What does the three cameras on a mobile phone mean?

In order to improve the imaging capabilities of smartphones, the best solution is to "off-camera" the rear camera, so we have seen the popularity of dual-camera mobile phones in various price ranges. At this time, it is the turn of mobile phones equipped with three (rear) cameras to appear, and Xiaomi 9 can be regarded as a typical representative of triple-camera mobile phones in 2019.

The first thing to know is that no matter how many shots are taken, the principle of taking pictures is the same for everyone. One main camera is responsible for framing, and the remaining secondary lenses are responsible for auxiliary imaging such as zooming or increasing the amount of light, color adjustment, or detail adjustment.

The more common multi-camera combinations on the market are achieved by adding new lenses on the basis of dual cameras. Let’s introduce the most common combinations of dual cameras, color + black and white combination, wide angle + telephoto combination. set of plans. Extended information

1. Color + black and white

The main advantage is that it can improve the image quality of mobile phones in dark light or at night. The advantage of black and white lenses is that there are no color filters, so the light transmission performance is stronger . When encountering night scenes or scenes with poor lighting.

Black and white lenses can help color lenses increase the amount of light entering, making photos clearer. If you take black and white photos with a black and white lens alone, you can get a better texture. This combination is relatively common on Huawei phones.

2. Wide angle + telephoto

In this combination, the main camera is responsible for imaging, and the secondary camera is responsible for measuring the depth of field. If you want to get closer to the subject, this combination can achieve optical zoom switching. Use a long-focus camera to achieve this. This combination is represented by apples.