Rendering is a term of the English language that wants to explain the operation performed by a designer to produce a quality representation of an object or an architecture (designed or detected). In recent times it has assumed an essential value strictly connected to the Computer Graphics field, where it identifies the process of “rendering” or generation of an image starting from a mathematical description of a three-dimensional scene interpreted by algorithms that define the color of every point of the digital image. In the product development and commercialization step, photorealistic Renderings represent a real and economical alternative to the traditional disply solutions. With easiness and reduced times, changes can be done to the model and combinations of materials and colors can be carried out. The images can also be used for marketing and promotion purposes even before the creation of the prototype, with a consequently marked reduction of costs and time.