His artistic approach favoured clarity and balance over dramatic movement. In works like Girl Reading at the Window or The Dentist, he captured specific human interactions with a steady hand. He avoided the excessive ornamentation of the earlier Baroque period. Instead, he used light to define forms and create a sense of stillness. This method made his religious paintings, such as The Peace of the Holy Family, feel accessible and human rather than distant or purely symbolic.

Modern collectors are drawn to the quietude found in Riedel's compositions. His work fits well in contemporary spaces because it avoids visual clutter and focuses on clear subjects. The domestic themes provide a sense of historical continuity without the weight of heavy allegory. His prints offer a clean aesthetic that reflects the orderly principles of Neoclassicism.