1. In a computerized architectural design environment in which a design program is loaded into memory and processed at a central processing unit, a computer-implemented method for allowing a user in real-time to adjust a depth of field of a perspective of the user within a design space, the method comprising: receiving one or more inputs from a user regarding a layout of one or more objects in a design space; rendering a three-dimensional model of the layout of the design space for display on a computerized display; receiving from the user one or more input selections regarding a desired depth of field of the perspective of the user relative to one of the one or more objects rendered within the three-dimensional model; calculating revised rendering instructions that blur at least a portion of the design space; and displaying, in real-time, the three-dimensional model with the desired depth of field to the user.