In this wonderful informative blog Stacy Kamin leads us through the very complex theory of shadows in when painting Chiaroscuro
Oil painting.creating the illusion of space . One of the important techniques is the skill with which light and shadow are used to create the illusion
of a three dimensional space on a two dimensional surface.Se The direction of the light determines the shape of the object and cast the shadow, and the
the surface where the shadow is cast.
“ Shadows are the bones of a painting” says David A Leffel
What is shadow in painting?
What is a cast shadow in art?
Do shadows have color?
What is the color of the shadow?
Shadows are the stillness in a painting. Without strong shadows, light has no counter point. A painting needs areas where nothing happens so that the active parts of the painting–the light–can have more impact.
Shadows are warm and lights are cool. Shadows have the quality of depth and transparency whereas lights have the quality of cool opacity. In the shadow, warm colors recede and cool colors come forward, whereas the opposite happens in the light–warms advance and cools recede. This is true in natural light, whether outside or inside the studio. Understanding this principle will make your paintings seem real!