How to set the autofocus of Canon camera 550D?

The autofocus setting of Canon 550D camera mainly includes two aspects: the choice of focusing and the choice of focusing mode.

1. Settings in automatic shooting mode. In this shooting mode, the photographer does not need to make any settings, and all autofocus points will be used for focusing; When shooting in this mode, if the subject moves during or after focusing, the artificial intelligence servo autofocus will be started, and the camera can focus the subject continuously.

2. Settings in P, A, S and M shooting modes. In these shooting modes, the photographer can set the focus and focusing mode to adapt to different shooting conditions or objects. The specific setting method is:

A. Select the autofocus point: first press the autofocus point selection key on the back of the camera, then press the direction key to select the focus point, and finally press the SET key to complete the setting.

B. Focus mode selection: First press the AF button on the direction key on the back of the camera, then select the focus mode through the left and right direction keys, and finally press the SET key to complete the setting.

3. There are two kinds of autofocus points for Canon cameras: autofocus selection and manual focus selection.

A, automatically select the focus. The camera will automatically select the focus of focus.

B. Manual focus selection means that the photographer chooses a good focus before shooting, and can only focus with the selected focus when shooting.

4. The focusing method of Canon camera is as follows:

A. Single autofocus: Focus only once when the shutter is half pressed. Suitable for shooting still objects.

B, artificial intelligence servo autofocus: the shutter keeps the focus on the subject on time. Suitable for shooting moving objects with changing focal length.

C. Artificial intelligence autofocus: If the stationary subject moves when the shutter is half pressed, the focusing mode can be automatically changed from single autofocus to artificial intelligence servo autofocus.

Extended data

In terms of real-life performance, Canon 550D has also been greatly improved. If you have used the live view function of 500D or 50D, you will find that the focus speed in this mode is very slow and you will be "hesitant". Canon 550D has made great improvements in this respect.

As an upgraded version of 500D, 550D naturally supports HD video shooting and Liveview. 550D Liveview has two working modes, and the names on the menu are fast mode and real-time mode.

The difference is that when using live view in fast mode, the reflector is raised and the camera will not focus in real time. When the shutter button is pressed for focusing, the mirror descends and the camera's phase detection focusing module starts focusing. Nothing can be seen on the LCD at the moment of focusing. After focusing, press the shutter completely and you can take pictures.

In real-time mode, when the video capture key is pressed, the mirror is lifted and the viewfinder image appears on the lcd. When the shutter key is pressed to start focusing, the camera focuses through contrast detection. Real-time mode allows users to specify any area of full-screen focus.

In addition, when the camera is in focus, the user can see the process from blur to clarity near the focus on the LCD. At this time, press the zoom button, and you can also enlarge the focus area by 5- 10 to check the focus.

Although the focusing speed of real-time mode is very slow, it is perfect to shoot still life with tripod, especially macro photography.

Reference: Canon 550d- Baidu Encyclopedia