The difference between shutter priority and aperture priority

In our daily use of SLR cameras, there are usually two choices: aperture priority AV and shutter priority TV. What's the difference between shutter priority and aperture priority? Let's take a look together ~

What's the difference between shutter priority and aperture priority? Aperture priority is to manually adjust the aperture, manually set the aperture, and the camera will set it for you, which is suitable for still life shooting. Shutter priority is to manually adjust the shutter and set the shutter speed manually. Other settings are set by the camera for you, which is suitable for dynamic shooting.

Aperture priority refers to the exposure value calculated by the automatic metering system of the machine, and then automatically decides how many shutters to use according to the aperture size you choose.

Shutter priority means that the exposure value is calculated by the automatic metering system of the machine, and then the aperture is automatically determined according to the shutter speed you choose.

In short, aperture priority means manual adjustment of aperture, and shutter priority means manual adjustment of shutter.

Aperture priority: AV and a files.

Shutter priority: Canon, Pentax shutter priority is TV, Nikon is S.

1. Aperture priority AV is more suitable for photography (static) that pays attention to the depth of field effect.

Aperture priority is to manually define the aperture size, and the camera will decide the shutter speed according to this aperture value. Because the aperture directly affects the depth of field, this mode is most widely used in ordinary shooting. When shooting portraits, we usually use large aperture and long focal length to blur the background and get a shallow depth of field, which can highlight the subject. At the same time, a larger aperture can also obtain a faster shutter value, thus improving the stability of hand-held shooting.

When taking photos such as scenery, we often use a smaller aperture value, so that the range of depth of field is wider, which can make the distant and nearby scenery clear, which is also applicable when shooting night scenes.

Second, the shutter priority TV is suitable for photography (dynamic) that needs to control the shutter.

High-speed shutter can be used to focus light, and slow shutter can be used to turn moving vehicles into light beams. The silky water flow effect in ordinary photos can only be taken with a slow shutter. Shutter priority is mostly used to shoot moving objects, such as sports, moving vehicles, waterfalls, flying objects, fireworks, water droplets and so on.

Many friends find that when shooting moving objects, the subject is often blurred, mostly because the shutter speed is not fast enough. In this case, you can use the shutter priority mode, roughly determine a shutter value, and then shoot. And the motion of the object is generally regular, then the shutter value can also be roughly estimated. For example, the shutter speed for photographing pedestrians is only1125 seconds, while it takes11000 seconds for photographing falling water droplets.

In order to get the right exposure, you need the right combination of shutter and aperture. When the shutter is fast, the aperture will be larger; The aperture is smaller when the shutter is slow.

In the case of aperture priority, we can easily control the depth of field by changing the aperture size, while in the case of shutter priority, using different apertures can achieve good shooting results for moving objects. Both should be used flexibly to meet our shooting needs in different situations.

This paper takes Canon EOS R3 as an example and applies it to Canon OS system.