How to blur the background of iPhone6?

The method of shooting the background blur effect by iPhone6 is as follows:

Method 1: Adjust the focal length manually.

After the composition is completed, select the photo subject A to be highlighted and the part to be blurred (except A) so that the two parts are not on the same plane, and manually click A for many times to focus on the line of sight. After adjusting to a satisfactory effect, keep the phone stable, press the shutter and click on the photo, which has the effect of blurring the background. As shown in the figure below:

Method 2: autofocus locking.

IPhone6 has autofocus lock function. This can automatically lock the main body a. In this way, the specific operation method is to first find the subject A of the photo and focus on it. After the focus is successful, long press the screen and the focus box appears, which is to complete the focus lock. Click on the photo.