Why add Vignette to your photos?
Do you know what the Vignette tool is on your camera? If not, you should!
The Vignette tool darkens the edges of your photo to emphasize the center of the image - your subject. You can adjust the darkness and the size of the vignette to create the look you want.
You will find the Vignette tool in the photo editing features on your phone.
Photo without Vignette.
Photo with Vignette.
The result is subtle but really does make your subject the center of attention.