Offering a wide-angle perspective, and characterized by its premium exterior build, the 15mm f/2.4 Blackstone Lens from Irix is a sophisticated prime lens designed for Nikon F-mount cameras. Benefitting the broad field of view is an advanced optical design that features aspherical, low-dispersion, and high-refractive index glass elements to control various aberrations and distortions, as well as maintain accurate and consistent color. A Neutrino coating is also utilized to control lens flare and ghosting and achieve a high degree of contrast and color fidelity when working in strong lighting conditions.

Complementing the optics, this 15mm f/2.4 makes use of a manual focus design for fine-tuned control, and incorporates a unique positive focus lock to secure the focusing position at any point for consistent, repeatable shooting. As the Blackstone version of this focal length, this lens is also distinguished by an aluminum and magnesium alloy exterior, engraved lens markings with fluorescent UV paint for high visibility, and extensive weather-sealing about the lens to permit working in harsh environments.

Open Box Products Have a Limited 2-Year Manufacturer Warranty    Nikon F-Mount/FX Format    Aperture Range: f/2.4 to f/22    Two Aspherical Elements    Two ED and Three HR Elements    Neutrino Coating    Manual Focus Design with Focus Lock    UV Fluorescent Engraved Markings    Depth of Field and Focus Distance Scales    Weather-Sealed Magnesium Alloy Housing    Rounded Nine-Blade Diaphragm

The Blackstone version of the 15mm f/2.4 lens features a durable aluminum and magnesium alloy housing and weather-resistant exterior along with inner seals, and an extra seal at the front element, to protect against dust and moisture intrusion. The metal exterior also distinguishes itself with an anti-scratch finish, and sports engraved focus distance and depth of field scales with fluorescent UV paint for high visibility when working in low-light conditions.

Wide-angle prime designed for FX-format Nikon F-mount DSLRs, this lens can also be used on DX models where it provides a 22.5mm equivalent focal length.

Two aspherical, three high-refractive index, and two extra-low dispersion elements are featured within the optical design to limit both spherical and chromatic aberrations, as well as color fringing and distortion, for improved clarity, sharpness, and even illumination.

A Neutrino coating has been applied to limit lens flare and ghosting for improved contrast and color fidelity.

Manual focus designed is benefitted by a positive focus lock mechanism to secure your focus position at any point to limit unwanted shifting of focus.

A hard click stop indicates the infinity position on the focus ring for easy use in low-visibility conditions.

Includes complimentary additional rear lens cap.

Large depth of field scale benefits using hyperfocal and pre-focus techniques.

Front of lens has 95mm-diameter filter threads and the rear of the lens accepts 30 x 30mm cut gel filters to lessen the likelihood of vignetting.

Rounded nine-blade diaphragm contributes to smooth bokeh.

Related Questions and Answers

Q: 1. does this lens have a chip for canon?

A: Yes it does, as well as electronic aperture control.

Q: 2. Will this cover a RED Dragon 6k sensor?

A: Yes, this lens is designed to cover 36 mm 24 mm sized sensors.

Q: 3. willit work with nikon d3300?

A: Yes, this will mount on a D3300. Due to the camera's APS-C sensor, this lens will have an equivalent focal length of 22.5mm.

Q: 4. Can someone please explain or help me to understand how to read the hyperfocal scale on this lens? I have never had a problem using hyperfocal scales on any of my other lenses, but this one is quite perplexing to me, there are so many values on it.

A: If you are old school and know how to use the hyperfocal scale on manual lenses, then work as you have before. If you wish, you can also use the innovative hyperfocal indication line but really it is meant for others. That is because, ever since auto focus lenses came into use, they have mostly come without manual aperture scales since they had no place for the scales to be applied. Therefore a generation of photographers has grown up not knowing what they are for or how to use them. With Irix's hyperfocal line, the new user determines what aperture they are using, moves the focus ring to line up the aperture number on the Irix hyperfocal line with the lens focus mark. Then they look to the aperture numbers on the traditional scale to see the hyperfocal distance or the area that is in acceptable focus. To old users it is not necessary, to new users it is very helpful.

Q: 5. Will this fit a canon Reble t8i ?

A: Yes, this lens is compatible with the T8i but this is a manual focus lens only, no autofocus.

Q: 6. Will this lens work on a Nikon D3300?

A: Yes, this will mount on a D3300. Due to the camera's APS-C sensor, this lens will have an equivalent focal length of 22.5mm.

Q: 7. Does this lens auto focus confirmation work with the Nikon D7500 ?

A: Yes, this lens has electronic contacts.

Q: 8. Does the lens hood come off or is it fixed to the lens?

A: Yes, The lens hood is removable, at the clearly visible separation line above the 15mm Irix etc logo. The lens works well for me. All lenses are a compromise and you should read the many available reviews.

Q: 9. Can you adjust the aperture manually?

A: No, you cannot. The aperture of the IRIX 15mm f/2.4 Blackstone Lens for Canon EF, B&H # IR15BSC, would be controlled by the dials built onto your Canon body.

Q: 10. IS there any warranty if it is shipped overseas? (outside USA)

A: The warranty that comes with most any B&H product, including this one, is USA only. If you need international protection, please purchase a Square Trade protection plan that becomes available during your check-out.