How To Find Out The Response Time Of The Monitor

Eliminate lag lag

Input lag typically occurs on flat panel LCDs and plasma displays because the screen takes time to process the image to improve image quality. Whether you’re using a display or HDTV for work, web browsing, or movies, the lag is rarely noticeable.

There are several ways to measure input lag. One approach is to split the signal between a CRT display without delay and an LCD display. Alternatively, a Human Benchmark web test is used, which checks the response to a color change.

Gamers notice the input lag on the display being longer than usual. The delay between pressing a button and the corresponding effect on the screen makes it difficult to perform complex maneuvers or combinations. It strongly affects first person shooters, fighting games and rhythm games like Rock Band and Guitar Hero.

Steps can be taken to reduce the lag. As all flat panel displays have some latency. lower it to the point where the gamer stops noticing it.

First, check if the TV has a game mode. This is basically a display mode that disables post-processing at the expense of a slight reduction in image quality. Then turn off as many other processing parameters as possible. Each manufacturer tends to identify its traits with different acronyms like DRE or 3DNR, to achieve quality one has to 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.

Related TV settings

Motion interpolation increases the frame rate. creating and inserting transition frames between existing frames of the original, shortening the monitor pixel response time, frame time and creating a smoother overall look. over, since it does NOT improve, the length of the trail on moving objects does not change.

How To Find Out The Response Time Of The Monitor

Some TVs have the ability to add backlight flicker or insert black frames to shorten frame times and clarify motion. This also has the effect of dimming the maximum brightness, although, as with interpolation, this does not affect response time. In this case, the length of the trail on moving objects does not change, and the refresh rate also does not affect it.

It is not possible to compare response times quoted by different manufacturers and reviewers without knowing the testing methodology. Experts have tested several gray-to-gray transitions and presented an average, but some brands indicate the shortest response time a screen is capable of or are testing the time it takes to transition from one shade to another and then back.

parameter adjustment

There are several steps you can take to reduce input lag when your monitor has limitations. Therefore, it is important to choose the right monitor or TV from the very beginning.

A pixel response time of 8ms is acceptable for games. In general, input lag is greater on TVs where additional processing is done.

Some simple ways to fix visual glitch and reduce input lag include the following:

  • Change display mode.
  • Change console settings.
  • Change cable from HDMI to VGA.
  • Use a lower resolution.

The base frequency is usually between 30 Hz and 60 Hz, which means that this pixel response time on a TV will not be small. LG’s Smart TV features TruMotion technology, which increases hertz by interpolation, that is, creating a hybrid between images, providing a clearer picture of movement and reduced 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 “Additional settings”.
  • Select “Image”, then “Settings” and finally “Options”.
  • select TruMotion.
  • Try customization options or disable the feature.
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Monitor refresh rate

For years, refresh rate and pixel response parameter choices have been popular research for gamers when shopping for 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 better on a monitor, it is measured in hertz (Hz).

The standard baseline for this to provide a satisfactory image depends on the specific application of the panel. Home theaters are capable of delivering a high-quality display at 24Hz, and the old TV standards are PAL and NTSC. with 50 Hz and 60 Hz, respectively. A typical PC monitor is 60Hz, but the latest gaming monitors go up to 240Hz.

For a long time 144Hz was the de facto standard refresh rate of a gaming monitor (6x24Hz), but now 240Hz panels are enough for sale.

You need to be frank. If the user is not actually playing competitive multiplayer games, especially FPS, then they are better off prioritizing image quality over refresh rates and response times. This is why models such as the Asus PG279Q and Acer XF270HU have proven to be so popular and find the perfect compromise between all the important factors.

Pixel response time and how to change it

For most TVs, motion blur is a problem when watching sports and games due to fast scene movement and long pixel response times. It is almost impossible to see motion blur in movies due to the low frame rate. obtained by the slower camera shutter speed while developing. The amount of blur that the person will find acceptable. subjective, some people are much more sensitive to this visual impairment.

response parameters

This time it takes a pixel to transition from one color to another is measured in milliseconds (ms) and is directly related to the refresh rate. Since the monitor updates the image quickly, which pixel response time is best will depend on how quickly the monitor pixels respond. 16ms response time corresponds to 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 vendors display gray-to-gray or GTG response times for faster posting.

Matrix pixel response times are usually expressed in milliseconds. Longer response times can negatively affect gameplay or movie watching, leaving traces called ghosts. This glitch is Not only confusing, but also distracting from sensitive games.

Input delay. it is the difference in time compared to when the user enters a command from the keyboard, mouse or second peripheral of the device, and when it is displayed on the display. It can have a big impact on performance in FPS, RTS and fighting games.

TN or twisted nematic panels usually have a faster response time. However, many IPS panels, especially those used with market gaming monitors, have a slow enough response time to avoid any even the smallest split.

Setting up game mode

If the TV has a game mode and is not in use, there will certainly be input lag. This is because, in general, newer TVs do their own image processing before displaying it on the TV, resulting in 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 displaying bandwidth.

You can use Leo Bodnar Input Lag Tester to optimize your TV settings:

  • Switch the input mode from AV to PC / HDMI.
  • For monitors and TVs that have HDMI label instead of “PC”, for example, for 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 fond of calibrating television images and is frustrated by the lack of fine-tuning the white balance, check if there is a factory menu for more detailed settings.
  • Game Mode. this 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 are set specifically for games to help reduce game lag. While certain settings can help with moving graphics such as live sports, these same settings can result in game lag or a feeling of lag. In most cases, this option disappears after selecting PC mode. It usually stops everything in post-processing, which 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. They both add additional lag (
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10 ms each).

  • Check every HDMI input. It so happens that out of 4 HDMI inputs, two or more have lower input lag (6ms less) than others.
  • Using TV speakers add input lag. If possible, use a separate audio system, such as a soundbar. Often this tool can add
  • 8ms delay.

  • Some TVs, like the Vizio, have a smooth motion effect. turn it off.
  • MPRT tests

    For a serious display test, you can use the PixPerAn (Pixel Persistence Analyzer) test to help you perform pixel sensitivity analysis. He uses the principle of Traditional static photography or. You can use this test to compute values ​​known as MPRT (Moving Image Response Time).

    MPRT. it is the general level of perception of the movement of thinking on monitors. The test allows the use of a range of pixel transitions, from black (gray 0%) to white (gray 100%) with intermediate gray steps of 25%, 50% and 75%. MPRT is designed to reflect a “general visual review”, so refresh rate and monitor selection behavior are really major factors.

    Especially slow pixel responses can slightly increase the MPRT values ​​to get a representative result. This is because artifact transitions can be very important when aggressive greyscale acceleration is used. Such artifacts can certainly have a significant impact on MPRT and therefore should be used separately.

    Characteristics of gaming monitors

    LCD TVs and monitors with LED backlighting by their nature have very long pixel response times, while OLED panels. much shorter. a higher frame rate will have less blur than an identical one with a lower one if the TV refresh rate matches that frame rate. For example, 120Hz on TV at 120Hz, not 60Hz.

    Likewise, a 120Hz monitor will only have a 60Hz blur if the frame rate does NOT exceed 60Hz. In this way. for 60Hz to 120Hz TV, the signal will still only be 60fps and the time frames will not change. The same applies to 24Hz and 30Hz on TVs with higher maximum frame rates.

    • Pixel response time. this is the time it takes for the LCD panel to change from one color to another. Over a long period, pixels cannot keep up with moving objects, and therefore you can see a long trail of blur following them.
    • Most of the motion controls are static.

    Response time (sensor speed)

    One of the main parameters for choosing LCD monitors is response time. For quite a long period of time, there have been models with the declared time of 2-5ms on the market. But unfortunately (as always), what is promised does not always come true, and what is written is also written on the fence :). If some time ago, the response time for all monitor models was determined according to the ISO 13406-2 method, where only the speed of switching the pixel from black to white and vice versa is taken into account, then the response time of new models is measured using a new, more perfect and honest method, called GtG (Gray-to-Gray). It calculates the arithmetic mean is switched between all possible states of the pixel.

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    Unfortunately, our laboratory does not have the necessary technique to measure the results of sensor speed, but we have an excellent opportunity to PROVIDE you with photographs of image areas using the Pixel Persistence Analyzer test. It allows you to compare the inertia of pixels of different LCD monitors. Matrix speed test contains 5 “running” images, each of which well simulates the user’s work with a PC (reading text, working with program windows, games). For a subjective assessment of the matrix speed during testing, a CRT monitor is connected.

    What is monitor response time?


    uniformity of illumination

    Backlight uniformity is only applicable to LCD monitors. The problem is that due to the uneven pressing of the matrix to the body, as well as the frequent uneven illumination of the lamps on the back of the matrix, when the screen is flooded with any color, its brightness is different at different points on the screen. The uniformity of the backlight is NOT constant, and may be different for each monitor.

    To evaluate this parameter using a colorimeter and the BasICColor Display program in Measure mode, the brightness of the white field is measured at 35 points on the screen. In the future, the results are placed in an Excel table, and the results are analyzed for the average and maximum deviation from the center point.

    How to find out and check the response time?

    Although they are milliseconds in Africa, they are milliseconds, but surely many have come across the fact that different monitors with the same performance form an image of different quality. This situation has arisen due to different methods for determining the response of the matrix. And which method of measurement was used by the manufacturer in each specific case, it will hardly be possible to find out.

    Input-lag (Input-lag)

    Input lag is the delay in displaying frames, to be more precise, it is the delay between receiving an image into the monitor frame buffer and displaying it on one screen.

    To measure this parameter, two monitors are connected to the card (CRT as a reference and an LCD) in cloning mode, after which InputLag Tester is launched, showing milliseconds.


    Test of real matrix response speed. 6 test options available.

    We test the monitor for dead pixels, color rendition and image quality

    To start testing the monitor, you need to click on the HTML Window link, after which the online test page will load. It is also possible to open the text in a separate browser window with a resolution of 1920 × 1080, but can be adjusted individually. Plus, you can download a monitor testing application for Windows, which you need to install and then check the status of the monitor without the Internet. Here the choice is yours, but I decided to choose HTML Window.

    The online monitor test page initially appears in black and white. Here you can check how shades of black and white are displayed. But this is not the end of the Online monitor test online service. If you move the mouse cursor to the top often window, a menu for selecting test modules will appear. Main page is now selected.

    Buying a card with a thousand or one and a half conventional units in order to drive your favorite games at at least a hundred FPS, and give a signal to the monitor, which barely pulls forty FPS, is a little irrational. Better to put a hundred on the display and enjoy the full dynamics of games and movies without disappointment. you definitely won’t get 40 ms of the pleasure matrix, and the joy of owning a powerful adapter will cover the poor image quality.

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