Why is the size of the 4:3 ratio of the iPhone not 4:3 when taking photos?

Because the camera settings of your mobile phone are incorrect. After turning on the camera function of your Apple phone, you can see that there are several settings. All photos must be adjusted to a 4:3 ratio to get the photo you ultimately want to set, especially the main camera settings.

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1. Currently, there are three most widely used screen ratios for mobile phone photography, namely: 16:9, 4:3, and 1:1. Everyone has them. Mobile phones basically default to 16:9, and some manufacturers and digital cameras will default to 4:3. These two default ratios are generally because the size ratio of the device's image sensor is basically these two specifications. On the other hand, the hardware The manufacturer has preset the default aspect ratio in the factory settings, making it convenient for most users to pick up the device and use it directly. In fact, it doesn’t matter to us users, because we can adjust the screen ratio ourselves. As long as we make the composition and ideas in our minds in advance, and make good use of different screen ratios, we can also shoot our own masterpieces.

2. If the first impression of 16:9 is that of relaxation and joy, then the 4:3 picture conveys a relatively stable picture to the viewer. Many photographers who use cameras prefer 4: 3 format ratio, because the 4:3 format is actually easy to crop in later stages. Whether it is 16:9 or 1:1, it leaves a lot of room for later stages, so it is very popular among photographers. Moreover, the 4:3 ratio is closer to the size ratio of A4 or B5 size printing photo paper, so there will be no waste of photo paper for later output printing. This aspect ratio is more suitable for shooting atmospheric portraits and humanities sketches.