How to adjust the focal length of SLR

? Lead: How to adjust the focal length of SLR? As mentioned earlier, Canon 1 100D is equipped with a central cross full 9-point autofocus system, which means that Canon 1 100D has 9 focus points, so how to choose the focus point when taking pictures?

Focus on what you want to focus on clearly.

Be sure to focus when shooting to ensure that the subject is clear. First, we need to press the shutter halfway. At this point, the selected focus will flash red, and when the camera focuses successfully, a short? Didi? Sound. After focusing, we can completely press the shutter button to complete the whole shooting process.

First, click the autofocus point selection key.

Then adjust the focus through the dial wheel.

If you want to change the focus, you need to press the autofocus point selection key first, and then select the focus by dialing the main dial. The red light is the selected focus.

When taking landscape photos of large scenes, autofocus is usually chosen.

It is worth mentioning that in the process of selecting the focus point, all the focus points will light up at the same time, which is called autofocus. When autofocus is selected, the camera will automatically determine the subject in the picture, which is quite intelligent as focusing.