Important information about tourism in Costa Rica - Florida

In this diagram from his book Successful Drawing, Andrew Loomis (1892-1959) shares some tips for lighting a sphere.

Sunlight and overcast light present different challenges In overcast light, there's no clear light side and shadow side, nor is there a sharply defined edge to the cast shadow. In the sun, the cast shadow is an ellipse that represents the intersection of the lines drawn in perspective toward the antisolar point.More about fundamentals of drawing and perspective in the book by Andrew Loomis called Successful Drawing, which has been republished in a new edition.