The 7.5 mm f/2.8 II Fisheye Lens for Canon RF by 7artisans is a manual lens with a wide field of view of 190°, allowing for unique perspectives and creative distortions. The maximum aperture of f/2.8 enables shooting in various lighting conditions while being compact and lightweight for handheld photography. The optimized 11-element lens with 9 groups features a higher refractive index in the front glass group, while the rear glass group is made of HOYA ED glass, which effectively reduces chromatic aberrations and improves image quality compared to the original lens design. The individual glass elements are multi-coated to suppress stray light and ghosting, enhancing contrast and color fidelity in strong lighting conditions. The lens has an all-metal housing and includes a built-in petal-shaped lens hood that reduces stray light and protects the front lens.