What do lens focus and zoom mean?

Lens focusing refers to adjusting the camera or camera lens to make a specific area in the picture clearer and sharper. By changing the focal length of the lens, you can adjust the appropriate dimming, color and contrast to make the picture more realistic. The purpose of lens focus is to focus on conveying the characteristics of a certain picture element, thereby guiding the audience's gaze to better understand the storyline or to gain a deeper understanding of the details.

Zooming refers to the process of changing the size of the lens' field of view by adjusting the focal length of the lens. Compared with changing the shooting position of the camera, the advantage of zoom is that it can capture the same target from different viewing angles, saving the time and cost required for shooting. In film and television production, lens zoom can be used to emphasize the movement of picture elements, express the emotional changes of characters, or enhance the atmosphere of a specific scene.

Focus and zoom technology are indispensable tools in photography and filmmaking. In stage plays or advertising shoots, lens focus can focus the audience's attention on a certain element, visually present a product or express emotions, thereby improving the advertising effect. In film production, zooming can be used to achieve smooth transitions between images, producing stronger visual effects and allowing the audience to be more immersed in the storyline. Focus and zoom are technically indispensable means of improving the quality of photography and filmmaking.