The function of a lens with aperture adjustment

           Aperture adjustment lens is a special type of camera lens that adjusts the size of the aperture to control the amount of light entering the camera, thereby controlling the depth of field effect and brightness of the photo. Depth of field refers to the depth within which the subject is clearly visible in a photograph. A large aperture can bring a shallower depth of field, making the focal area stand out clearly while the background is blurred. In drone aerial photography, due to the instability of aviation equipment, a shallower depth of field can help the photographer highlight the subject and make it more prominent. On the contrary, a small aperture can bring a deeper depth of field, allowing more areas to be presented clearly. This helps to obtain more details and clarity in shooting scenes such as urban landscapes.

           The aperture size of a lens can be adjusted manually or automatically. Manual adjustment is achieved by rotating the aperture ring on the lens, while automatic adjustment is achieved through the camera's internal automatic aperture control system. In manual adjustment, photographers can choose the appropriate aperture value based on the shooting scene and needs to achieve better shooting results. For example, when shooting landscapes, an aperture of F8-11 is generally suitable to obtain clear images and rich details. When shooting portraits, aperture priority mode is usually used, which can control the depth of field by adjusting the aperture size to make the character more prominent.

              Automatic adjustment is achieved through the camera's internal automatic aperture control system. The camera can automatically adjust the aperture size according to the shooting scene and requirements to achieve the best shooting effect. For example, when shooting motion scenes, the camera can automatically adjust the aperture size to achieve a faster shutter speed, thereby capturing the moment of motion.

              The aperture size of the aperture adjustment lens can also affect the brightness of the photo. A large aperture can bring a shallower depth of field while also providing higher brightness. In low light environments, a large aperture can help photographers obtain sufficient light to take clear photos. A small aperture can bring a deeper depth of field and lower brightness. In high light environments, a small aperture can help photographers control the light and avoid overexposure, resulting in more realistic photos.

              In short, aperture adjustment lens is a very important camera lens, whose function is to control the depth of field effect and brightness of the photo by adjusting the size of the aperture and controlling the amount of light entering the camera. Choosing the appropriate aperture value can achieve better shooting results in different shooting scenarios and requirements. At the same time, the aperture size of the aperture adjustment lens can also affect the brightness of the photo. A large aperture can bring higher brightness, while a small aperture can bring lower brightness. When using aperture adjustment lenses, photographers need to choose the appropriate aperture value based on the shooting scene and requirements, and pay attention to the impact on exposure to achieve the best shooting effect.