It’s no secret that there are many ways to enhance an architectural rendering.
Color Correction:
Quite simply, color correction is the process of altering and enhancing the color of a rendering through a digital process. Color correction is the ultimate finishing tool for any architectural rendering.
Levels, Curves, and the Histogram
Levels and Curves are among the oldest features in Adobe Photoshop, and they continue to be two of the most fundamental tools for improving the appearance of an architectural rendering.
Most of these enhancements are done in post production. Here, is a wonderful video, showing a behind the scene at what post production looks like.