What is the difference between the architectural decoration of the rendering and sketching, coloring, drawing connection

Architectural rendering mainly highlights the object is the building, the requirements of rapid expression of personal design intention, sketch, color, drawing is the basic learning categories of art, mainly to master the modeling method, can be very good performance of their own see or think of things. If you have some art background, drawing architectural rendering will be good to start some, because they are the principle of perspective, modeling principles, color principles are the same, but the expression of different methods, the use of different painting materials, want to achieve different purposes. However, even if you do not sketch, color, drawing, but also can draw a good effect, just may be the basic part of the practice time longer.