Lens Summary
Brand: Irix
Also Known As: Irix 15mm f/4
Lens Type: Prime Lens
Format: Full Frame / FX
Focus: Manual Focus
Lens Mount: Nikon F, Canon EF, Pentax K
Release Date: 2016-03-19
MSRP Price: $674.95
Made in: South Korea
Production Status: In Production
Lens Description: Offering a wide-angle perspective, and characterized by its premium exterior build, the 15mm f/2.4 Blackstone Lens from Irix is a sophisticated prime lens designed for Nikon F-mount cameras. Benefitting the broad field of view is an advanced optical design that features aspherical, low-dispersion, and high-refractive index glass elements to control various aberrations and distortions, as well as maintain accurate and consistent color. A Neutrino coating is also utilized to control lens flare and ghosting and achieve a high degree of contrast and color fidelity when working in strong lighting conditions.
IRIX 15mm f/2.4 Blackstone Specifications
| Lens Specifications | |
|---|---|
| Lens Type | Prime Lens |
| Focal Length | 15mm |
| Mount Type | Nikon F, Canon EF, Pentax K |
| Format | Full Frame / FX |
| Compatible Format(s) | Full Frame / APS-C |
| Compatible with Teleconverters | No |
| Image Stabilization | No |
| Aperture Information | |
| Aperture Ring | No |
| Maximum Aperture | f/2.4 |
| Minimum Aperture | f/22 |
| Maximum Angle of View (Full Frame format) | 110° |
| Optical Information | |
| Lens Elements | 15 |
| Lens Groups | 11 |
| Diaphragm Blades | 9 (Rounded) |
| Extra-Low Dispersion Glass Elements | 2 |
| Special Glass Elements | Three HR Elements |
| Aspherical Elements | 2 |
| Nano Coating | Yes |
| Anti-Reflective Coating | No |
| Focus Information | |
| Focus | Manual Focus |
| Built-in Focus Motor | No |
| Silent Wave / UltraSonic Motor | No |
| Minimum Focus Distance | 11.02" (28 cm) |
| Filter Information | |
| Filter Size | 95mm |
| Accepts Filter Type | Screw-on |
| Physical Characteristics | |
| Weather / Dust Sealing | Yes |
| Mount Material | Metal |
| Tripod Collar | No |
| Dimensions | 4.49 x 3.94" (114 x 100 mm) |
| Weight | 1.51 lb (685 g) |
| Other Information | |
| Available in Colors | Black |
Lens Construction
MTF Chart
Distortion
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