Adjust portrait mode blur
With an iPhone XS or iPhone XR running iOS 12.1, you can adjust the amount of blur in a Portrait Mode photo before or after you press the shutter button.
To adjust before taking the photo, tap on the f button at the top of the camera app, and then adjust the slider until you’re happy with the overall look.
Adjusting after you take a photo is just as quick: View the photo in the photos app, select Edit and then select Depth. Again, adjust the blur until you’re happy.