Recently, many small partners around asked me to display those who do not understand the mysterious parameters in the end represents what is the meaning of the choice of monitor, the monitor how to look at those very common parameters of the indicators. So the current DIY old driver Before gathering the knowledge point, simply talk about those parameters of the monitor.
In fact, when we choose to monitor the general exposure is the size, resolution, color gamut.But if more finer professional, we will also be exposed to the monitor's gamma, bit and other high-order parameters, then these parameters What are some of what, when we choose the monitor should be how to choose?
Let's begin with a relatively simple one.
The basic three elements of the monitor
size
Screen size is in inches per inch, and this refers to the length of the diagonal screen, so the same size with different proportions of the screen area is not the same. There are size units, this must not be mistaken, many of us are writing screen size or used in everyday spoken language, but this is actually non-compliance, there are many places because businesses use 'inch' to promote publicity indemnity.
Resolution
About resolution, we all know, the monitor is through a pixel of the picture and text display, Xiao Jin students here to do a simple display and use pixels (respectively up to 30 x 23, do not believe you can The number of) the display has been filled, each pixel can show the color we want, the higher the resolution, the more delicate the display.
However, when we select the monitor, but also need to choose according to the size of the monitor, the small size of the monitor to choose low resolution is also okay, after all, the same resolution with the higher the price the more expensive, the small personal recommendation is less than 24 In fact, 1080P is enough, and if you choose 24K and above, the resolution of 2K will be less granular. (For general purposes, there are other professional needs according to the specific requirements.)
And resolution-related as well Pixel density and pitch (the distance between two adjacent pixels) , Which in fact can literally be well understood, here do not do too much.
Color gamut
About the display color gamut, there are currently three common standards:
1, NTSC , A standard that the National Television Standards Committee (CTSC) made in 1953 as a standard that is currently not well-suited for today's displays and is therefore almost negligible.
2, sRGB , Which is a standard set by Microsoft in 1997 and is by far the most common standard.
3, Adobe RGB Obviously, this is a standard set by Adobe in 1998. It mainly adds CMYK color gamut to sRGB, which means it improves the coverage of the turquoise.
From a standard point of view: Adobe RGB is superior to sRGB over NTSC. However, Adobe RGB> NTSC> sRGB from the theoretical gamut.
However, important but different software support different standards, such as: Google's Chrome only supports sRGB, and no color management capabilities; Safari has a complete color management capabilities; IE also supports only sRGB, But it has some color management features.
But do not worry, the sRGB standard that we generally use is already the upper limit of our use, and then the standard is not too much for our average consumer.
Well, the basic three elements of the monitor was finished, the demand for choice here to fork. Take the color professional and gaming games have always been a simple chat Well, monitors and other special areas of medical breakdown here do not talk.
Gaming game to
About gaming games, more attention is the monitor refresh rate and response time.As the players for the visual information to accept and respond generally will be higher than our average consumer, and even our ordinary consumers, 'eat chicken 'Wait for the monitor response time and refresh rate higher requirements of the game will feel the difference.
Refresh rate
We generally use the monitor refresh rate of 60Hz, 60 seconds a second can refresh the screen, is enough for everyday use.Electronic display monitor 144Hz is actually fierce operation support for the game, so eSports player will choose a high refresh Rate the monitor as your own gear.
In terms of refresh rate, the 144Hz display is more than twice as fast as the 60Hz display, but the performance boost from 60Hz to 144Hz is large, but the experience boost is not as pronounced as 30Hz to 60Hz, which is why many people say 144Hz and 60Hz are indistinguishable One of the reasons, even led many people say that the human eye to see 30 frames is enough, 60 frames are very smooth, 144Hz simply useless.
Many people say that in fact, as long as 24 frames will be able to see the dynamic picture, high frame rate actually not much use.In fact, the correct argument is, 24 frames is the limit, 24 frames is the lower limit of the dynamic recognition of the naked eye, if the continuous picture below 24 frames, you will feel that you see is 'PPT', and if the frame rate is higher, the human eye will see the picture Smooth.
144Hz or higher refresh rate of the display does improve the performance of the game, if the refresh rate is slightly lower, it is likely that two adjacent operations may be arranged in the same frame screen display for the sensitive, there is a high game display It may be possible to compare displays that require higher refresh rates.
But if not e-sports enthusiasts, the continuity of the game screen is not very sensitive to the requirements, the general 60Hz or 75Hz will be enough to use.And generally gaming monitors because of the actual gaming performance, the price will be slightly more expensive.
Response time
In a long time ago, the response time was just the 'black-white-black' conversion time of the display. Now, the response time of the display is basically the Grey To Gray (GTG) response time.
When we play a game or watch a movie, the content of the screen can not just be the switch between the black and the white, but a colorful and colorful picture, or different levels of shades, all of which are converting gray scales.
In fact, the rate of liquid crystal molecule conversion and the angle of torsion are determined by the magnitude of the applied voltage.From all-black to all-white liquid crystal molecules facing the maximum torsion angle, a large voltage needs to be applied, and the liquid crystal molecule twists at a faster speed.
But involving different shades of gray-scale switching, difficult to achieve, and every day on the monitor to see all the images are the result of grayscale changes, so black and white response measurement has been unable to correctly express the actual Meaning, therefore, the concept of gray-scale response time complies.
So although both response time, but contains the meaning is not the same, but basically all said a piece of the screen response speed.
In theory:
5 ms = 1 / 0.005 = 200 frames per second 4 ms = 1 / 0.004 = 250 frames per second 2 ms = 1 / 0.002 = 500 frames per second 1 ms = 1 / 0.001 = Seconds display 1000 frames
(But as we all know, this is just theoretical data, in fact, the number of frames the display can display depends on the upper limit of the display refresh rate.)
Popular point that the response time can affect the length of the monitor screen transformation is crisp and crisp, whether the smear will be serious.For gamers, especially e-sports professionals, the display response time as natural as possible, so the current advertised The game monitor's response time is basically 2ms-5ms, while the high-end display at a basic 1ms. Stalling to improve the dynamic response of the screen and fluency.
We can see that both the refresh rate and the response time are shuffled into the picture, but in fact the difference between the two is that the refresh rate results in a smear on the human visual system and the response time is on the display panel 'Native' smear.
Color professional to
Basically we all know the three basic elements of the display, and refresh rate and response time we all know in recent years, manufacturers propaganda bombing 7788, but should not be too familiar with the color parameters to the parameters. Then we simply chat Talk about the color related to us Gamma and color depth (8bit, 10bit) What is it?
Gamma value
Often we see the monitor evaluation of small partners may often see the gamma value of the test chart, then what is the gamma value of what we are saying? Why do we want to choose the gamma value (γ) = 2.2 as us Standard?
The gamma value affects the tone of the middle of the graph or the gradation of the middle gradation.Adjusting the gamma value can change the brightness value of the middle tone gray scale of the image to increase the middle level of the image without changing the gradation of the dark part and the bright part Too much impact, which is actually a deep relationship with the color depth we are going to talk about next.
In this case, the gamma value is the relationship between color and brightness, the appropriate gamma value can have a better picture detail and better restore the real picture, reflected in the general feeling is whether the picture is too exposed, Brightness is too high, or too low when the screen color can not tell, there is no dark detail.
The gamma value = 2.2 how come? Is the visual adjustment in practice and finalized, there is no scientific calculation of what is obtained in practice, Microsoft and Hewlett-Packard in 1996 under the specific conditions of light to watch the test Monitor the feeling, they think, the 8-bit image of 128 gray (0.5 gray) This abstract, representing the eyes of the gray value corresponding to the white pixel 21.8% of the brightness displayed by the transition from black to white look It will be more uniform.
The final corresponding Gamma is 2.2. Then they set the standard, future generations of the hardware are all up to rely on, including taking pictures, the code Gamma also took 1 / 2.2 = 0.454. This will ensure that the entire encoding and decoding system Gamma is 1, high-fidelity, natural color values can be relatively intact on the screen reproduction.
Color depth
We can often see some of the display for the color field of professional marked 8bit / 10bit panel, that bit is what does it mean, how do we understand?
In fact, the bit represents the basic unit of computer binary, binary information is composed of 0 and 1, applied to the display is the same.
We assume that the small front of the display is a 1bit panel, said the display pixels can only identify a bit of information, then the pixel can show the information is '1' or '0', then the pixel can display 2 (2 ^ 1) colors.
And we assume that a small display to do when the 2bit panel, said the display pixel can only identify a bit of information, then the pixel can show the information is '00' '01' '10' and '11' four, Then this pixel can display 4 (2 ^ 2) colors.
And so on, if the display is 8bit panel will be able to display 2 ^ 8 = 256 colors, but each pixel is RGB color composition, so 8bit will eventually be able to show 256 × 256 × 256 = 16777216 colors. You can figure it out for yourself.
Evaluation summary
In fact, the current choice of monitors is very transparent, as long as we can according to their own needs to rational choice, you can buy their own satisfied with the display, because of the iterative development of technology, the display below the current thousand dollars to meet the general consumer demand Hopefully, this article will help you better understand the monitor, so as to help you make more rational purchase of your monitor.
