How to change the background blur shape in Galaxy S9|S9+?

To change the background blur shape, selected photo should be taken by Live focus feature. The effect list will appear only. when the photo has blur shape in the background. It is more effective to see background blur shape, light source should not be spread and light source in dark place better to be applied this effect.

If the light source is too small or Spread out widely, this effect may not be applied. If this effect is not applied, you can see only background blur bar.

Please follow the steps listed below: