What's the difference between12 megapixel mobile phone and12 megapixel camera?

In fact, the pixels (resolution) are the same, and the main difference is the size and imaging principle of each pixel.

The size of each pixel determines the photosensitivity, and the larger the pixel, the more light it can receive, so the higher the degree of reduction, the more limited the light it receives, so the effect is not as good as the larger the photosensitive material (that is, the larger the size, the better the photosensitivity).

Mobile phone lens is small, the size of photosensitive element is small, the light passing through it is small, and the light receiving area is small, so it is naturally not as good as camera.

In addition, the large lens focuses more accurately, so the definition is better.

In fact, improper camera imaging depends on pixels. In fact, the pixels of all kinds of mobile phones and cameras on the market are high enough to be displayed on most display devices (high pixels are also a waste, so the resolution of the display is so high), but the imaging effect (reduction degree) of the camera is better, so the picture quality is clearer and more realistic.

However, in recent years, mobile phone imaging has become better and better, and the gap with card cameras has been relatively small (high-end mobile phones), which is enough for taking pictures of ordinary life. If you are a reporter, photographer or something, you must buy a SLR camera.