Freelensing is a photography technique used with interchangeable lens cameras in both film-based and digital photography. The lens is detached from the camera and held in front of the lens mount by hand during exposure. So the camera and lens don't have to be the same Brand, you can mix match brands, use vintage lenses. Any lens will work but if you want more depth of field use a lens that has a manual aperture ring. This allows the lens to be tilted or shifted creating a similar effect to a perspective control or "Tilt-Shift" lens, only with a lower degree of fidelity. The result is a combination of selective focus and light leakage which are used creatively to create surreal imagery. Because of the increase in flange focal distance, this technique is most successful with closeup or macro