Under a direct light source, between center light and shadow exists halftones. It is within these halftone areas that we find local color–hue, intensity, value and temperature at their truest registration. Photos will not show nuances within these that the human eye can detect. This series of lessons explore how to read and interpret these nuances.
Lessons 1 & 3 are studies, each showing how to use a principle to resolve an issue. Lessons 2 & 4 each take the previous study to a conclusion, showing how to use those same principles to bring convert the study into a painting.