These 62 photographs have one thing in common: none of them uses more than two base colors. These two colors in tiny dots produce halftones from which all the gorgeous shadows and highlights derive. They're simple yet striking.
Have you ever wondered why some colorless shots (like sepia) are dull while others are absolutely striking? At least some of the time, it comes down to the duotone process. And for this week's Shooting Challenge, you'll create duotones.