no compromises
15mm f/2.4
optimal precision, minimal distortion
15mm f/2.4
expand your vision
innovative technology
encased in a smart design

Torn between smart technology and a classical design? With our Irix Blackstone 15mm f/2.4 lens, you can have both.

We have matched timeless design decisions with maximum functionality to offer you the perfect piece of durable technology. The solid aluminium and magnesium body ensures foolproof lens protection, even in the most extreme situations. Easy operation is achieved in all lighting conditions thanks to our engraved fluorescent markings and infinity click, just some of our many ingenious, photographer-friendly developments.

a lightweight option
with no optical compromises

Our Firefly lens offers the same optical performance and high quality mechanism as our Blackstone, but its ultra lightweight construction makes it the perfect choice for hikers, travellers, or anyone who simply likes to pack light.

The ergonomic, anti-slip, rubber coated focus ring makes for a practical, user-friendly lens. This lightweight option is ideal for on the go photography, without any compromise on optical quality.

beauty in
every detail
focus ring
Al-Mg body
fluorescent markings
Lens Version Firefly Blackstone
Housing material Lightweight material, 12% weight saving aluminium-magnesium alloy, premium finish
Housing Outer Finish standard anti-scratch
Focus ring material anti slip coating all-metal anodized ring with grooved surface
Markings printed engraved
Markings Paint standard UV light reactive paint
front lens element no yes
focus lock ring yes
focus ring yes
camera mount yes
Protective case included soft lens pouch hard lens case
retaining ring
The retaining ring of the frontal lens is free from engraving, printing or any other form of marking. This therefore prevents unwanted internal reflections when using high density filters.
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95mm front filter thread
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neutrino coating
Thanks to sophisticated optical construction and special neutrino coatings, colour aberration, ghosting and flare effects have been reduced to the absolute minimum.
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focus lock
get more focused
with focus lock
You can lock the focus ring at any time securing the setting that you choose. Precision, comfort and ingenious solutions.
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infinity click
and hyperfocal scale
we have mastered infinity
to the limits
The hyperfocal distance scale simply and intuitively gives information about accessible range for depth of field for a given aperture. When the ring is set in the “infinity” position, there is a noticeable “click”, making it easier to find the value without looking. Now you can fix your eyes on the image and concentrate on the composition.
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electronic aperture control
Available camera mounts:
Canon EF, Nikon F and Pentax K
focus calibration
ultimate precision
to sharpen your imagination
We have made every effort to ensure that each lens leaving the factory has been properly calibrated. However, for your comfort Irix lens provides you the unique opportunity to calibrate the lens for a particular model of your camera.
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rear gelatin filter slot
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extreme weather resistance

Irix lenses are made with phenomenal precision. Each Irix lens is equipped with a weather sealed construction which protects the interior against dust and moisture. Thanks to inner seals, our lenses are also protected from accidental water splashes.

intelligent filter options

We offer you excellent wide-angle lenses with front and rear filter options. Our lenses feature an ingenious way to easily access a rotatable filter through use of a window on the petal-shaped lens hood. Next to this, we have also included a rear filter slot for gelatin filters, offering you even more opportunity for filter use.

personalize your view
9 blade aperture mechanism
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  • Aspherical
  • High Refractive
  • Extra-low Dispersion
Image size 35mm „Full Frame”
Focal length 15 mm
Field of View 110⁰ (diagonal)
Focus range 0.25 m (0.82 ft) - ∞
Reproduction ratio 1:9
Focus type manual with lock function
Aperture range f/2.4 – f/22
Aperture control via camera
Aperture shape 9 rounded blades
Lens construction 15 elements in 11 groups 3x HR, 2x ED, 2x ASP
Front filter thread 95 x 1.0 mm
Rear gelatin filter slot 30 x 30 mm
Available mounts Canon EF, Nikon F, Pentax K
Dimensions (DxH) 114 x 100 mm (4.49” x 3.94”)
weight Firefly Canon 608 g (1.34 lbs)
Nikon 581 g (1.28 lbs)
Blackstone Canon 685 g (1.51 lbs)
Nikon 653 g (1.44 lbs)

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