Calibrate screen for free Learn step by step!

Learn throughout this excellent article how calibrate screen Step by Step. In addition, you will find out in detail the ways to calibrate a screen without using a colorimeter.

Calibrate screen

Calibrating the screen consists of modifying or adjusting the screen to recover color or certain bits that are dead during the time of use, and to give them that brightness and tone again to see the images in good quality.

It is not the most appropriate way to perform a serious calibration of a monitor, since the margins of change are very abrupt and we depend on our eyes to decide if the calibration is correct (and no, they are not very reliable).

Why calibrate the screen?

Perhaps we can think that calibrating the screen is only worth it if we are designers or we are professionally dedicated to the audiovisual or photographic part. But nothing is further from the truth, we should all calibrate the screen in order to obtain the highest possible color quality.

Normally, high-end monitors or screens, such as panoramic screens or larger monitors that have very good resolution, tend to include a built-in calibrator, for every so often to automatically calibrate.

In this case, it is true that a colorimeter will make a lot of difference, but on a more discreet screen, a manual calibration will greatly improve image quality.

We have to bear in mind that a screen is made up of pixels that vary their own light or vary the amount of light that passes through them to represent colors.

For this reason, the light generated is always artificial, and will never be of the same quality as the sunlight whose glare on objects will make us perceive colors through our eyes.

This on screens is just an imitation, and it will depend a lot on the technology used and the calibration to have more or less faithful colors.

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What do you get when calibrating the screen?

• You can see the exposure of the colors as they are and not as your monitor used to think them to be.
• You will be able to recover the pixels or bits that over time were running during the screen and lost their quality.
• You will be able to notice more the colors when adjusting or modifying the monitor.
• You will see the photos or videos more vivid or with more light enhancement, thus giving more visual resolution

Ways to calibrate a screen

The ways to calibrate a screen will depend mostly on the screen and the user's knowledge because these factors together dominate the calibration technique.

By colorimeter: 

It is the most professional and exact way to do it, although we will need somewhat more specific knowledge than in the other methods. The colorimeter is a device that literally photographs the screen while performing a test with a palette of colors and tones to buy them with the ideal colors.

In this way, the program creates a color profile that installs or modifies the characteristics of the screen. thus giving a level of professionalism when the monitors graduate. Every so often it must be calibrated to always have the best color fidelity.

Hardware calibration:

This third option implies a mandatory cost but it is certainly worth it, since it offers us good results. It consists of the use of an external calibrator, which we will connect to our computer through a USB port and that we will place on our screen.

By means of software that we will have to install in our operating system, the calibrator itself will be the one that will automatically carry out all the adjustments of our monitor.

Without a doubt, it is a very good option, since the calibrator will perfectly adjust the contrast, brightness and gamma of our monitor, ensuring the sharpest and most authentic images we see on our screen.

Via software:

In this method it is less professional than the previous one, although it does not require a colorimeter to calibrate the screen. A program shows us certain screens with color schemes along with an explanation of how they work.

We will be the ones who manually through the screen or control bars, we will adjust the values ​​of an image or reference color. Since it is our view and perception that determines the optimal point that will be subjective.

Through a web page:

This time the guide will be a web page, who will tell us the steps to follow, this web page is freely accessible. This does not require any profile, history or record, which will only be a calibration.

In a direct way:

To do this, we just have to get an ICC profile created by a third party for our monitor and install it on our system. For that you must go to the TFT-CENTRAL page and search its repository for an ICC profile for your monitor.

There are many models and they are also profiles made with a colorimeter and professional programs, so this will be a guarantee of success.

Essential parameters to know how to calibrate the screen

The following parameters are essential when calibrating a screen since we have to know that we are going to handle or that such a program will adjust us.

Brightness:

Brightness is the luminance that a screen is capable of giving us. It is measured in nits or cd / m2 are two equivalent measurements.

Contrast ratio:

Contrast is the difference between the dark tone that a monitor can represent, and the brightest tone. That is, it is the luminance ratio between the deepest black and the lightest white.

Range:

It is the parameter that is related to the luminance and the monitor voltage. Since it is this who has the color palettes in the panels and represents the real colors, and the relationship of operation of the screen through the light that runs in the panels of exponential type with a gamma value

Today's monitors use this parameter for their color calibration, to resemble the performance of a CRT. It will be very important in a calibration.

ICC Profile:

Set of data that characterize a color space, through a calibration program with a set of parameters that associate the monitor's colors with the ideal calibration values, through its RGB configuration.

Color temperature or white point:

It is the degree of warmth or coldness with which a color is presented on the screen. It really is the light that a black body will emit when it is heated to a certain temperature.

Warm colors reflect a lower color temperature, while cool tones have a higher color temperature.

Color Depth:

It refers to the number of bits that a screen uses to convey the resolution to represent the color of a pixel on its screen. The more number of bits, the more colors and the more quality this monitor or screen will be able to present before our eyes.

Color space:

It is an interpretation system for the colors that will be shown by means of a mathematical model. It is very important in design, since the programs work with certain color spaces, for example, RGB, DCI-P3 or the CMYK of printers, the degree of adjustment to a color space reflects with which the colors that will be represented belong to him.

DeltaE:

It is the difference between one color and another, the difference between the color represented by the monitor and the space between the color and it is this who measures the reality of color representations for a certain space.

Steps prior to a calibration

It is important to take into account some parameters before starting to calibrate the screen. This is extendable for all methods.

Calibrate after about 30 minutes of use:

It is important that the screen is properly warmed up before starting the calibration. In this way the temperature of the colors and RGB curves will stabilize and the calibration will be more accurate.

Reset to original values:

Every screen has an option to reset to factory settings. Thus we will start from zero in the calibration, with the parameters that the manufacturer initially considered as ideal.

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You check the current values:

Check the values ​​before modifying or adjusting, since the calibration programs ask us to modify parameters that we can alter too much if we do not have enough control. Above all, gamma, RGB, brightness and contrast, we must know what the starting reference was.

Always set the native resolution and maximum color depth:

Whatever your screen type and resolution, a monitor will generate better colors at its factory resolution. With the color depth the same will happen, to see these parameters we will go to Screen Configuration, to verify that this is correct and to be able to do the calibration in the factory mode so that it is of quality.

We must make sure it is 32 bit true color. Then, in the graphics card configuration, we will verify that it is at 8 or 10 bits in the corresponding section.

Have as natural lighting as possible in the room:

Because our eyesight is going to be the calibration element, natural light is the one that best represents colors. If possible, do it during the day and without artificial light and at a medium level, not too dark, not too bright.

Comparative results between the systems. Which one will be better?

After looking at the different methods, we have performed a comparative test to evaluate the Delta E of each calibration with the X-Rite Colormunki Display colorimeter. What you do is buy a calibration with the colorimeter itself, for this a sRGB profile has been taken as a reference for the comparison of the Delta E.

The most accurate calibration is done with the colorimeter, while the worst is the one carried out with the Calibrize application, as expected. However, it is very close to what has been done with Windows, while the best without a colorimeter has been the one done with the web.

This makes two important things clear. The first is that the references for calibration have a lot to do with adjusting the monitor and the second is that our eyesight seems to be quite susceptible to those reference graphs.

There is clearly a disadvantage of not using a colorimeter, which with an unbiased lens and camera is able to compare colors in a much more comprehensive way than we can.

Of course, a professional, whose eye must be more used to variations in tones; perhaps the result would be totally different in their hands, this is similar to musicians, who have a more educated ear for music.

Monitors default settings

Some monitors come with a preset configuration, these are necessary for their essential operation, while other monitors that come with very inefficient preset configurations. In general, with very few exceptions, all stock monitors will display your images overexposed and the colors will be clearly off.

Limitations, tips and recommendations

If you already have the knowledge and have an idea of ​​what tools to use to calibrate, the key factor will be the monitor. Since not all monitors are the same and not all accept the same configuration tools, to obtain the necessary changes that you want to obtain.

There is also another factor, aging. As your monitor becomes obsolete, its performance will decrease. However, you should not go crazy about this, because if you bought a good quality monitor, it will still work properly after 4-6 years of good use.

Most likely, by the time your monitor's performance drops significantly, you're feeling like it's breaking down and being forced to buy a newer model. and it turns out that you can give it more life and power by looking for a screen calibrator, increasing its pixels, colors and light to have a monitor with more gamut.

More benefits when calibrating a monitor

The benefits don't stop there. With a calibrated monitor, your movies and TV shows will look their best, you'll see what the producers did so hard to make skin tones look natural.

By modifying the manufacturer's predefined settings, with your calibrated monitor you will be able to reduce energy consumption, since before losing pixels it was very hot when forced, and this will expand its useful life. It will have a longer lifespan because the LED lamp will now work at a lower setting and not at the maximum setting, this setting will be made automatically by the monitor after calibration.

Native programs to calibrate

Fortunately to calibrate the screen more easily and everything comes out correctly, there are native applications or programs that can adjust your screen again. These alternatives will be available for windows software and will be freely available to the public.

Calibrate:

This is a software that guides you step by step through the most appropriate configuration of your monitor, showing images that allow you to alter colors and work with all the bits of your monitor's resolution in order to find the perfect setting for your computer screen.

Screenbright:

It is an application designed to accumulate all those bits of lost colors and adjust and modify the correct parameters of your computer. Giving contrast, brightness, range and color temperature to save a better configuration and restore the resolution of your monitor.

display tuner:

If you are looking for a complete program to reset your monitor, this application should keep it in mind. With basic and advanced settings to adjust the screen image and to be able to save the correct profile that will give the best color resolution.

Graphics card software:

The NVIDIA Control Panel and the AMD Vision Engine Control Center are the two programs that these popular graphics card manufacturers offer to choose the perfect image for your monitor.

If you have an NVIDIA or AMD board and you don't have this software, you should check the drivers to update them and keep them up to date.

f.lux:

This software adjusts your monitor automatically depending on the schedule, modifying the color temperature and brightness in order to take care of our eyesight.

In this way we can say that calibrating the screen is as important as when we are working at the computer and we feel tired, since this is due to a concentration of multiple colors that tire our eyes.

Once the time with a monitor has passed, it is important to calibrate or find a calibrator to adjust its color resolution again and return to its factory state.

There are people who use the monitor and are audiovisual professionals and the monitor has more potential but has a default basic configuration, they look for a calibrator to adjust the screen to the need. Always keep in mind that each monitor is different and not all programs or options will be of great help, so you will need to test which one best suits your screen.

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