Irix 15mm f/2.4 Blackstone Lens for Nikon F

Ultra-wide prime lens for Nikon F-mount cameras, delivering an expansive 110° angle of view with exceptional sharpness and minimal distortion. The Irix 15mm f/2.4 Blackstone combines a fast maximum aperture with robust weather-sealed construction, making it a reliable tool for landscape, architecture, and astrophotography.

Advantages

The advanced optical design features 15 elements in 11 groups, including 3 high-refractive (HR), 2 extra-low dispersion (ED), and 2 aspherical (ASP) elements. This configuration effectively controls chromatic aberration, distortion, and spherical aberration, ensuring edge-to-edge clarity even at wide apertures. The 9-blade rounded diaphragm produces smooth, pleasing bokeh, while the manual focus mechanism with a hyperfocal scale and focus lock enables precise, repeatable focusing. A rear gel filter slot accepts 30x30mm filters, complementing the front 95mm screw-in filter thread for versatile creative control.

Suitable for

• Landscape and nature photography
• Architectural and interior shots
• Astrophotography and night skies
• Creative wide-angle perspectives

Key specifications

• Focal length: 15mm
• Maximum aperture: f/2.4
• Lens mount: Nikon F
• Format compatibility: Full-frame
• Angle of view: 110°
• Minimum focus distance: 0.28 m
• Optical design: 15 elements in 11 groups
• Diaphragm blades: 9 (rounded)
• Focus type: Manual focus
• Weather sealing: Yes (3 seals)
• Construction: Aluminum-magnesium alloy
• Filter size (front): 95mm
• Rear filter slot: 30x30mm gel
• Special features: Focus lock, hyperfocal scale

Recommendations

For photographers who demand uncompromising wide-angle performance, the Irix 15mm f/2.4 Blackstone offers a rugged, weather-sealed design and superb optical quality. Its manual focus and hyperfocal scale make it ideal for precise, deliberate compositions in challenging environments.