Regula Werk King Regula-Cita III is a high-precision 35mm film camera that offers a range of features to help you capture stunning images. With its built-in light value exposure meter and depth of field scale, you can easily determine the correct exposure and depth of field for any given shooting situation. The camera also features a rapid transport lever for quick and easy film advance, as well as a range of shutter speeds and aperture settings to give you full control over your images.