His work is defined by a precise, linear technique that captures the textures of seventeenth-century life. Coning frequently worked after the designs of Frans Hals and Dirk Hals, specialising in portraiture and genre scenes. He used fine hatching to define the weight of fabric and the specific features of his subjects. Unlike more experimental etchers, Coning maintained a formal clarity in his plates. His engravings of Dutch regents and military figures provide a clear record of the faces that shaped Haarlem during its most prosperous era.

Collectors today value Coning for the historical accuracy and technical discipline found in his prints. His portraits offer a window into the Dutch Golden Age through the eyes of a man who was himself a member of the ruling class. The clean lines and formal compositions of his engravings suit modern interiors that favour classic draughtsmanship. These works represent the intersection of art and authority in the seventeenth-century Netherlands, making them compelling additions to a collection of European master prints.