Career
According to Houbraken who repeated the verses of the poets Pieter Rixtel of Haarlem and Johannes Blasius, he was a good portrait painter. According to the RKD Buns was a pupil of Govert Flinck in Amsterdam before 1660. In March 1661, Buns and Sophia Lefebre baptized a son Ferdinand in the Mozes en Aäronkerk in that city.
He was known for his portraits and a portrait of an unknown woman dated 1667 has been registered to him.