Can you take clear photos of people moving?

It is possible to adjust the aperture/shutter, but if you are using a fully automatic camera, it is difficult to say. Here is an article, I hope it will be useful to you.

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Dare to use large apertures and make good use of small apertures

Xu Hede

Aperture is one of the most important photographic elements in photographic creation. In addition to controlling the amount of light to meet exposure needs, it is also an important means to obtain specific artistic effects.

⒈The unity of opposites between large aperture and imaging quality. Generally speaking, the imaging quality at large apertures is relatively poor. However, the imaging quality at the maximum aperture of the new generation lens has been greatly improved. You can make full use of the imaging characteristics of large apertures to obtain distinctive images. Since the depth of field is small at this time, it is easy to clearly reflect a specific area while other parts are relatively blurred, highlighting the subject. When the illumination is poor, such as when shooting with a handheld camera, use a large aperture and a high-speed shutter to prevent camera shake from affecting image clarity. Some photographers rarely use the maximum aperture, usually only f5.6, f4. To give full play to the characteristics of a large aperture, you must dare to use the maximum aperture. For example, the aperture of a large-diameter standard lens can be fully used such as f1.8, f1.4 and other maximum apertures. Aperture, medium and telephoto lenses should dare to use the maximum aperture f2.8. At this time, it should be matched with the shooting distance and the distance between the background and the subject (the farther the distance between the background and the subject, the more obvious the blurred background effect formed by the large aperture, and vice versa. However), etc., the effect of the large aperture can be fully reflected. Perhaps the image quality taken at the maximum aperture is not as good as that at the medium aperture, but the loss in this regard is still worth it compared with the artistic effect obtained.

⒉Blur the background. When blurring the background, we usually choose a large aperture or telephoto lens. As for what is the appropriate aperture? In fact, except for telephoto lenses with a focal length of 200mm or even longer, the maximum aperture is usually used. When shooting with a standard lens, you may wish to choose the maximum aperture of f2.8 or even f1.4. Only in this way can you obtain a unique charm and truly clearly separate the subject from the background. Since the depth of field of digital cameras is relatively large, it is difficult for the subject to stand out if the maximum aperture is not used.

⒊Small aperture and long depth of field. Using a small aperture to obtain a large depth of field is a method often used when shooting landscape films, but this must be combined with factors such as the focal length of the lens and the shooting distance. If you use a telephoto lens, when the shooting distance is 2-3 meters, even if you use the f32 aperture, you will not get a large depth of field. In other words, as long as both the subject and the background are at infinity, there will be a great depth of field even with a wide aperture.

⒋Aperture size varies depending on the subject matter. In portrait photography, large apertures are often used, while in landscape photography, there are more opportunities to use small apertures. When shooting streams, in order to express the movement of flowing water, you need to use a slow speed of 1/8-1/2 seconds. Failure to use a small aperture will inevitably lead to overexposure; when shooting waves and boat shadows against the light, use a small aperture such as f22 or f32. , the small waves on the water surface will produce an effect similar to adding a starlight mirror; when shooting fireworks and other subjects, since it requires an exposure time of 1/2 second to 1 second to perfectly express the shape of the fireworks, it is also necessary to choose a small aperture.

⒌Small aperture should be used with a tripod. When shooting still life scenery and other subjects, a small aperture is used, which requires relatively high image clarity. Use f22 aperture under medium illumination, and the shutter speed is usually about 1/30 second. Without a tripod, shooting with a handheld camera will often affect the clarity due to factors such as camera shake and human physiological movement. Therefore, use a small aperture when the illumination is low. , make full use of various supports and hold the camera reasonably. If you use a digital camera, you can increase the sensitivity to remedy the problem.