Irix 15mm f/2.4 Blackstone Pentax IL 15BS PK

The Irix 15mm F2.4 Blackstone Pentax is designed for the Pentax K-1 full-frame camera (but also suitable for APS-C sensor) and offers a minimum focusing distance of 28cm. The lens is provided with a ?neutrino? coating to exclude any kind of ghosting, color aberration, and flare as much as possible. The lens consists of 15 elements in 11 groups. The construction includes three elements with a high refractive index (HRI), two with an extra-low dispersion (ED), and two aspherical lenses which are responsible for minimization of distortion and aberrations. In addition, this construction offers a significant improvement in image edge clarity and overall image quality. The housing is made of high-grade magnesium and aluminum and is able to withstand 'extreme conditions'. The manual focus ring feels very high quality and ensures a ?clicking? tactile feedback. The Irix 15mm F2.4 lens is designed to deliver the best optical performance for high-quality full frame SLRs. Features of the Irix 15mm F2.4 Blackstone * Lens focal length 15 mm * Focus Range 0.28 m (0.92 ft) * Aperture Range F2.4 - F22 * Lens Construction 15 elements in 11 groups 3x HR, 2x ED, 2x ASP * Also available for Canon and Nikon DSLR

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The ultra wide angle, rectilinear manual focus lens designed for DSLR cameras. Providing a focal length of 15mm, this lens is ideal for outdoor, nature & astro photography, or architectural photography.
The optical construction of the Irix Blackstone wide angle lens is superb, meeting the most demanding requirements of modern cameras. 15 elements in 11 groups include three elements of highly refractive glass and two of extra low dispersion glass. Two aspherical lenses provide extremely high image quality and improve image brightness at the edges, while minimizing distortion and aberration.


The new special features such as focus lock, infinity click and hyperfocal scale set a new level of manual focus lens functionality. Thanks to sophisticated optical construction and special neutrino coating, colour aberration, ghosting and flare effects have been reduced to the absolute minimum.


With a minimum focusing distance of 0.28 metre (0.92 ft) and 9 rounded shaped aperture blades, the lens stands for supremely smooth out of focus areas. The design of the lens allows the use of 95 mm screw in filters at the front in the petal shape lens hood and gelatin filters at the back of the lens.



Image Size 35mm Full Frame
Focal Lenght 15 Mm
Field Of View 110 (Diagonal)
Focusing Range 0.28m
Focusing 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
Dimension 114 X 100mm 
Weight 625G