XL2720Z vs XL2420Z

[c0re]

Looks like thread "XL2720z V2 + BB Strobe Utility = Greatest Gaming Monitor!" is not viewed because it's pinned, so I will try to make new thread with 2 questions:

What serial number/mask I should look for to get V2 preinstalled on XL2720Z/2420Z?

To compare;
-- The 27" panels (XL2720T LightBoost and XL2720Z BENQ) have more strobe crosstalk than the 24" 1ms panels (XL2420TE, XL2411Z, XL2420Z)

How can I understand "more strobe crosstalk"? How much more? Will I feel this difference in counter strike global offensive?

[Chief Blur Buster]

What serial number/mask I should look for to get V2 preinstalled on XL2720Z/2420Z?

info.benq.us has a downloadable Instructions PDF that lists which serial numbers has V1 firmware.
http://info.benq.us/blog/benq-america-c ... -utilities

To compare;
-- The 27" panels (XL2720T LightBoost and XL2720Z BENQ) have more strobe crosstalk than the 24" 1ms panels (XL2420TE, XL2411Z, XL2420Z)

Simple answer: Strobe crosstalk is a double image artifact, similiar to 3D crosstalk (faint and showing up during high contrast), but can be seen during 2D blur reduction (strobe backlight) use during fast motion. For most poeple, it is not noticed or distracting in most general regular gameplay on most LightBoost monitors and properly-calibrated BENQ Z-Series. Don't worry about it, as long as you're not using the older Version 1 BENQ Z-Series.

Technical answer: Strobe crosstalk is the double-image effect seen during fast motion, usually only limited to high-contrast edges (caused by incomplete GtG pixel transitions during backlight strobing, incomplete GtG leaking between refresh cycles and showing up in consecutive strobes). The strobe crosstalk artifact is rather intense on Version 1 BENQ Z-series. Now, mostly the strobe crosstalk is noticeable only at the top/bottom edges of the screen, due to the asymmetry of the top-to-bottom LCD panel refresh versus the global all-at-once backlight flash. There are screenshots of strobe crosstalk on the Blur Busters Strobe Utility page. This is what it looks like when there is bad strobe crosstalk (PHOTO) and when there is only minor strobe crosstalk (PHOTO) -- these are photographs of TestUFO Motion Test: Alien Invasion.

[c0re]

Thanks, Chief, for explanations! Not everything is clear for me.

So in short the best way is to search monitor with fw v2 xl2720z that has 4th sign in serial not "1,2,7,8,9,A,B,C".
I can't order at shop benq, there is no such shop in Russla. I will try to find right serial in local shops.

[Chief Blur Buster]

That is a reasonable assertation. To be safe, make sure manufacture date is also pretty recent.

I've seen February 2014 units still use old firmware, for example.