How to evaluate Yu Chengdong said that the effect of 100 million pixels is not as good as the large

This is not true, it is the imaging unit of the camera that determines the number of pixels in the camera, which is often referred to as the CCD or CMOS sensor. Pixel size and sensor size are two parameters, how to compare?

Is this a bit self-defeating and boastful, and a bit contradictory?

It's like your name is Zhang San, and your nickname is Xiao Zhang, one day Yu Chengdong heard others praising Xiao Zhang for being particularly good, and then Yu Chengdong said, what you said about Xiao Zhang is not good, Zhang San is much better than him, this is not a contradiction, it can be understood that the pixel must be the higher the better, the sensor size must be the bigger the better, the same painter, painting apples on A3 paper and drawing apples on A4 paper, it must be that A3 paper is relatively large, and you can draw more delicately.

If the two parameters are different, there is no way to compare them like this, but it can only be said that the high pixel has the ability to shoot more clearly, but it is greatly affected by the light environment and is prone to noise; In the case of outsole sensors, in low-light conditions, they are better than small-bottom sensors.

The above is purely a personal opinion, Yu Chengdong is a typical boast of the advantages of his own products and belittles the advantages of others, but the key is that the two are not on the same channel, it is a bit funny, just like saying "His legs are not as long as my belly", the two of you compare weight, you say so, we still don't know which of you is heavier.

The jargon in the photographic equipment industry is "the bottom is the first level to crush people". No matter how high the pixel of the mobile phone is, but the area of the sensor sensor is so small, the picture that comes out still cannot be compared with the camera.

In layman's terms, the factors that determine the image quality are not only the accumulation of pixels, but also the combination of color, noise, tolerance, detail, white balance, and other imaging. Is 100 million pixels bullish or not? It's really good, but stacking so many pixels on a sensor as small as a mobile phone, the diffraction of light, the interference of pixels, and the noise caused by heating will cause a serious decline in image quality, so it's really not like I can cover up the past with high resolution.

Of course, Xiaomi knows these problems, so they have done a lot of algorithm processing in the later stage of 100 million pixels, so that you can see that it is okay**, and you think that you see a lot of details, in fact, they are the effect of algorithm synthesis. If your phone is capable of shooting in RAW format, you can import it to your computer to see how bad the original image quality is.

In addition, the larger the base of the chip, the more prominent the softening effect of depth of field, and the background that melts away like cream is an image that can never be achieved in mobile photography. Now it is also simulated by algorithms, but the actual effect is far from the same.

So I think the debate on whether the image quality of mobile phones can be compared with cameras and SLRs? My answer is meaningless, completely incomparable. Mobile phones have their own advantages, such as Xiaomi, Huawei and other manufacturers, although they are secretly changing the concept and boasting about themselves, they are also constantly improving the algorithm to make the direct picture quality closer to the SLR camera.

Therefore, we should be more concerned about algorithm progress to bring us a better shooting experience, rather than engaging in pointless arguments.

This is the first time he fell in love, and then the first time he and her boyfriend couldn't forget it, and he couldn't forget it in his heart, so he would leave that feeling.

A panorama is the sum of several small panoramas. For example, if you add up to 5 panoramas, a panorama is the sum of several kilobytes to reach hundreds of millions of pixels.

This is indeed the case, the resolution of the outsole image sensor is high, and the effect of shooting is better than the effect of 100 million pixels, and the overall effect is better than the effect of 100 million pixels, and the effect of 100 million pixels is indeed not as good as the effect of the outsole image sensor.

The effect of 100 million pixels is not as good as the large pixel sensing, and it is true, the image resolution of the large pixel sensor is high, and the effect is much stronger than that of simple pixels.

Pixels are equivalent to paper, and how many pixels are equivalent to the size of the paper. The content on the paper is a different matter, a newspaper of the same size, one is coated paper color printing, and the other is a black and white manuscript of yellow slag; The same real-life sketch content, some people painted colorful and wonderful on it, and elementary school students briefly scribbled impressionistic watercolors on it.

It's common sense that pixels don't determine how good or bad an image is!

What Yu Chengdong said is this kind of common sense! Hasselblad two cameras, hundreds of thousands of units, pixels are far from 100 million, and with the same amount of money, you can buy more than 100 mobile phones with 100 million pixels of Xiaomi.

Sony just launched the A7SII mirrorless camera, the official website price is 23999 yuan (July 28, 2020, you read that right, this is the **), but it is only 12.1 million pixels, just from the pixel point of view, far lower than Xiaomi's 100 million pixels! Its imaging quality can throw off Xiaomi 100 million pixel mobile phones a thousand streets!

This is the SLR in the cross-sectional is not as good as the full frame, the full width is not as good as the medium frame, the larger the sensor, the better the imaging must be, a meaning.

Now it's all calculated pixels.

Pixels, light sensors, lenses all affect image quality.

A phone sensor is also able to identify which sensors are supported by the phone's hardware and provide sensing tools that play an important role in our daily lives.

The distance sensor consists of an infrared LED light and an infrared radiation light detector, located near the earpiece of the mobile phone, when we are connected, the distance sensor knows that the user is on**, and then will turn off the display screen to prevent the user from affecting the call due to misoperation. As for the light sensor that can detect the brightness of the environment, the software can use the data from the light sensor to automatically adjust the brightness of the display, when we play with the phone at night, the sensor will sense the changes in the surrounding environment, so the brightness of the display will be lowered accordingly.

The main function of the GPS position sensor is to receive the coordinate information of the satellite through the antenna to help the user position, and the principle behind it is not only applied to mobile phones, but also has a wide range of applications in all positioning devices.

The application of barometric haptics is relatively niche, and changes in air pressure can lead to changes in the measured value of resistance or capacitance. Generally, GPS can calculate your location, but for some changes in altitude, you need a barometric pressure sensor to measure, in addition, in some outdoor applications when you need to measure the barometric pressure value, at this time a mobile phone with a barometric pressure sensor can also come in handy. The heart rate sensor is more common in wearable settings, but the application on mobile phones is generally set on the back of the mobile phone, and its principle is to convert the corresponding data by illuminating the finger with a high-brightness LED light source to measure the heart rate.

There are mainly distance sensors, light sensors, and gravity sensors.

The proximity sensor detects the distance between the user's face and the screen to prevent the user's face from touching the screen during the answer.

The light sensor detects the intensity of ambient light and decides whether to turn on the keyboard light and screen backlight.

What is a sensor, many of them can be called sensors, for example: the receiver of the mobile phone is an audio signal collection sensor, the CMOS of the camera is an image sensor, and the antenna is a high-frequency signal collection sensor

There's a lot more, and I can't send the answers.

It's a mobile sensor. Sensing temperature or sound.

Common sensors in smartphones are:

1-gravitational accelerometer;

2-a light-sensitive sensor;

3- CCD or CMOS sensor of the camera;

4-GPS receiver sensor;

5-magnetic sensor;

6-acoustic sensor;

7-temperature sensor;

That's about it.

1- Test the front and back of the phone in order to rotate the screen;

2- Test whether the mobile phone opens the cover or the ear is close to the microphone and the black screen saves power;

3 - for photographic use;

4- Used for the test of the earth's position, with the map can know the location;

5 - compass, indicating direction;

6- Detect the ambient sound and adjust the volume of the earpiece;

7- If the temperature of the mobile phone is too high, it will automatically turn off to protect the mobile phone [such as direct sunlight, it will automatically turn off].

Mobile phones are an electronic product that modern people can't live without, which is also because it is becoming more and more powerful and can solve all things in life, so it also increases people's dependence on mobile phones. Today, let's take stock of the sensors in mobile phones, everything is a high-tech product, and many people don't know about it.

Professional rugged mobile phones, ordinary smart phones will not be placed with a lot of sensors if they are not for functional needs, and they consume more power.

Light sensor, distance sensor, gyroscope, gravity sensor, temperature sensor, electronic compass, some mobile phones also have infrared, some high-end mobile phones also have pressure sensitivity, rainbow magic, etc. If my answer is helpful to you, please remember to adopt it, thank you!

There are a lot of sensors on mobile phones. Numbers, TV, etc.

Common sensors in smartphones are: 1-Gravity acceleration sensor; 2-a light-sensitive sensor; 3- CCD or CMOS sensor of the camera; 4-GPS receiver sensor; 5-magnetic sensor; 6-acoustic sensor; 7-temperature sensor; That's about it. 1- Test the front and back of the phone in order to rotate the screen; 2- Test whether the mobile phone opens the cover or the ear is close to the microphone and the black screen saves power; 3 - for photographic use; 4- Used for the test of the earth's position, with the map can know the location; 5 - compass, indicating direction; 6- Detect the ambient sound and adjust the volume of the earpiece; 7- If the temperature of the mobile phone is too high, it will automatically turn off to protect the mobile phone [such as direct sunlight, it will automatically turn off].

With the advancement of technology, the mobile phone is no longer a simple communication tool, but a portable electronic device with comprehensive functions. Mobile phonesThe virtual functions, such as interaction and games, are realized through the powerful computing power of the processor, but the functions combined with reality are realized through sensors.

Gravity sensor

Principle:Using the piezoelectric effect, a heavy object inside the sensor and a piezoelectric sheet are integrated together, and the horizontal direction is calculated by the voltage generated in the orthogonal two directions.

Usage:Smart switching of horizontal and vertical screens of mobile phones, photo ** orientation, gravity sensing games (such as rolling steel balls).

Accelerometers

Principle:Same as gravity sensors, it is also a piezoelectric effect, which determines the direction of acceleration in three dimensions, but with less power consumption and lower accuracy.

Usage:Step counting and mobile phone placement at an angle.

Magnetic field sensors

Principle:Anisotropic magnetostrictive materials will cause changes in their own resistance when they feel a weak change in the magnetic field, so the mobile phone needs to be rotated or shaken a few times to accurately indicate the direction.

gps

Principle:There are 24 GPS satellites operating in a specific orbit around the Earth, each of which broadcasts its current position coordinates and timestamp information to the world at all times. The mobile phone GPS module receives this information through the antenna.

The chip in the GPS module calculates the distance between the satellite and the mobile phone according to the instantaneous position of the satellite moving at high speed as the known starting data, and calculates the distance between the satellite and the mobile phone according to the time difference between the time stamp of the satellite transmitting coordinates and the time difference when it is received, and determines the position coordinates of the point to be measured by the method of intersection behind the space distance.

Usage:Maps, navigation, speed measurement, ranging.

The more common mobile phone sensors are as follows:

Light sensor: Change the brightness of the screen according to the strength of the light.

Proximity sensor (proximity sensor): When the earpiece is attached to the ear during a call, the screen will go black to avoid misoperation, and the screen will light up again when you leave the ear.

Gravity sensor: rotates according to the direction of the screen, and the temperature sensor moves left and right in the game: used to monitor the temperature of the mobile phone's battery and the temperature of the CPU, and the temperature will automatically shut down when the temperature is abnormal.

Humidity sensor: weather forecast.

Barometric pressure sensor: detects and measures altitude.

Sound sensor: Siri, voice-activated**.

Image sensor: Automatically recognizes the face for unlocking.

Fingerprint sensor: Fingerprint unlock.

There are many sensors in a mobile phone, after all, the function of the mobile phone determines the number of sensors.

There are various sensors, not only somatosensory sensors, but also light sensors, sound sensors.

There are a lot of sensors in a mobile phone, because he needs to be responsible for different modules to complete different functions.

There must be a lot of them, because the phone is so small, and it definitely needs the help of sensors to have so many functions.

I know that there is light sensing, gravity sensing, fingerprint sensing, sound sensor, picture sensing. Touchscreen sensing.

There are gravity sensors, acceleration sensors, magnetic field sensors.

There's light sensors, infrared sensors, and gravity sensors, and there's a lot of sensors.

In short, there are too many, face recognition, sound and many other sensing devices.

There are a lot of these, the screen is the largest sensor, and other internal structures are also available.

Distance sensors are also called displacement sensors.

The proximity sensor is generally on both sides of the mobile phone earpiece or in the groove of the mobile phone earpiece, which is convenient for its work. When the user answers or dials **, put the mobile phone close to the head, and the distance between the distance sensor can be measured to a certain extent, then notify the screen background light to go out, and turn on the background light again when taking it away, which is more convenient for the user to operate and more power-saving.