Combined Saturation Study. Top: Broad hue and saturation with narrow value. Bottom: Broad value, hue and saturation.
Combined Saturation Studies: Top: wide value and range. Bottom:Narrow hue, value with broad saturation.
Prismatic Study. Top: wide value and range. Bottom: wide value and range.
Monochromatic gray study. Top: low key. Bottom: hi key.
Prismatic Color Study. Top: Low key. Bottom: Hi key.