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LightBoost, G-SYNC, Turbo240: 120Hz Strobe Backlight LCDs / No Motion Blur! - Page 111

post #1101 of 2929
Thread Starter 
Quote:
Originally Posted by Robilar View Post

A question though, why is my Asus monitor advertised as lightboost ready and yet requires a multi step hack process to enable the feature? The word ready implies plug and go to me...
That's because LightBoost was primarily designed for 3D Vision.
nVidia force-bundled the motion blur elimination ability of LightBoost, with 3D Vision, even though nVidia already knew it does eliminate motion blur (cite: Anandtech fall 2011 article). Not as many people cared as not everyone wanted 3D. The strobe backlight serves multiple purposes -- elimination of crosstalk between eyes and brighter 3D image through glasses because the backlight flashes are sync'd with shutter glasses. (cite: Anandtech, HardwareCanucks, etc). It also happens to conveniently eliminate motion blur -- even for 2D -- something that apparently interests more people than people interested in 3D glasses.

If you have 3D Vision Kit -- Lightboost is easy to enable.

If you do not have 3D Vision Kit -- Lightboost is hard to enable.

(It was only about six months ago that a hack was discovered, to make it possible to finally enable LightBoost without buying 3D glasses. That finally made LightBoost more popular for motion blur elimination)
Quote:
Which would be the better option, the ASUS VG278HE or the ASUS VG278H?
The VG278HE is cheaper, while the VG278H has reported better picture (Comparison of VG278H and VG278H by hazmatm). Two other reports confirmed this. Also, the BENQ XL2720T reportedly has good LightBoost color quality with new 3D Vision drivers. The bonus is VG278H includes 3D Vision glasses, so you can use 3D from time to time, if that interests you. VG278H has a builtin emitter, so it's conveniently one of the easiest monitors to enable LightBoost in.
Edited by mdrejhon - 6/7/13 at 3:41pm
post #1102 of 2929
Thread Starter 
I'd like to quote a post I made on HardForum, comparing the various different LightBoost monitors, based on known forum-posted information throughout multiple forums:
Quote:
Originally Posted by Mark Rejhon 
(Approximate information, based on at least 3 independent forum user reports. Manufacturers tinker with the monitors all the time, so revisions may produce different results. e.g. the new VG278HR revision of the VG278H monitor.).

ASUS VG278H 27"
+ Better-than-average LightBoost color
+ Easier to enable LightBoost, due to builtin emitter
+ Can exceeds 700:1 contrast ratio in LightBoost (when recalibrated after setting Contrast OSD=75% or 80%)
- LightBoost artifacting (corsstalk) becomes bad if you raise Contrast to 90% instead of 65%. (nearly invisible ghosting at 65% though)

ASUS VG278HE 27"
- This may not be consistent on all VG278HE's but some of them reportedly had a more amplified LCD inversion artifact (pixel checkerboard artifact similiar to this), and hazmatm compared VG278H vs VG278HE and 3 others concurred.
- This is the display reviewed by TFTCentral's Motion Blur Reduction Backlights Article.

ASUS VG248QE 24"
+ Clearer than average LightBoost (lack of crosstalk, lack of faint ghost double-image aftifact) -- no ghosting, no overdrive artifacts, no trailing, nothing at all
+ Best CRT effect according to many (e.g. Vega)
- Poor color. Lower contrast ratio, about 500:1 (reportedly as low as 250:1 with buggy new 320.18+ drivers)
- Occasionally a very faint scanlines effect at the upper-right corner (some samples)

BENQ XL2411T 24"
... Similiar to VG248QE. It uses the same panel as VG248QE.

BENQ XL2420T 24"
+ Very good color for a LightBoost monitor.
- Poor LightBoost trailing artifacts; I've heard a few reports of LCD inversion artifacts (pixel checkerboard artifact, similiar to this). This is a different/older panel than the XL2411T

BENQ XL2720T 27"
+ Very good color for a LightBoost monitor with newest drivers (320.18+)
+ Reportedly can approach nearly 1000:1 contrast ratio in LightBoost
- Poor color with older drivers
- Slight dark ghosting effect during LightBoost, but not too strong

Some monitor samples can unexpectedly have worse attributes (e.g. more LCD inversion artifact -- checkerboard artifact -- than others). For example, while my XL2411T does not have a noticeable LightBoost checkerboard artifact, one person reported theirs had a noticeable version of this artifact. Eventually someone needs to obtain all LightBoost monitors and execute the Great LightBoost Comparison Test. Also, I am creating a new LightBoost FAQ page on Blur Busters (e.g. answers common LightBoost questions with known answers), as a supplement, it should be published within the next two weeks.

Also within the same LightBoost monitor, via monitor menus:
- For a brighter image, increase LightBoost %
- For a dimmer image (but clearer motion), decrease LightBoost %
- For less checkerboard artifact, decrease Contrast %
- For less LightBoost trailing artifacts, decrease Contrast % on monitor to 65%
- For less gamma bleaching effect, decrease Contrast % on monitor to 65%
- For maximum color gamut (when recalibrating with a Spyder4 or i1 Pro), increase Contrast % to 90% before beginning colorimeter calibration. Better colors and contrast will occur, but you will get somewhat worse LightBoost trailing artifacts. In certain cases, it is possible to approach 1000:1 contrast ratio with LightBoost on some of the better 27" models.
...Bottom line, you will be wanting to choose a compromise picture setting based on preferences.

Best Color -- If you want a color/contrast champion for LightBoost, the VG278H and XL2720T is probably your best bet.
Minimum Artifacts -- If you want a fast-responding panel with very clean CRT effect (minimum possible LightBoost artifacts) or minimum possible 3D crosstalk, the VG248QE and XL2411T is your best bet.
There's also the LightBoost HOWTO which is updated on an ongoing basis.
post #1103 of 2929
For those with color issues.

I have a Color Calibrator that im going to loan out.

I used this with my ASUS VG248QE Monitors. As you can see the colors are very washed out but once calibrated they are quite respectful. (middle monitor has been calibrated)

Check this thread for further details.
http://www.overclock.net/t/1397938/my-spyder4elite-monitor-calibrator-loan-thread


post #1104 of 2929
Do you know which driver version has the best color? 296.10 is passable, but I get weird banding on blacks and greys, as well as a weird bug where there's an alternating pattern of bright and dark pixels down the screen.

Here's an example of what it would look like zoomed in.
post #1105 of 2929
Thread Starter 
Quote:
Originally Posted by Art Vanelay View Post

Do you know which driver version has the best color? 296.10 is passable, but I get weird banding on blacks and greys, as well as a weird bug where there's an alternating pattern of bright and dark pixels down the screen.
With or without LightBoost?
Also, does it look anything similiar to a checkerboard pixel pattern, like this?
Is it more intense in some parts of the screen than others (e.g. only at the upper-right corner)?
Does it only occur at some referesh rates?

It may be a monitor specific artifact.
Some VG248QE's have exhibited a scanlines issue on some parts of the screen, such as the upper-right corner, and only at certain refresh rates such as 120Hz. Some VG278HE's have exibited the checkerboard pixel pattern (amplified LCD inversion artifact).
post #1106 of 2929
Quote:
Originally Posted by mdrejhon View Post

With or without LightBoost?
Also, does it look anything similiar to a checkerboard pixel pattern, like this?
Is it more intense in some parts of the screen than others (e.g. only at the upper-right corner)?
Does it only occur at some referesh rates?

It may be a monitor specific artifact.
Some VG248QE's have exhibited a scanlines issue on some parts of the screen, such as the upper-right corner, and only at certain refresh rates such as 120Hz. Some VG278HE's have exibited the checkerboard pixel pattern (amplified LCD inversion artifact).
It's nothing like that checkerboard artifact. This is uniform throughout the screen, and at all 3 refresh rates.

It's not really bothering me, but the black and gray problem is annoying me. I have noticed that in things like the buy menu in CS:GO, the gradients have sudden steps in color, and they step to strange brown and burgundy colors. Also, sometimes black or dark colors don't seem uniform, there are random millimeter in radius dark and light patches throughout them.
post #1107 of 2929
Thread Starter 
Quote:
Originally Posted by Art Vanelay View Post

It's not really bothering me, but the black and gray problem is annoying me. I have noticed that in things like the buy menu in CS:GO, the gradients have sudden steps in color, and they step to strange brown and burgundy colors. Also, sometimes black or dark colors don't seem uniform, there are random millimeter in radius dark and light patches throughout them.
This stumps me - perhaps this is an issue with the VG248QE. The gradients *might* be explained via the reduced color gamut (e.g. 6bit TN panel and 8bit dithering), check out the Lagom LCD patterns. But the other artifacts stumps me, as neither my VG278H nor XL2411T has them.
post #1108 of 2929
Thread Starter 
UPDATE...

There is a new LightBoost FAQ covering common questions and answers.
Quote:
General

Q: What, exactly, is LightBoost?
Q: What are the pros/cons of LightBoost?
Q: Easiest way to enable LightBoost?
Q: Which monitors supports LightBoost?
Q: Should I use VSYNC ON or VSYNC OFF?
Q: How do I change the LightBoost percentage?
Q: What is the difference between LightBoost 10%, 50% and 100%?
Q: What is the advantage of LightBoost 10%?
Q: How do I turn quickly turn on/off LightBoost?
Q: How do I turn permanently off LightBoost?

Picture

Q: I thought “LightBoost” boosts picture brightness? Why is it not bright?
Q: My picture is too dark!
Q: My picture is too bright!
Q: My colors are washed out!
Q: My color is too purple!
Q: My monitor adjustments are locked! How do I adjust color?
Q: The 144Hz setting is missing! How to fix?

Fluidity

Q: My games are capped at 60fps! How to fix?
Q: What GPU do I need for LightBoost?
Q: I can only do 80 fps! Will LightBoost still benefit me?
Q: Why does LightBoost look better with VSYNC ON?
Q: How can I make LightBoost smoother with VSYNC OFF?
Q: How can I reduce input lag with LightBoost?

Vision

Q: Why does LightBoost have MORE eyestrain?
Q: Why does LightBoost have LESS eyestrain?
Q: Can I get used to LightBoost?
Q: LightBoost doesn’t eliminate motion blur for me. Why?

Technical

Q: Why is LightBoost so difficult to enable? nVidia vendor lock-in?
Q: How does LightBoost eliminate motion blur?
Q: Why do I need 120fps @ 120Hz for LightBoost?
Q: Why does it look good at fps=Hz? (frame rate matching refresh rate)
Q: Why doesn’t LightBoost work at 144Hz?
Q: Why is 120Hz LightBoost better than 144Hz?
Q: Does LightBoost shorten the life of the monitor's backlight?
Q: How is LightBoost different from PWM?

Advanced Picture Improvement

Q: How do I calibrate my picture?
Q: My games doesn’t use my desktop calibration! How to fix?
Q: How do I make Borderlands 2 more colorful looking?
Q: Can Spyder4 or i1 Display Pro improve LightBoost color?
Q: How to calibrate for better color and maximum contrast?
Q: How to calibrate for minimum motion artifacts?

Edited by mdrejhon - 6/10/13 at 7:48pm
post #1109 of 2929
nice FAQ thumb.gif

Only thing I would add is something about the Nvidia -> AMD process
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post #1110 of 2929
Thread Starter 
Quote:
Originally Posted by jderbs View Post

nice FAQ thumb.gif

Only thing I would add is something about the Nvidia -> AMD process
It's a useful item, but nVidia may not be very happy about that.
Unofficially, people can just google "LightBoost on AMD" to find instructions.

However, I'd like to make sure that nVidia appreciates my work in Blur Busters, because nVidia is the one who invented LightBoost & I don't want to upset nVidia -- if you know what I mean.
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