SUPERIOR IMAGE QUALITY - Experience exceptional sharpness and clarity with 14 elements in 12 groups, including 2x double-sided aspherical and 4x extra-low dispersion elements for stunning detail. ULTRA-WIDE PERSPECTIVE - Capture expansive scenes with a 9mm focal length (13.5mm equivalent on 35mm) and a remarkable 113° angle of view, perfect for landscapes and architectural photography. BEAUTIFUL SUNSTARS - Create captivating sunstar effects with the lens's unique optical design, adding a creative flair to your images, especially in bright, outdoor settings. PRECISE MANUAL FOCUS - Achieve pinpoint focus with the manual focus mechanism, allowing for precise control and creative expression in your photography, down to a minimum distance of 7.9'.