Blackstone – premium series with all-metal construction

Blackstoneis the more elaborate premium version, distinguished by anall-metal constructiondesigned for demanding use.

It usesfour sealsin key areas, while engraved markings filled with UV-reactive paint are easier to read in low light and at night.

Blackstone or Firefly – what is the difference?

Compared with the lighterFireflyBlackstone places more emphasis on durability and premium finish. Firefly has a rubberized focus ring, three seals and a soft pouch, whileBlackstoneoffers all-metal construction, four seals, engraved UV markings and a rigid protective case.

Landscapes, architecture, interiors and night shooting

The 15 mm focal length captures a broad scene, making it well suited to landscapes, architecture and interiors. Thef/2.4maximum aperture expands its usefulness in low light, night landscapes and astrophotography.

Rectilinear 110° – ultra-wide without the typical fisheye look

The angle of view is approximately110°. Its rectilinear design aims to render straight lines more naturally, which is especially important for architecture and interiors.

15 elements in 11 groups and Neutrino Coating

The optical construction uses15 elements in 11 groupsincluding three HR, two ED and two aspherical elements.Neutrino Coatinghelps reduce aberrations, ghosting and flare while maintaining good contrast.

Focus Lock, Infinity Click and hyperfocal scale

Focus Locksecures the chosen focusing position, whileInfinity Clickmakes the infinity position easier to locate by feel. The hyperfocal scale assists with depth-of-field planning.

Focus from 0.28 m and 9 rounded blades

Minimum focusing distance is0.28 mallowing strong foreground emphasis. The diaphragm uses9 rounded bladesfor smoother rendering of out-of-focus areas.

95 mm front filters and 30 × 30 mm gelatin filters

A95 mm front threadaccepts conventional screw-in filters. A rear holder additionally supports30 × 30 mm gelatin filters.

Nikon F – Nikon DSLRs and Z mirrorless cameras via FTZ / FTZ II

This version uses theNikon F mountand is designed for Nikon DSLRs with an F mount, including full-frame and compatible DX bodies.

It can be used on Nikon Z mirrorless cameras through the originalNikon FTZ or FTZ IIadapter.

The lens focuses manually but contains electronics.On a compatible body, the module enables camera-controlled aperture, PASM modes, EXIF recording and focus confirmation.

Key specifications

• series:Blackstone
• model:Irix 15mm f/2.4 Blackstone
• mount:Nikon F
• focal length:15 mm
• maximum aperture:f/2.4
• type:ultra-wide, rectilinear
• focusing:manual
• angle of view:approx. 110°
• minimum focusing distance:0.28 m
• aperture blades:9, rounded
• optical construction:15 elements / 11 groups
• special elements:3 HR, 2 ED, 2 aspherical
• Focus Lock:yes
• Infinity Click:yes
• filters:95 mm front thread + rear 30 × 30 mm gelatin filters
• sensor format:full frame and APS-C
• Blackstone construction:all-metal
• seals:4
• markings:engraved, with UV-reactive fill.
• aperture control:electronically from the camera body
• communication:PASM modes, EXIF recording and focus confirmation.

In the box

• Irix 15mm f/2.4 Blackstone for Nikon F
• lens hood
• front lens cap
• 2 rear lens caps
• rigid protective case
• original packaging.