The primate went to investigate the equipment before becoming fascinated with his own reflection in the lens.
And it wasn't long before the crested black macaque hijacked the camera and started snapping away sending award-winning photographer David Slater bananas.
David, 46, said: "One of them must have accidentally knocked the camera and set it off because the sound caused a bit of a frenzy.
"At first there was a lot of grimacing with their teeth showing because it was probably the first time they had ever seen a reflection.
"They were quite mischievous jumping all over my equipment, and it looked like they were already posing for the camera when one hit the button.