IRIX 15mm f/2.4 Blackstone Lens for Pentax

It doesn’t matter if you are a professional photographer looking for a lens for your next job, or an amateur looking to expand your focal range - the Irix 15mm f/2.4 is a right choice for every landscape photographer!

The Irix 15mm f/2.4 lens is an ultra-wide-angle lens created for your full frame (35mm) camera, available in Nikon F, Canon EF, and Pentax K mounts. This lens will allow you to open up to a completely new type of photography - thanks to the 110-degree field of view you will be able to capture eye-catching images, and the excellent optical properties will make the image sharp and full of details.

Creativity, ideas, and effort put into a photograph would be nothing without the right lens. Thanks to many years of experience in optical design, Irix lenses are characterized by their excellent resolution and minimal distortion (2%) and almost no vignetting. The Irix 15mm f/2.4 lens consists of as many as 15 elements arranged in 11 groups: 4 refractive elements, 2 ED elements and 3 aspherical elements. The focusing distance is only 28cm which, in combination with the f/2.4 light and 9 rounded aperture blades, make the lens stand out with extremely smooth bokeh with an amazing perspective.

It doesn’t matter if you’re traversing the hot sands of the Sahara or the frigid expanse of Antarctica - Irix lenses never back down from any challenge. The sealing system has been designed to protect the inside of the lens from moisture, dust, and sand. Equally important, the lens does not change its dimensions during focus pulling, eliminating the risk of dirt particles getting swept into the internal structure. These properties not only allow you to work in demanding conditions, but also guarantee the cleanliness of the camera’s mirror chamber sensor.

Firefly - Lightweight composite construction, with an embossed rubber focus ring, allowing for smooth and precise focusing. Included with the lens is a soft pouch.

Blackstone - Reinforced full-metal construction. All lens markings are engraved and filled with a UV-reactive paint enabling easy focusing in dark environments. Included with the lens is a hard case.

The Irix 15mm f/2.4 lens has a module that allows you to control the lens’ iris directly from the camera, thanks to which popular semi-automatic modes (PASM) and data recording in EXIF format are available. The use of electronics also enables the lens to be equipped with a focus confirmation system - the camera will announce the correct focus setting (either in the form of an icon in the viewfinder or with a sound), every time you set the focus correctly - it’s easy and convenient!

Key Features

• Most versatile wide-angle lens on the market
• Exceptional corner to corner quality
• Front filter thread, rear filters slot
• Fast f/2.4 aperture
• Low Distortion: 2%
• Easy and precise focusing with innovative infinity click function
• Beautiful bokeh

Technical Specifications

Image format
35mm, Full Frame
Focal length
15mm
Aperture
f/2.4
Field of view
110° (diagonal)
Focusing range
0.28 m (0.92 ft)
Focusing Type
Manual with lock function
Focus ring throw
140°
Minimal focusing distance
0.25m
Aperture range
f/2.4 - f/22
Aperture control
Via camera
Aperture shape
9 rounded blades
Lens construction
15 elements in 11 grups
Front filter thread
95mm
Rear gelatin filter slot
30 x 30 mm
Available mounts
Canon EF, Nikon F, Pentax K
Dimensions (width x length)
Canon EF
Firefly: 114 x 100 mm
Blackstone: 114 x 100 mm
Nikon F
Firefly: 114 x 100 mm
Blackstone: 114 x 100 mm
Pentax K
Firefly: 114 x 100 mm
Blackstone: 114 x 100 mm
Weight
Canon EF
Firefly: 568 g
Blackstone: 647 g
Nikon F
Firefly: 546 g
Blackstone: 619 g
Pentax K
Firefly: 555 g
Blackstone: 635 g
Additional features
Focus lock
Weather-sealing
In 4 key areas
Included accessories
Front lens cap
1 piece
Rear lens cap
2 pieces
Lens hood
1 piece
Case
1 piece
Package
1 piece
Warranty card
1 piece