Alas, have you encountered this situation? The newly purchased computer screen always feels dazzling when I look at it. After adjusting the brightness for a long time, my eyes still feel sore and swollen. What’s even more annoying is that sometimes the parameters look quite high, but the color is actually wrong! Let’s talk about this big problem today - where should the computer LED electronic screen be placed? How to adjust?

1. Screen position determines life and death: Three golden rules

​​The first rule: Vertical height should be consistent with the temper of the neck​​
What do you think? 80% of cervical spondylosis are caused by abnormal screen height! ​ ​The top of the screen should be level with the eyes​ ​, so that your neck doesn't have to be raised or lowered. Take a book under the monitor and try it. You will come back in half an hour to thank me.

​​The second rule: Distance produces beauty is not nonsense​​
No matter how big the screen is,​ ​50-70 cm is the life-saving distance​ ​. To give a real example: If a 32-inch screen is used at a distance of 40 cm, it is not uncommon for melanopia to rise by 100 degrees in three months.

​​The third rule: Ambient light should be a "third party" to guard against​​
The fluorescent lights above your head and the sun outside the window are all eye-catching with the screen! ​ ​The ambient light illuminance is recommended to be controlled at 300-500 lux​ ​, if it is too bright, the reflection is damaged by the eyes, if it is too dark, the pupils are more tiring. Buying a light meter that costs dozens of yuan is much more useful than drinking wolfberry water pipes.

2. Parameter adjustment to prevent mine-streeting: a must-see four-piece set for beginners

​​1. Don't be as bright as the wind​​
Those who teach you "brightness is full" are all pits! ​ ​Indoor use recommended starting at 120cd/m²​ ​, if you are designing, you have to have a color calculator. I have seen someone put 400cd/m² outdoor screen in the office. What a good guy, it looks like he has turned on the searchlight.

​​2. The refresh rate must be calculated​​
​​1920Hz is the industry's conscience line​ ​, a screen below this number will make you feel dizzy after watching it for a long time. But don’t be fooled by merchants – some of the nominal 3840Hz are actually fake numbers calculated by interpolation frames!

​​3. The color temperature follows the biological clock​​
Use 6500K cold white light to refresh yourself at 9 am, and cut to 4000K warm yellow light to help sleep at 8 pm. This trick is more effective than the anti-blue light film. A programmer personally tested it for half a year, and the number of dry eye attacks was 70% less.

​​4. Don't move gamma values​​
Newbie must not touch this advanced setting! I have seen someone adjust the gamma value from 2.2 to 1.8, but the design drawings were printed and the whole color changed. Party A almost smashed his office.

3. Hardware purchasing secrets: These parameters hide the tricks

When buying a screen, sales were so scattered? Watch these three indicators:

• ​​Contrast dynamic​ ​: Static contrast ratio 100000:1 is not as real as dynamic 3000:1
• ​​Color gamut coverage depends on actual measurement​ ​: 130%sRGB sounds great, but in fact, it may not even be 90%
• ​​Response time depends on grayscale​ ​: 1ms MPRT response may actually be 8ms GTG

Last year, a sucker bought a "e-sports screen" for 8,000 yuan. However, he still played FPS games and saw that the driver board was in stock five years ago. So,​ ​It depends on the manufacturer's technical white paper​ ​, don’t just watch advertisements and blow them so mysteriously.

4. Your Q&A session

​​Q: Is it true that PWM dimming damages the eyes on the Internet? ​ ​
A: There are two things to say about this. ​ ​High frequency PWM (>3000Hz) is actually more eye-protective than DC dimming​ ​, but the 200Hz low-frequency PWM used in low-priced screens is indeed a vision killer. I will teach you a trick: turn on the phone camera and aim it at the screen, and if there are flashing stripes, you should retreat quickly!

​​Q: What is the difference between HDR400 and HDR600? ​ ​
A: The numbers are more than the ones that are bad! The peak brightness of HDR400 is 400cd/m², and the HDR600 must reach 600 and must be backlit in partition. But I have to say,​ ​HDR without 1000cd/m² is all rogue​ ​, it's better to turn off this function to save power.

​​Q: Is the curved screen suitable for office work? ​ ​
A: This matter is divided into people! If you process Excel tables all day long, it is easier to read serial screens. But if you do video editing, the 1500R curvature screen can turn 30% less, which is effective in personal testing.

The editor slapped his thighs and said

I have been in the display industry for more than ten years and have seen too many people spend money in vain. I want to say it​ ​Choosing a screen is like finding a partner - the best one is the best​ ​. Finally, I will give you a winning trick: bring your own USB flash drive, save a few frequently viewed documents, pictures, and videos, and compare the effects on site in the physical store. Only when your eyes are comfortable can your wallet be avoided, right?

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