(Refurbished Excellent) Irix 11mm f/4 Firefly - F-mount (for Nikon) Camera Lens

The Irix 11mm f/4 Firefly is an extreme ultra-wide-angle prime lens designed for full-frame Nikon F-mount DSLRs. Offering a staggering 126-degree field of view, this rectilinear lens is engineered to keep straight lines straight, making it a unique and powerful tool for landscape, real estate, and architectural photography where capturing the entire scene is paramount.

Sophisticated Optical Design

Despite its extreme perspective, the Irix 11mm maintains high image quality through a complex optical path of 16 elements in 10 groups.

Precision Elements: It features three aspherical elements, two ED (Extra-low Dispersion) elements, and four high-refractive index elements to significantly reduce chromatic aberrations and distortion (measured at an impressive 3.13%).

Neutrino Coating: Irix’s proprietary coating technology reduces flare and ghosting, ensuring high contrast and color accuracy even in challenging backlit conditions.

The "Firefly" Advantage

The Firefly version is the lightweight specialist of the Irix lineup. Built with a high-quality, durable composite material, it is approximately 12% lighter than the metal Blackstone version. It features an ergonomic, anti-slip rubber focus ring that provides a tactile and comfortable grip for precise manual adjustments.

Innovative Handling Features

Infinity Click & Focus Lock: A tactile "click" lets you know exactly when you've reached infinity—crucial for astrophotography or low-light shooting. The Focus Lock ring allows you to secure your focal position so it doesn't shift during transport or extended shoots.

Rear Gel Filter Slot: Since the bulbous front element prevents standard screw-on filters, the Irix 11mm includes a 30 x 30mm rear gelatin filter slot, allowing you to use ND filters for long-exposure photography.

Weather-Sealed Construction: Equipped with protective seals against dust and moisture, this lens is ready for the rigors of outdoor adventures in unpredictable environments.

Seamless Communication

The lens features electronic contacts that communicate directly with your Nikon camera, allowing for full aperture control via the camera body, focus confirmation indicators in the viewfinder, and the recording of complete EXIF data.