What does the aperture of mobile phone camera mean?

Aperture is a device that the lens controls the amount of light entering the photosensitive element of the fuselage, which can be regarded as a round hole. Generally speaking, the aperture size is determined by the aperture and focal length of the lens. When the light passes through the lens, it shines on the CMOS photosensitive element through the aperture. Therefore, the larger the aperture of the lens, the more light enters through this aperture in unit time, the richer the information obtained by the photosensitive element, and the better the effect of the final photo.

The following figure illustrates the aperture of the mobile phone well.

Data expansion:

Influence of large aperture on mobile phone photography

Large aperture can not only bring greater depth of field and background blur effect, but also improve the shutter speed of the camera. The security shutter of handheld mobile phone is generally around 1/30 seconds. If it is lower than this speed, blur may appear even when shooting still objects. When shooting at night, in order to ensure the lowest shutter speed, the mobile phone will automatically increase the ISO sensitivity, resulting in a lot of noise on the screen.

If the aperture of the mobile phone is large enough, the more light CMOS can get at the same shutter speed. Conversely, a higher shutter speed can be used to prevent image jitter. Therefore, when shooting moving scenes or poor ambient light, a large aperture lens has more advantages than a small aperture lens. When shooting people's still lives, the large aperture can also bring the background blur effect close to SLR.