Q&A: light source
Jasper Hassard, US
You’ll need to bear in mind three key factors. These are the surfaces lit by the light, the core shadows that appear on the objects in the surrounding areas, and the cast shadows of various objects.
All the surfaces that face the light source will be lit, but the strength and saturation of the illuminated surfaces will drop the further away they are from the light. Core shadows appear on the faces of the objects facing away from the light source.
It’s important that your shadows are cast correctly. You can make this process easier by creating extra one-point perspective grids, with your light sources at the centre. If you’re working with a more complex environment, you can transform the grid you created for your lights on to the perspective planes to make them even more accurate.
You can also strengthen the realism of your painting by adding reflected lights to the darker side of your objects. The colour of these lights will be a mix of your light source and the environment around your object, which will help to integrate your objects into the environment.
Notice how the light affects the surroundings and how it creates lit
surfaces and shadows.