For most TVs, motion blur is a problem for watching sports and video games due to the fast motion of the story and the long pixel response time. In movies, it's almost impossible to see motion blur due to the low video frame rate resulting from the slow shutter speed of the camera when creating the video. The degree of blur that a person considers acceptable. subjective, some people are much more sensitive to this visual impairment.
Characteristics of gaming monitors
LCD TVs and LED-backlit monitors inherently have relatively long pixel response times, while OLED panels are much shorter. A video with a higher frame rate will have less motion blur than an identical video with a lower frame rate if the refresh rate of the TV matches that frame rate. For example, a 120Hz video on a TV at 120Hz instead of 60Hz.
Similarly, a 120Hz monitor will only have 60Hz blur if the video frame rate isdoes not exceed 60 Hz. In this way. for 60Hz video on a 120Hz TV, the video signal will still only be 60fps and the frame time will not change. The same applies to 24Hz and 30Hz on TVs with higher maximum frame rates.
Component Score:
- Pixel response time is the time it takes for an LCD panel to change from one color to another. With a long gap, the pixels can't keep up with moving objects, and so you can see a long trail of blur following them.
- Most motion controls are static.
Reasons for Motion Blur
One of the effects of a slow refresh rate or pixel response time is that the image may look washed out. This happens for several reasons.
The first has to do with response time. When slow, it takes some time to completely move from its previous state to a new one. This results in a hidden or ghost image behind the new one. The slower the pixels react, the longer the trace and the less clear the picture. The parameter, which is the best pixel response time on the TV, depends on the technical characteristics of the model.
The second reason is eye tracking. The brain may perceive the image as blurry. The eyes naturally track the image on the screen, but since it is static, even for a fraction of a second, the eyes feel the perception as the gaze slides across the screen.
Blur inmovement is created by several parameters:
- Response time - the parameter shows how long the pixels of the TV go to a new state. Longer times mean longer blurry trails on moving subjects. Gamers want to know in advance what is the best pixel response time on a TV when switching from one color to another.
- Frame time - the amount of time a frame is displayed on the screen. The longer the frame time, the more blur is captured.
- Blur inside the video itself. This is due to the action of the camera exceeding the shutter speed. Filmmakers usually take this kind of blur into account when planning filming for a movie or show.
- Any delay may occur due to the use of wireless keyboard, mouse and internet.
If the display is primarily used for video, audio, or gaming, which requires accurate pixel response time (ms), consider testing the input lag setting.
Response parameters
This is the time it takes a pixel to transition from one color to another, measured in milliseconds (ms) and is directly related to the refresh rate. Because the monitor refreshes quickly, which pixel response time is best will depend on how quickly the monitor's pixels respond. A response time of 16ms corresponds to a theoretical maximum refresh rate of 60Hz.
Response time is defined as the time it takes a pixel to go from black to white and back again. Most manufacturers display gray to gray or GTG response time to post faster.
The response time of a matrix pixel is usually represented in milliseconds. Longer response times can negatively impact gameplay or movie viewing by leaving trails called ghosts. This glitch is not only confusing, but also a distraction from sensitive games.
Input lag is the difference in time between when the user enters a command from the keyboard, mouse, or other peripheral and when it appears on the display. This can greatly affect performance in FPS, RTS and fighting style games.
TN or stranded nematic panels usually have faster response times. However, many IPS panels, especially those used with commercial gaming monitors, have low enough response times to avoid even the most minimal splitting.
Related TV settings
Motion interpolation increases the frame rate of the video by creating and inserting transition frames between existing source frames, reducing monitor pixel response time, frame time and creating a smoother overall look. Moreover, since it does not improve, the trail length on moving objects does not change.
Some TVs have the ability to add backlight flicker or insert black frames to reduce frame time and clarify motion. It also has the effect of dimming the maximumbrightness, although, as with interpolation, this does not affect the response time. In this case, the trail length on moving objects does not change, and the refresh rate also does not affect it.
It is impossible to compare response times reported by different manufacturers and reviewers without knowing the testing methodology. Experts have tested several gray to gray transitions and presented an average value, but some brands indicate the fastest response time that the screen is capable of or test the time it takes to transition from one shade to another and then back.
Monitor refresh rate
For years, refresh rate and pixel response setting selection has been a popular consideration for gamers when buying a monitor. Since these characteristics show the rate of change of the image and characterize the number of updates per second, the value of which contributes to a better perception. To compare which pixel response time is best on a monitor, it is measured in hertz (Hz).
Standard baseline for this to give a satisfactory picture depends on the particular application of the panel. Home theaters are able to provide a quality display at 24 Hz, and the old PAL and NTSC TV standards at 50 Hz and 60 Hz, respectively. A typical PC monitor is 60Hz, but the latest gaming monitors hit 240Hz.
For a long time 144Hz was the de facto standard gaming monitor refresh rate (6x24Hz), but nowthere are enough panels with a frequency of 240 Hz on sale.
You need to be frank. If the user is not actually playing competitive multiplayer games, especially FPS games, then they are better off prioritizing image quality over refresh rate and response time. That is why models like the Asus PG279Q and Acer XF270HU have proven to be so popular and find the perfect compromise between all the important factors.
Adjust parameters
In general, a pixel response time of 5ms or less is considered good for gaming. Most monitors, even IPS panels that are listed as gaming monitors, tend to be very good in this area. Checking customer reviews for side effect issues is a good way to determine if a manufacturer hasn't provided a real response time.
There are several steps you can take to reduce the input lag of a monitor if it has no limits. Therefore, it is important to choose the right monitor or TV from the very beginning.
A pixel response time of 8ms is acceptable for gaming. In general, input lag is greater on TVs where additional processing is done.
Some simple ways to fix the visual glitch and reduce input lag include the following:
- Change display mode.
- Change console settings.
- Change HDMI to VGA cable.
- Use a lower resolution.
The base frequency is usually between 30Hz and 60Hz, which meanswhat is the response time of a pixel on a TV will not be small. Smart TV from LG with features of TruMotion-technology, which allows to increase the hertz by interpolation, that is, creating intermediate frames of the hybrid between the image, providing a clearer picture of movement and reducing flicker. Thanks to this technology, you can increase the refresh rate to 120, 240 and even up to 480 Hz.
For LG TVs, follow the instructions to access TruMotion options:
- Go to "Advanced settings".
- Select "Picture", then "Settings" and finally "Settings".
- Select TruMotion.
- Try setting options or disable feature.
Remove backlog delay
Input lag typically occurs with flat panel LCDs and plasma displays because the screen takes time to process the image to improve its quality. If you're using your display or HDTV to get work done, browse the web, or watch movies, you rarely experience latency.
There are several ways to measure input lag. One approach is to split the signal between the no delay CRT display and the LCD. Alternatively, use the web-based Human Benchmark reaction test, which tests the response to a color change.
Gamers are noticing the input lag on the display is longer than usual. The delay between pressing a button and the corresponding on-screen effect makes complex maneuvers or combinations difficult. This greatly affects first-person shooters, fighting games andrhythm games like Rock Band and Guitar Hero.
Steps can be taken to reduce the backlog. Because all flat screen displays have some latency, lower it to the point where the gamer stops noticing it.
First, they check if the TV has a game mode. This is basically a display mode that disables post-processing routines at the expense of a slight reduction in image quality. Then disable as many other video processing options as possible. Each manufacturer tends to identify their features with different acronyms such as DRE or 3DNR, to achieve quality one should try turning them off and see if the lag improves.
If using HDMI or component cables to connect the setup to the display, try using VGA and HDfury instead.
Setting the game mode
If the TV has a game mode and it is not used, then there will definitely be an input delay. This is because, in general, newer TVs do their own image processing before displaying it on the TV, causing a delay between the source output and the displayed results. Setting the TV and monitor to game mode will eliminate this processing and provide a 1:1 source for bandwidth display.
You can use the Leo Bodnar input lag tester to optimize your TV settings:
- Switch the input mode from AV to PC/HDMI.
- For monitors and TVs,which have an HDMI label instead of "PC", such as 90% of Samsung and LG products, you need to manually rename the input mode to "PC".
- Turn on game mode if available. If the user is into calibrating TV pictures and is frustrated by the lack of white balance fine tuning, check if there is a factory menu for finer adjustments.
- Game Mode is the most important thing to do as it reduces input lag and is found in most modern TVs where settings including colors, blur and other variables set specifically for video games help reduce video game lag. While certain settings can help with moving graphics such as live sports, these same settings can cause video game play to lag or feel sluggish. In most cases, this option disappears after you select PC mode. It usually stops everything in post-processing, which is what causes input lag, while game mode usually stops for HDMI mode only.
- Find a setting called 'Response Time' or 'Pixel Overload', 'Overload', usually something like 'Normal', 'Faster' or 'Fastest'.
- Disable any power saving settings or ambient screen dimming. Both of them add extra lag (~10ms each).
- Check each HDMI input. It happens that out of 4 HDMI inputs, two or more have lower input lag (6ms less) than the others.
- Using the TV speakers,add an input delay. If possible, use a separate audio system, such as a soundbar. Often this tool can add ~8ms latency.
- Some TVs like the Vizio have a smooth motion effect - turn it off.
MPRT tests
For a serious test of the display, you can use the PixPerAn (Pixel Persistence Analyzer) test, which helps you analyze the sensitivity of the pixels. It uses the principle of traditional static photography or video. You can use this test to calculate a value known as MPRT (Moving Picture Response Time).
MPRT is the general level of perception of motion reflections on monitors. The test allows you to use a range of pixel transitions from black (0% gray) to white (100% gray) with intermediate gray steps of 25%, 50% and 75%. The MPRT is designed to reflect the "overall visual review", so refresh rate and monitor selection behavior are really the main factors.
Particularly slow pixel responses may slightly increase the MPRT values to get a representative result. This is because artifact transitions can be very important when aggressive gray-to-gray acceleration is used. Such artifacts can certainly have a significant impact on MPRT and should therefore be used separately.
Using PWM
Pulse Width Modulation (PWM) is a technique used to modulate backlight brightness on some samples andimages on the LCD. In order to use alternating current to modulate brightness, a PWM controlled light source is turned on and off rapidly to achieve a given brightness. Some people are sensitive to visual discomfort. Flicker also has implications for the perception of objects on monitors. This may be a visible fragment of blur, which is felt when viewing moving images. Fragmented blurring is called PWM artifact.
LightBoost and stroboscopic backlighting includes on and off pulses, allowing the LCD to display information only for those users who split seconds and display nothing at all for the remaining time. This is only due to momentum driving, including overload artifacts that can cause aggressive gray to gray acceleration. Sony Motionflow is one of the most popular systems available for LCD TVs.
Basic Motionflow includes the use of MCFI (Motion-Compensated Frame Interpolation) technology, which creates intermediate frames and inserts between real frames to increase the refresh rate.
To sum it up, obviously the best choice to buy a TV with little motion blur is to find a model with a low response time. The user can reduce blur by watching video at a higher frame rate, by enabling motion interpolation or backlight flickering, bringing the pixel response time down to 1ms. At the same time, it must be remembered thatEnabling these advanced features may cause other problems in the video, so everything needs to be handled in moderation.
