Mobile phones have entered the era of 100 million pixels. The higher the pixel, the clearer the photo?

Pixels are made up of small squares in an image. These small squares have a definite position and assigned color value. The color and position of the small squares determine the appearance of the image. A pixel can be thought of as an indivisible unit or element in the entire image. Indivisible means that it cannot be cut into smaller units or elements, it exists as a single color grid. Each bitmap contains a certain number of pixels that determine the size of the image on the screen.

What is a “pixel”

Every photo we see is actually composed of “color points”, and each color point can also be called a pixel. If you zoom in on a photo infinitely, you will find that the photo has become a small grid of different colors, and these small grids are the smallest unit “pixels” that constitute an image. A picture consists of hundreds of thousands of color points, so the pixels of this picture are hundreds of thousands.

But as we usually say, the pixels in cameras and mobile phones refer to the single Electronic components on the sensors of cameras and mobile phones that sense light and perform imaging. For example: For example, a camera with 1 million photosensitive devices is a 1-megapixel camera, a camera with 40 million photosensitive devices is also a 40-megapixel camera, and so on…

There are already many 100-megapixel mobile phones on the market, but the full-frame camera A7S III released by Sony in July 2020 has only 12.1 million pixels. Do you know why?

For the pixel, many people may not understand its true meaning, thinking that the higher the pixel, the clearer the photo.

The image in photography is made up of pixels, which is similar to the example in Figure 2. But the pixel density will be much greater, so the photos we see will not see pixels. In this sense, the greater the pixel density, the more detailed the displayed image will be.

The most intuitive manifestation of the number of pixels is the size of the photo. For example, a 3:2 format of 24 million pixels means that the size of the photo is 6000×4000. If you need to print out a photo, define the print resolution as 300 pixels/inch , then you can print a 20×13.3-inch photo.

I have to admit that the functions of mobile phone cameras are getting more and more powerful, the hardware specifications are getting higher and higher, and the pixel value has even reached more than 100 million! The imaging effect is amazing. But on the other hand, the vast majority of professionals and photography enthusiasts will agree that the camera performance of a mobile phone is no better than that of a DSLR. For example, the Xiaomi Mi 11/10 with 100 million pixels, the imaging level is indeed not as good as the entry-level SLR with 24 million pixels. Why is this?

Mobile phones have entered the era of 100 million pixels. The higher the pixel, the clearer the photo?

For a camera, what parts are the most important? As the so-called “bottom level crushes people”, the “bottom” here refers to the CMOS sensor. The larger the size of the CMOS sensor, the greater the amount of light entering the camera. The color of the photos taken is more delicate. Due to the limited size, the sensor size of the mobile phone is destined to be small, while the size of the SLR camera is relatively large, and the internal space is quite generous, which can accommodate the larger size sensor.

Because of this, we will find that even ordinary SLR cameras can take more detailed photos than top flagship phones. In addition, SLR cameras can crush mobile phones in terms of color resolution, latitude, depth of field control, etc., which leads mobile phone manufacturers to seek solutions only in software algorithms, which are post-P pictures.

In recent years, we can see that the camera of the smartphone can be said to have started a “digital race”, from only 110,000 pixels at the beginning to the level of one million to ten million, and even some have exceeded 100 million. pixel mark.

In addition, high-pixel photos can be synthesized by combining multiple pixels, which can effectively reduce the impact of single-pixel noise on the overall photo, thereby further improving the purity and details of the entire picture. The most important thing is that high pixels can provide better resolution, which can bring better secondary creation performance. So I think that high pixel is very important.

Before Honor was independent, Huawei also distributed the advanced 50 million lens to the Honor flagship. For example, the Honor 30 pro+ once won the top three results on DXOmark, and the camera strength was unanimously affirmed, such as Honor 30, Honor V40, etc., also They all use 40MP or 50MP lenses, and have never used 100 million pixels. Now the new Honor 50 series will bring 100 million pixel lenses, which is contrary to the previous view of “100 million pixels in the wrong direction”, no wonder At this time, Mr. Lu’s post “connotation” is honored, and the old things are re-examined to slap friends and businessmen. Some people say that the layout is too small, and some people say that they want to take revenge with a single arrow.

For a 100-megapixel mobile phone, the author’s understanding is this. This CMOS itself is fine. The high pixel size and large sensor size mean that it can bring better viewing quality, but it needs a powerful processor as support. The CPU can’t take a 100-megapixel lens. For example, the Xiaomi CC9 Pro took a detour with 100 million pixels, and the experience is not as good as that of a 40-megapixel mobile phone. Later, after the Xiaomi Mi 10 and Samsung S20 ultra were equipped with 100 million pixels, the software and hardware optimization were done very well, and the pictures taken were delicate and clear. Therefore, the Honor 50 Pro will use a 100-megapixel lens, which I think is a good thing, and the shortcomings of the camera have been filled.

To drive a 100-megapixel mobile phone, a powerful processor is essential. The redmi note9 pro is equipped with a Snapdragon 750G chip, based on the new A77CPU core, which can process 100-megapixel photos effortlessly, and can open games smoothly at the same time. Software, the overall experience is still very good. As for whether the direction of 100 million pixels is wrong, this topic has come to an end. As long as the photos taken are good, no matter whether it is 12 million pixels or 100 million pixels, it is a good mobile phone.

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