This interchangeable lens is designed for tilt shooting, which is a necessity in the field of product/architectural photography. Since focusing position can be adjusted by mechanically transforming the optical axis, commercial photos can be shot without deformation of the subject caused by depth perception. Operability was improved by adding a macro function and enlarging the dial that requires fine adjustments. On the exterior, the mechanism part was miniaturized as much as possible, and operability during tilt shooting is achieved without hindering the movement of the subject, even when the cylindrical shape of the main lens unit is placed near the subject.