His artistic approach is defined by a rigorous use of black and white film and high contrast printing. Diepraam focuses on the physical textures of his subjects, whether he is photographing a person or a natural object. He avoids the use of wide, busy frames. Instead, he prefers to isolate details that convey a sense of weight and presence. This formalist discipline ensures that each image remains balanced and clear.

Collectors are drawn to the starkness and technical precision of his prints. His work avoids the fleeting nature of typical photojournalism. Because he focuses on composition and light, these images possess a quality that transcends their original context. They provide a sophisticated visual element for modern spaces. His prints are appreciated for their honesty and their ability to command attention through simplicity.