Basic concepts of light and shadow

Shading is the most used resource in drawing manuals, and one of the ones that requires the most learning time. The placement of shadows is not an arbitrary matter, but rather responds to systematic rules that determine their position, shape, extension and density. This work exposes several procedures to rationalize shading and get the most out of its representation. It studies how shadows are drawn, what the most common methods are, their correct relationship with light, and how to represent volumes with basic chiaroscuro techniques to achieve the desired three-dimensionality and depth effect. In short, it is a very complete compendium that tells novice artists how to correctly solve any shading variant, based on exercises and steps by step that serve as inspiration and encourage them to put into practice all the techniques described.