As things move away from LCD towards OLED technology we can expect massive improvements in pixel response time and greater breathing space for higher refresh rates. As it does during frame rate dips, with VRR technology enabled. Laptop won't connect to external monitor anymore since latest display driver upate and I can't use the laptop display. The displays with IPS panels (such as the Dell P2414H and AOC q2963Pm) have typical pixel response times of around 6-8ms. The activation process may seem a bit ‘hack-like’, but that’s because LightBoost is only officially endorsed for use as a 3D feature and is being exploited for its 2D blur-reduction benefits. These models employ stroboscopic backlights, using a process dubbed ‘Turbo 240’ on the gaming model, to help reduce motion blur and overcome some of the inherent responsiveness limitations of their VA LCD panels. I assume this is due to the integrated graphics card having difficulty with 2 displays. I recently got a new monitor for my computer at work. Basic ‘Motionflow’ involves the use of MCFI (Motion-Compensated Frame Interpolation) technology whereby intermediate frames are created and inserted between real frames to increase refresh rate. Because of this sampling method will remain just as important as it is with LCDs; for optimum motion performance manufacturers will need to adopt a strobe light source. Because the backlight is constantly illuminated, this is fairly representative of the pixel response behaviour at any given time when running this test. BenQ have also adopted a strobe backlight mode named simply ‘Motion Blur Reduction’, first seen on the XL2720Z, XL2411Z and XL2420Z 144Hz gaming monitors. Don’t move the pointer too rapidly or do this too many times as you will probably make yourself dizzy. A Windows laptop can slow down for myriad reasons, from insufficient memory to malware issues. The backlight is off and no image can be seen. This reflects the massive reduction in perceived blur that accompanies the strobe backlight solutions and reinforces the sorts of MPRT and MMCR figures explored in the previous subsection. Pursuit photographs for various screens and settingsFour monitors are used in this analysis. Nvidia LightBoost – for PC usersStrobe backlight technologies such as these are readily used by LCD TV manufacturers, whilst OLED TVs sometimes offer pixel strobing modes. This is because, as explored in the MPRT analysis, there are some pixel transitions that are slow enough to create additional motion blur on top of that linked to eye movement. As with MPRT this measurement gives a quantitative representation of the level of perceived blur when viewing moving images on a monitor and can be calculated for a display using the UFO Motion tests. Modern LCDs have very rapid response times and high refresh rates which certainly help reduce trailing and perceived blur. The term is tossed around all too freely without a clear understanding of what exactly ‘input lag’ is referring to – pure signal delay vs. taking into account pixel response time as well. All of this indicates that refresh rate is the main influence on the level of motion blur for these displays and hence the MPRT; mirroring the previously explored theory. These models employ stroboscopic backlights, using a process dubbed ‘Turbo 240’ on the gaming model, to help reduce motion blur and overcome some of the inherent responsiveness limitations of their VA LCD panels. But then the frames being sent to the monitor and the monitor’s refresh cycle are left to go out of sync. An increasing number of monitors now run in their native resolutions at a refresh rate of 120Hz or higher (e.g. You can also see a bit of extra trailing, most notably a sort of ‘vapour trail’ behind the yellow UFO cockpit. The reason for this is that some of their pixel transitions are slow enough to create noticeable trailing that isn’t ‘hidden’ by the perceived blur from eye movement. During its normal intended operation, where 3D content is being viewed with 3D Vision 2 glasses, crosstalk is reduced. It’s also worth noting that this fragmentation reduces eye movement and can therefore have a positive effect on perceived blur via mechanisms discussed earlier and indeed in the following paragraph. It’s not uncommon to see such modes available on high refresh rate PC monitors now as well, with a technology called ‘LightBoost’ responsible for drumming up renewed interest in this. The second image on this row shows the BenQ XL2730Z set to use its ‘High’ AMA (Advanced Motion Acceleration response time) setting and maximum 144Hz refresh rate. But we can’t necessarily rely on the required super-high frame rates to accompany this as detail level and effects in games will not remain static. Because the image essentially disappears very briefly when the PWM-regulated light source flicks off there can be visible fragmentation in the blur we perceive when viewing moving images. The ‘reference’ monitor is the Samsung S27A750D, capable of a 120Hz refresh rate and able to use three main backlight operating modes. It is also useful to help reinforce some of the earlier points about what a strobe or impulse-type display does and how this is different to a traditional sample and hold display.

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