Re: News on the ROG Swift (PG278Q)
Posted: 24 Jul 2014, 12:20
Some people have complained about low ULMB brightness. Actually, it is brighter numbers than I e ep red.
LightBoost on ROG at same strobe length is same brightness as ULMB at same strobe length. The misinformation is simply because some LightBoost monitors uses stronger voltage boosting during strobing. The same voltage boosting during ULMB occurs, resulting in the same brightness.
Traditionally, 24" LightBoost is brighter than 27" LightBoost. That is likely where all the misinformation started. The ROG 27" ULMB is much brighter than a lot of 27" LightBoost monitors.
Without voltage boosting, 300cd/m2 at full persistence (8.3ms at 120Hz) becomes less than 70cd/m2 at 2ms persistence without voltage boosting during strobes. That is mathematically only (2ms/8.3ms)ths brightness, or less than one quarter brightness by default. ASUS succesfully gets much brighter than that, successfully hitting triple digits. Very few strobed 27" monitor models can exceed 100cd/m2, even at full 2.5ms strobes, which is longer than the ROG strobe lengths. Voltage boosting during strobing helps. LEDs can often safely accept 2x-3x power for brief periods, so manufacturers take advantage of that for brighter strobed operation.
EIZO Tuebo240 is brighter simply because of more expense put into engineering a bright strobe, and the LEDs used. Also, sometimes it uses silly overkill brightness ability (>1000cd/m2) in order to be able to have good bright strobing capability at desired brightness levels.
You will not get much lumens of shorter strobe lengths. The same issue arises with all adjustable-persistence strobed monitors (LightBoost 10% on LightBoost, ULMB strobe adjustment on ROG, and BENQ Z-Series using Blur Busters Strobe Utility). I was the one who convinced manufacturers to add a strobe length adjustment.
ASUS has shipped BlurBusters a loaner unit to test, which will arrive sometime soon, on time for a late-August review article or early September review (on time for school season).
LightBoost on ROG at same strobe length is same brightness as ULMB at same strobe length. The misinformation is simply because some LightBoost monitors uses stronger voltage boosting during strobing. The same voltage boosting during ULMB occurs, resulting in the same brightness.
Traditionally, 24" LightBoost is brighter than 27" LightBoost. That is likely where all the misinformation started. The ROG 27" ULMB is much brighter than a lot of 27" LightBoost monitors.
Without voltage boosting, 300cd/m2 at full persistence (8.3ms at 120Hz) becomes less than 70cd/m2 at 2ms persistence without voltage boosting during strobes. That is mathematically only (2ms/8.3ms)ths brightness, or less than one quarter brightness by default. ASUS succesfully gets much brighter than that, successfully hitting triple digits. Very few strobed 27" monitor models can exceed 100cd/m2, even at full 2.5ms strobes, which is longer than the ROG strobe lengths. Voltage boosting during strobing helps. LEDs can often safely accept 2x-3x power for brief periods, so manufacturers take advantage of that for brighter strobed operation.
EIZO Tuebo240 is brighter simply because of more expense put into engineering a bright strobe, and the LEDs used. Also, sometimes it uses silly overkill brightness ability (>1000cd/m2) in order to be able to have good bright strobing capability at desired brightness levels.
You will not get much lumens of shorter strobe lengths. The same issue arises with all adjustable-persistence strobed monitors (LightBoost 10% on LightBoost, ULMB strobe adjustment on ROG, and BENQ Z-Series using Blur Busters Strobe Utility). I was the one who convinced manufacturers to add a strobe length adjustment.
ASUS has shipped BlurBusters a loaner unit to test, which will arrive sometime soon, on time for a late-August review article or early September review (on time for school season).
