The Kodak Projection Ektar 100mm F4.5 EY879K Camera Lens is a high-quality, manual focus lens specifically designed for enlargements. With a maximum aperture of f4.5, this lens is ideal for capturing clear and detailed images with a shallow depth of field. The 100mm focal length allows for versatile shooting capabilities, from landscapes to portraits. Additionally, the screw mount makes it compatible with a wide range of cameras for easy attachment and use. Overall, this lens is a reliable choice for photographers looking to achieve precise and professional results.