Check out example codes for "how to move clipping planes C# in unity". It will help you in understanding the concepts better.

Code Example 1

// creating by instantiating prefab :
 GameObject cameraObject = (GameObject)Instantiate( myCameraPrefab );
 Camera myCamera = cameraObject.GetComponent< Camera >();
 // creating by adding component :
 Camera myCamera = gameObject.AddComponent< Camera >();
 // now you have a reference pointer to the camera, modify properties :
 myCamera.nearClipPlane = 0.05f;
 myCamera.farClipPlane = 100f;

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