Select the Switch camera icon.
Select the desired area of the photo you wish to focus on. A circle will appear when the area is selected.
Move two fingers apart towards the edge of the screen to zoom in. Move two fingers inward towards the middle of the screen to zoom out.
Note: Zoom out all the way to 0.5X to capture Ultra-wide angle photos and videos.
Select the Capture icon.
Note: Alternately, you can take a picture by pressing one of the Volume buttons.