Pygmy Marmoset, Loreto, PeruHere’s another of the pygmy marmosets that I photographed in Peru, the world’s smallest monkeys. As mentioned a few weeks ago, they’re only about 5 inches tall (not including the tail). This guy was after a favorite meal — sap from holes in the trunk of that tree. but stopped for a moment to pose for a picture. Nikon D500 with Nikkor 500mm PF lens, ISO 800, f/5.6 at 1/200th of a second, Godox V860iii fill flash.