Brief introduction of aperture adjustment method

1, the aperture is actually always open. When you press the shutter, the aperture will be reduced to the value you set on the camera. We often hear people say to open both the big aperture and the small aperture when taking pictures. So what are big aperture and small aperture? Let's take a portrait lens with a focal length of 5035mm as an example. The maximum aperture can be f 1.4. At this time, the camera has the largest amount of light, and the minimum aperture is f22. At this time, the amount of light entering the camera is the smallest. Everyone here knows that a large aperture represents the minimum F value of the aperture and a small aperture represents the maximum F value. We should remember that the size adjustment of the aperture is opposite to the set f value, and the large aperture is small and the small aperture is large. When we adjust the camera, we set the camera to manual mode. Press and hold the main dial, slide to the left to adjust the aperture to become larger, and slide to the right to adjust the aperture to become smaller.

2. What does the depth of field mean? Professional interpretation is too complicated, simply speaking, it is the clarity of the out-of-focus area when shooting. A large depth of field means that the out-of-focus area will show a clearer state, and a small (shallow) depth of field means that the accidentally focused area will show a more blurred state. The formula to remember is: the greater the depth of field, the clearer the focus and the worse the background blur effect. Small (shallow) depth of field, the more blurred the focus, the better the background blur effect. Let's look at the following two pictures. First of all, we shoot with a large aperture of f 1.7, and we can see that the area outside the focus is blurred. Secondly, we shoot with a small aperture of f22, and the area outside the focus is very clear. In this way, the relationship between aperture size and depth of field can be summarized. For large aperture, the smaller the f value, the smaller the depth of field and the more blurred the background. Small aperture, the greater the F value, the greater the depth of field and the clearer the background. Of course, controlling the depth of field is also related to other things. Only the influence of aperture is mentioned here.

3. When shooting with a large aperture, we will get a shallow depth of field background, which is very blurred. At this time, the amount of light entering the camera increases, so it is necessary to shoot with a high-speed shutter. When we shoot outdoors, because the background is particularly complicated and we want to highlight the main body of your photo, we need to shoot with a large aperture and a shallow depth of field. Suitable for shooting all kinds of portraits. For example, taking street portraits and landscape portraits. In addition, it is also a good choice to shoot still life with a large aperture. For example, bees and flowers photographed at macro.

4. When shooting with a small aperture, we will get a background with a large depth of field, and the background is very clear. At this time, the amount of light entering the camera decreases, and the shutter speed must be reduced to increase the amount of light entering. Because of the clear background obtained by small aperture shooting, we have to consider the composition and adjust each picture to the best shooting state. At this time, this small aperture is suitable for taking landscape photos and group photos, so that a clearer range can be obtained in the focus accident.

5. When shooting outdoors, people will inevitably appear. When taking outdoor photos, we can shoot with a large aperture, and the aperture value should be below f4. If the background is not so eye-catching, you can shoot with a small aperture. At this time, we should pay attention to the layering between the characters and the background, separate the characters from the scene, and the aperture value should be above f4. The specific adjustment size varies according to different cameras.

6. When shooting indoors, due to the lack of light, we have to turn on the flash or fill light to shoot. This is because we can choose a smaller aperture to shoot, so that the photos will be very clear and make them look very textured.

7. When taking a couple's wedding photo, two people take it together. We should try not to open the aperture to the maximum, so it is easy to shoot another person, blurred. At this time, it is best to shoot an aperture above 2.8 and get a blurred background. When shooting graduation photo, you should shoot with a small aperture. Generally, I shoot with an aperture of 7. 1 or above and a portrait with a fixed focus of 50 mm.

8. When shooting at night, because the light is too weak, we need to adjust the aperture to shoot. Use the front fill light at the same time. At this time, you will find that the background will be blurred into the bright light of the star class, which is very beautiful.

9. Different scenes have different aperture adjustment methods, so I won't elaborate too much here. The most important thing is to learn to understand the principle of aperture presentation and the relationship between depth of field. It will be easier to use when you understand the principle of everything thoroughly.