Irix 15mm f/2.4 Blackstone Pentax

Irix 15mm f/2.4 Blackstone Pentax – Exceptional image quality for wide-angle photography

Irix 15mm f/2.4 Blackstone for Pentax is a perfect solution for photographers looking for an ultra-wide-angle lens with manual focus. With a focal length of 15 mm, this lens is ideal for outdoor, nature, and astrophotography, as well as architecture. It is designed to meet the highest demands of modern DSLR cameras, making it an excellent choice for both amateurs and professional photographers.

Outstanding features and benefits

The Irix Blackstone lens has an impressive optical construction consisting of 15 elements in 11 groups, including three high-refractive index elements and two extra-low dispersion elements. Two aspherical lenses contribute to outstanding image quality by enhancing brightness at the edges and minimizing distortion and aberrations. This makes the lens particularly useful for landscape and architectural photography where detail is crucial.

The new special features of focus lock, infinity lock, and hyperfocal scale provide a whole new level of functionality for manual focusing lenses. Its sophisticated optical design and special neutrino coating minimize chromatic aberrations, ghosting, and flare, resulting in cleaner and clearer images.

With a minimum focusing distance of 0.25 meters and nine rounded aperture blades, the lens offers fantastic softness in out-of-focus areas, which is essential for creating a professional feel in images. Additionally, the design allows for the use of 95 mm screw filters in the petal-shaped lens hood as well as gelatin filters at the back of the lens.

Specifications

• Image size: 35mm "Full Frame"
• Focal length: 15 mm
• Field of view: 110° (diagonal)
• Focus range: 0.25m
• Focus type: Manual with lock function and focus confirmation
• 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 1.0mm
• Rear filter thread: 30 x 30mm

Frequently asked questions

What is the focal length of the Irix 15mm f/2.4 Blackstone for Pentax?
The focal length is 15 mm.

What type of focus does the lens have?
The lens has manual focus with a locking function and focus confirmation.

What is the minimum focusing distance for the lens?
The minimum focusing distance is 0.25 meters.

What field of view does the lens offer?
The lens has a field of view of 110° (diagonal).

How many elements and groups are included in the lens construction?
The lens construction consists of 15 elements in 11 groups.