the lack of seeing pixels on my Macbook Pro LCD (2880x1800) resolution. However I would like to try out a large 4k monitor in person but there aren't many stores around Vancouver that don't have flickering lights, defeating the purpose of trying one 🙁 I'm mainly concerned about the DPI scaling. I know under OS X it's quite good but unsure of how it works under Debian.

JTL Well, I'd like to simply have a non-dithering monitor.

ViewSonic VA2455sm 24-Inch

Slacor

JTL yeah. Actually I have noticed improvements with the nvidia card (and I tested it myself today, I could see the dithering when I turned it off and on - that was satisfying)

But I also remember using the my old tube monitor and never dealing with any of this.
Unfortunately, I don't have mass cash at my disposal so 4k (while it may work) will have to wait 😉

JTL

Slacor Fair enough. Unfortunately I am waking up with headaches every day that are completely independent of screens and it's quite draining but I can use the Macbook and my desktop with the BenQ monitor without it causing additional problems.

JTL

Slacor But I also remember using the my old tube monitor and never dealing with any of this.

CRT's never used dithering and some of them had very high refresh rates. I had a CRT long ago that could do more than 120hz and it never gave me problems even after this issue started nearly 5 years ago.

It was an Viewsonic Optiquest V95 and cost more than $3000 over 15 years ago and could do nearly 2k resolution.

JTL

Slacor 8-bit scaler
That doesn't mean 6-bit + FRC does it?

Why don't you try asking them?

Slacor

Hi --,

Yes it is a true 8 bit

Our Flicker free tech nearly eliminates the flicker at all brightness levels with the LED backlighting

Regards

Hello,

I'm considering purchasing the ViewSonic VA2455sm and I need to verify two things:

SuperClear Pro technology provides true 8-bit color performance

Because it uses 8-bit, that means there is no dithering (FRC) occurring correct?
6-bit often using FRC dithering to simulate 8-bit.

Flicker-Free

Is there any brightness range that would cause PWM to occur? Or is it PWM-free through the entire range (0-100)?

Thank you!

Slacor

Ok, got it. We'll see if "True 8-bit" lives up to it's name and makes a difference over 6-bit and FRC.

Also, no PWM throughout the entire range of brightness

Loading Image

(Just noticed it was on Auto - Enabled Dithering for the ViewSonic - disabled now)

JTL

Slacor Very nice

Slacor

After using this monitor for about half a week, I have to say this is much better then my Dell U2414H.
It's semi-old tech (DVI and VGA only!) and has some ghosting, but I'm becoming nearly symptom free which is phenomenal.
We'll see how it progresses.

ThackeryBinks

Slacor Thanks for the update. I can't find any for sale on eBay or elsewhere. Mind if I ask where you purchased it and if there are any more available? Considering trying it.

Slacor

I got it here

There was a refurbished one I got very cheaply (making it easier to trial).
There's a "newer model" that is flicker free but doesn't specify whether 8 bit or 6 bit.

If you want to try the new one, I would suggest contacting them and asking them.

I'm using this monitor along with a nvidia card on linux, all of which has allowed me eliminated the usage of dithering. So it was not this monitor alone that "made everything better" is regards to dithering.

ThackeryBinks

Slacor Appreciate it. I just ordered a BenQ 8 bit / Flicker free panel suggested by JTL. If I don't have any luck I'm bookmarking this ViewSonic and will give it a run. When using a monitor such as this in combination with an Nvidia GPU, is there any setting that needs to be changed in the Nvidia control panel, or should as-is be fine?

JTL

Slacor If you want to try the new one, I would suggest contacting them and asking them.

For fun I wrote ViewSonic an email. Looks like an interesting monitor. Might get one as secondary after I purchase a 2.5k or 4k main monitor.

JTL

So the new model Slacor was talking about uses 6bit+FRC. Will attach email and datasheet later.

Hi JTL,

I grab this from the data sheet - Colors 16.7M (6bit + Hi-FRC)

I have attached it

Let me know if you have any questions.

Regards,

Jimmy Yao
Inside Sales/Sales Support
ViewSonic Corp.

This email and any attachment are intended only for use by the addressee(s) and may contain confidential information. If you receive this e-mail in error, please e-mail or call 800-888-8583 to advise the sender of a transmission error and delete the message and any attachments and any printouts

Hello

I'm just wondering if the ViewSonic VA2465smh uses a 6-bit or 8-bit color depth, and if it uses dithering/FRC technology for 8-bit.

Thanks

Datasheet: https://cdn.jtl.pw/DS_M_VA2465Smh_2015-02_EN.PDF (my site)

Slacor

ThackeryBinks There's some discussion of that here

ThackeryBinks

Slacor Thanks again. Just read that whole page. If I'm not mistaken, Windows + Nvidia + PWM free 8 Bit monitor shouldn't require any setting changes in the registry or Nvidia control panel, right? Unless we're to use the dithering.exe file in conjunction with the above formula?

JTL

ThackeryBinks The dithering exe for for Intel cards. And regardless I have ideas of something "more permanent" than an EXE for Intel Cards to control dithering/PWM

KM

ThackeryBinks we have a first report that a new NVIDIA card seems to be worse than an older one: https://ledstrain.org/d/124-gtx-1070/9

Slacor

JTL Datasheet: https://cdn.jtl.pw/DS_M_VA2465Smh_2015-02_EN.PDF (my site)

This url no longer works?

Slacor

Harrison https://ledstrain.org/d/133-viewsonic-va2455sm-24-inch

ViewSonic VA2455sm

Be careful not to get the newer model ViewSonic VA2465smh as JTL reports it's 6-bit + FRC

JTL

Slacor I took the server offline as I'm moving servers.

I still have the datasheet though.

I could bring it back up long enough for you to download it and host on ledstrain.org

JTL

Slacor Check LED Strain support email.