Here is a pinto bean. It's the most consumed bean in the Southwestern United States and Northern Mexico. Pinto beans and rice with corn tortillas contain all the amino acids necessary for human life. This roughly average sized pinto bean is 12.1 by 7.5 mm.
Equipment used: Canon EOS Rebel T5i with a standard zoom lens (EF-S 18-55 mm) on a 49 mm long extension tube.