The ULANZI DOF adapter ring is a second-image adapter; the lens projects an image onto a screen, which is then captured by the smartphone’s main camera, resulting in some loss of image quality. Designed specifically to adapt 17mm threaded mount lenses to Sony E-mount full-frame cameras, it enables a seamless connection between smartphone lenses and DSLR lenses, offering great flexibility when shooting with different lenses. It provides a secure and reliable connection, ensuring high-quality photographs. With this adapter ring, photographers can easily swap lenses and create unique and creative compositions with their camera