My experience in 3d Architectural Visualization or Architectural Illustrator or Perspective Rendering is 20 years.
I started everything by manual using Poster Color, Gouace, Pencil Color and Water Color. By the time I entered my current office I use Computer for modelling and rendering. And that 6 years ago. I am good in 3ds Max and Vray, and work nicely with photoshop compositing.