As a CGI (computer generated imagery) artist, throughout my career, I worked in several design and visualization agencies with different design approaching strategies. Some of them used to stick to drawings or styling photos at the inception stage through to half way the project, while others used 3D right from the start.
The former ones, used to industries background, like photography, CAD or illustration. They used to stick to the old methods of drawings or photography until the project design was signed off by the client, and in that case, the final render turned out to look way different than what’s been signed off due to several inconsistencies of camera angles, camera lens, illumination(especially shadows — when drawing, you design the windows in parts where you don’t realize how light or shadows will be cast).
In fact, drawings and photography are a waste of time and money.
Of course, don’t get me wrong, a 15 minutes rough sketch of an instance in a meeting is always welcome but anything more than that it’s not really worth it. There’s no point implementing any sketches in your production pipeline.