How to adjust the focal length of Apple mobile phone?

? Drag two fingers like zooming in and out of a picture, and an adjustment status bar will appear.

Iphone comes with powerful camera and video functions. If you need to adjust the shooting distance in the new iphone to achieve the best effect, just use the holding gesture.

First, after taking a photo, use any two-finger gesture in the preview box to slide on the screen, and then an adjustment slider will appear. Drag the slider at the beginning of the red coil in the picture below or click the buttons on both sides to adjust the focal length.

Focusing, or focusing, refers to changing the image distance v, that is, changing the distance from the optical center of the lens to the plane of the substrate.

Focus adjustment: it is to adjust the focus (the distance between the so-called "focus" object and the image it forms). Camera, microscope, etc. Everyone has to adjust the focal length to form a clear image, so when you take a picture, you are in the focus of the camera, and it will be clearer when you take it.

The focal length is the same as that of the human eye. Digital cameras capture everything in the world through the lens. If the human eye has an error (myopia) in the focal length, it can't distinguish things correctly. As the lens of a digital camera, its most important characteristic is also the focal length of the lens.