How I can zoom out using RealityKit?

I am using RealityKit for a human body detection.
Code Block
let configuration = ARBodyTrackingConfiguration()
arView.session.run(configuration, options: [.resetTracking, .removeExistingAnchors])


A person always need stay too far in front of that back camera, more than 4 m. Can I apply a negative zoom? If I use a system camera application I see that a person can stay only 3 m front in.
Thank you in advance.
How I can zoom out using RealityKit?
 
 
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