What are aperture priority and shutter priority?

① Aperture is preferred. The logo on Canon camera is Av, and that on Nikon camera is A. Aperture priority is a semi-automatic exposure mode, that is, the user chooses the aperture value of the lens and the camera decides the shutter value.

1 aperture priority mode, we only care about the choice of aperture. For example, in low light environment or when the background is blurred, we can set a large aperture value; In the sun or when you need a large depth of field, you can choose a small aperture. Compared with the automatic mode, the photographer not only has control over the photos, but also does not need to do complicated photometric work.

2. When using aperture priority, the shutter speed (or sensitivity) is determined by the camera. Photographers only consider the required aperture value, but don't forget to pay attention to whether the shutter speed meets the needs. For example, when shooting hand-held, you should pay attention to that the shutter speed should not be too low to avoid jitter and blur.

Second, the shutter takes precedence.

② Contrary to aperture priority, shutter priority means that the photographer chooses the shutter and the camera automatically determines the aperture value.

3. Shutter priority is mainly used for shooting scenes with clear requirements on shutter speed. For example, when taking sports photos, you need a high-speed shutter to freeze the movements of athletes; For example, it may take a long time for the shutter to show the dynamics of running water. At this time, the shutter needs to be strictly controlled, and the aperture is not important, so using shutter priority mode can greatly simplify the shooting work.

4. Similarly, in shutter priority mode, always pay attention to the change of aperture. If the shutter speed is too high and the aperture is not large enough (the camera will prompt you), you must fill the light or reduce the shutter speed.

Third, how to choose?

5. If shooting in low light environment, such as indoors and at night; Or take photos that need shallow depth of field, such as portraits. You should choose aperture priority mode.

6. When taking dynamic photos such as motion and running water, you need to use the shutter speed to present different effects. You should choose shutter priority mode at this time.

7. Under normal circumstances, if you shoot by hand, you can consider using the shutter priority mode and set the shutter speed above the safety shutter to ensure that there will be no jitter and blur.