The Irix 11mm f/4 Blackstone for Nikon is a manual-focus ultra-wide prime designed for Nikon F-mount DSLRs. Key features include:
Ultra-wide 126° angle of view
Advanced optics for high-quality images
10.83-inch minimum focusing distance
Premium, weather-sealed construction
Ultra-Wide Angle. The Irix 11mm f/4 Blackstone for Nikon is really, really wide. Like really wide. Like 126° angle of view wide. Because its field of view is exactly 126°. Its minimal distortion makes it an excellent choice for architecture and landscape photography. Using a DX camera? You’ll have a focal length equivalent to 16.5mm.
Very Close Focus. When this lens’s wide perspective is coupled with its 10.83-inch minimum focusing distance, foreground subjects become exaggerated, creating a broad sense of space in the image.
Advanced Optics. The Irix 11mm f/4 Blackstone’s sixteen-element/ten-group design includes three aspherical elements, four high-refractive index elements, and two extra-low dispersion elements that control distortions and aberrations while retaining sharpness and clarity at any focus distance. The Neutrino coating controls ghosting and flare for a color-neutral image.
Premium Build. The 11mm f/4’s durable aluminum and magnesium-alloy housing boasts an anti-scratch finish and high-visibility depth-of-field scales. Its weather-resistant construction includes internal seals to guard against dust and moisture, and an additional seal to protect the front element. The built-in petal-shaped hood also protects the front element while blocking light to reduce flare.
Modern Manual Focus. This fully manual-focus lens features a positive focus lock mechanism to help prevent focus shifting, while a hard click stop indicates the infinity position on the focus ring for easy use when you’re working in low-visibility conditions.
