camera move(slide) continiously on IOS

I can move my camera around with two fingers, when I release my two fingers, camera permanently stops moving. Is it possible, after finger release, to do an ice move, like camera would continue move with cool-down effect (slowing down)?
( Or even while you moving camera, camera would do a drifting effect (like wiggle)?)

Here is my current script

 var X = ((Input.GetTouch(0).deltaPosition.x+Input.GetTouch(1).deltaPosition.x));
 var Z = ((Input.GetTouch(0).deltaPosition.y+Input.GetTouch(1).deltaPosition.y));

 var multiply = camera.orthographicSize*0.0017;

Instead of directly placing the object using transform.position , tell the object where to go with lerp :

replace camera.transform.position-=Vector3(X*multiply,0,Z*multiply); with :

var moveSpeed : float = 5.0;
camera.transform.position = Vector3.Lerp( transform.position, ( transform.position - Vector3(X * multiply, 0, Z * multiply) ), Time.deltaTime * moveSpeed );