Offering a dynamic ultra-wide perspective, this full-frame 9mm f/5.6 Lens from 7artisans Photoelectric provides a uniquely wide angle of view for Canon RF-mount cameras that is well-suited for interior, architecture, nature, and landscape subjects. The lens boasts an advanced optical design that uses extra-low dispersion, aspherical, and high refractive index elements to control a variety of aberrations and distortions to achieve high sharpness, clarity, and color accuracy. It has a manual focus design and permits working with subjects as close as 7.9" away, and a smoothly de-clicked aperture ring is especially useful for video purposes. The lens also includes a built-in hood to block stray light and prevent lens flare, and the optic is characterized by its compact and lightweight design, which makes it ideal for walk-around and travel applications.