If you want to illustrate qualities such as the specific measurements and dimensions of a project, it’s best to use more precise visualization tools like a technical drawing. If you’re looking to express a more general idea or concept, a sketch or ideogram would be your best options. And finally, if you want to demonstrate the spatial distributions of a structure, a blue print will do the job.

Link: From Visual Arts to Rendering: The Relevance of Atmospheres in Architectural Visualization
via www.archdaily.com