Whether it is a designer who pays attention to color restoration, or a gamer who concentrates on the game experience, when choosing a monitor, they will pay attention to the parameter of color accuracy, but the publicity of some monitors is vague about color accuracy, and sometimes they will take their own blue light filters and eye protection, which also makes many players feel headaches.
Color accuracy, also known as chromatic aberration, measures the difference between the color presented by the display and the actual color, in other words, the accuracy of the display color displayed by the display. The color scale uses △E or Delta E as an indicator, and the smaller the value, the more accurate the color displayed.
In general, △E < 2 when the naked eye is almost unable to distinguish, and △E > 5 when there is a more obvious difference, so it is also a very important parameter for the user, especially for the color sensitive use environment.
Most of the professional design drawing displays require △E<2 color accuracy, the display △E value that pays attention to color performance is generally less than 4, and the △E value of ordinary monitors and laptops is usually between 3-6.
However, some users will find that the blue color deviation of many eye protection displays is greater when purchasing products, resulting in a high △E value of the display, is this normal? Or is it that the merchant has insufficient display performance in order to cover up the panel?
In fact, the display color accuracy deviation is large and the display light source is related, the current display generally uses LED as a backlight light source, and in the LED spectrum, blue light itself accounts for too large, manufacturers in the debugging time is indeed prone to problems.
But this is not to say that the filter blue display can not avoid color casts, if it is filtered at the software level, its working principle is to process the internal signal before imaging, filter blue light. This blue light filtering filters out blue light in all bands. After turning on the blue light filter mode, the display will turn yellow and the screen brightness will decrease, making the light softer and less dazzling.
The advantage of software filtering blue light is that the blue light filter function of some displays can be switched on and off at any time, and users can choose according to their needs, but the result of this is that they cannot enjoy high color reproduction performance in blue light filter mode.
The hardware blue light filter is processed on the LED lamp bead, reducing harmful blue light through the layer, so that the peak and peak of the blue light is moved from 430-450nm to the right to about 460nm, which can effectively reduce the blue light intensity in the range of 400-450nm. This hardware-based approach can filter out harmful blue light while keeping the picture from being deflected.
So how should you choose as a consumer? If the budget is limited, but the color reproduction requirements are not so high, you can choose a product with software blue light filtering, turn on the blue light filter function when there is a need for blue light filtering, turn off when high color is needed, if it is a professional user who performs design and drawing, and a gamer with a sufficient budget, it is still recommended to choose a monitor that filters blue light from the hardware level.
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