BENQ XL2720Z: Another official motion blur-eliminating strobe backlight

Posted Oct 31, 2013 by

The tsunami wave of low-persistence CRT-motion-quality LCD’s continues.

Hot on heels of G-SYNC official strobe mode, and EIZO’s Turbo240 official strobe mode, BENQ announces the XL2720Z (Z-suffix) with the Motion Blur Reduction feature, which Blur Busters confirms is another high-efficiency LightBoost-style strobe backlight, official and easily enabled in monitor menus.

EDIT: Blur Busters confirmed strobing directly from BENQ staff; BENQ is also sending a review unit to Blur Busters before the Holidays, for us to test as well.
EDIT: See new Blur Busters Strobe Utility to tweak BENQ Blur Reduction.

About Mark Rejhon

Also known as Chief Blur Buster. Founder of Blur Busters. Inventor of TestUFO. Read more about him on the About Mark page.

16 Comments For “BENQ XL2720Z: Another official motion blur-eliminating strobe backlight”

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2411Z flackert?
10 years 7 days ago
GitDat
Member
GitDat

Any updates on this bad boy? I think I’m all in on the strobing vs. G-Sync myself 🙂 Motion blur is the DEVIL!

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10 years 3 months ago
Mark Rejhon
Author
Mark Rejhon

Yes, strobing versus GSYNC will certainly be a personal preference, as they fix separate motion quality aspect.

Strobing — fixes motion blur. (Main Cons: Brightness loss. Sometimes less color. Needs high framerates to look good.)
GSYNC — fixes tearing/stutters. (Main Cons: Doesn’t fix motion blur. Only available on TN at moment.)

As a rule of thumb:

Consistent 120fps — Strobing can look better at stroberate=framerate
VSYNC ON 120fps — Strobing can look better at stroberate=framerate
VSYNC ON, low framerate — GSYNC can look better in comparison
VSYNC OFF — Personal preference, as strobing can amplify visibility of stutters/tearing, but you still have less blur with strobing than GSYNC.
VSYNC OFF, ultrahigh framerate — strobing can start looking really good
VSYNC OFF, ultralow framerate — GSYNC can start looking really good
Variable frame rate — GSYNC can look better in comparison
Framerates far less than stroberate — GSYNC can look better in comparison

So the pattern emerges; consistently high framerates favours strobing, and lower/variable/fluctuating framerates favours GSYNC.

(Feel free to discuss these aspects on Blur Busters Forums too!)

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10 years 3 months ago
Alamar
Member
Alamar

Hi. My question is does it burden graphic card performance like lightboost making lower max fps in games.
Btw my opinion is they should make 16:10 and 4:3 for games/work, 16:9 is good only for cinema movies and monitor is not mainly for this.

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10 years 5 months ago
Mark Rejhon
Author
Mark Rejhon

It’s a principle of motion clarity:
— Low-persistence / impulse displays (strobe/flicker/phosphor/etc) such as Plasma, CRT, LightBoost, Turbo240, BENQ Motion Blur Reduction, etc.

Displays with very sharp motion clarity, means that motion blur is no longer hidden by stutters. Stutters are easier to see at higher framerates on impulse/strobed displays. So you want higher framerates than usual on ALL impulse driven displays (frame rate near refresh rate), to make motion look good. Viewing http://www.testufo.com on any strobed display, clearly illustrates that frame rates matching refresh rate, looks far better on these displays.

e.g. Strobe backlights are not necessarily demanding on GPU. It’s just a function of LightBoost being limited to high strobe rates. And it’s known that it is primarily “visually appealing” with higher frame rates matching strobe rate (and LightBoost can’t strobe fewer than 100 strobes per second). Thus, that’s why we recommend 120fps@120Hz or 100fps@100Hz. (LightBoost is like a CRT limited to 100Hz to 120Hz). Fortunately, some upcoming strobed displays can strobe at lower rates such as 60Hz or 85Hz, so you have the option of running lower frame rates without motion blur, but with increased flicker. (120Hz flickers less than 85Hz or 60Hz). With strobing only 75 or 85 times per second, you can have really great looking CRT-style 75fps or 85fps, if you want a good balance between visible flicker and CRT motion clarity, without excessive GPU requirements.

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10 years 5 months ago
damiola
Member
damiola

Seems like this Benq model can 144hz strobed $$$

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10 years 5 months ago
Mark Rejhon
Author
Mark Rejhon

We’ll find out — if strobing is supported at 144Hz.

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10 years 5 months ago
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