If you prefer the freedom of painting your lighting in Photoshop, this tutorial teaches you a fast way to set up masks in Photoshop from renders with red, green, blue and black, without the slow tedious work of tracing them by eye with the Paint Brush or Lasso tool. The masks used in this tutorial are two different renders using the Red, Green and Blue channel. One render separates the faces facing different directions, the other separates different objects.
Samuli Lautjarvi is a 24-year-old digital painter from Finland. He has been working in a mobile game company for half a year and doing minor freelance gigs (CD covers and game graphics). His biggest enthusiasm is painting environment concepts, for some of which he uses Sketchup models as a basis.
For 3D modeling and rendering, I used SketchUp and Kerkythea (both free) and then Photoshop for the 2D part of the process. I won’t go into detail about how to model in Sketchup, if you’re new to the program, there are many good tutorials here to get you started. I have also included the model with Scenes for download here if you want to just practice the rendering and Photoshop work.