Wide Aperture Mode
Use wide aperture mode for close-up shots of objects and people. You can adjust the focal point after taking a photo to blur the background and make the subject stand out.
For optimal results, ensure that the subject is no more than 2 meters (6 ft) from the camera.
1. Open
Camera.
2. Touch 
on the upper screen to enter the wide aperture mode.
The wide aperture mode is only available in the Photo mode.
3. Touch the viewfinder to focus on a particular area.
4. Touch in the viewfinder and swipe left or right to adjust the aperture.
5. Touch 
to take a photo.
Adjust the background blur: Open Gallery, and touch a photo with tagged with and then touch to adjust the focal point and aperture. Touch
to save the photo.
Questions about your Huawei Mate 10? Post in the comments!
Huawei Mate 10 Manual [PDF]