In order to use the Artifishal Labs 30mm F/10 Retro Disposable Lens you must enable a setting that lets your camera take a picture when it does not detect a lens.
For Fujifilm cameras, the setting is called “Shoot without Lens” and is found in the Shooting Menu.
For Sony Cameras, the setting is called “Release w/o Lens” and is located in the Setup Menu.
