This 105mm Blackstone Infrared ND Filter from Wine Country Camera is an ND filter with a 64x filter factor that provides a 6-stop exposure reduction. Its 1.8 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By increasing aperture or slowing exposure time, you are able to control depth of field and convey movement more easily. Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters.

The design of this filter has been optimized for use with digital sensors and to promote nearly flat attenuation of visible and infrared light. Due to imaging sensors' greater susceptibility to infrared light compared to traditional film, color casts can occur when photographing darker subjects that require increased exposure times. To provide neutrality across the visible and infrared spectrums in order to eliminate color casts and ensure cleaner, truer blacks, one layer of Blackstone ND Coating is applied to each of this filter's surfaces. The Blackstone ND Coating is also designed to help minimize any effect on a digital camera's resolution when using this filter.

This Wine Country Camera {pnsize}mm Blackstone Infrared Neutral Density 1.8 Filter is constructed from Schott Ultra White Glass for clarity as well as color fidelity. It features an aluminum-alloy filter ring for durability while remaining lightweight.

1.8 Optical Density    Schott Ultra White Glass Construction    Aluminum-Alloy Filter Ring    105mm Front Filter Threads    Top Knurling    Darkens Entire Image    Reduce Shutter Speeds    Widen Apertures    Neutral Results, Visible & IR Spectrums    Includes Plastic Case

1.8 neutral density filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required

Providing a 6-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily

Filter does not affect coloration of the image and is ideal for use with other filters

Each surface includes one layer of Blackstone ND Coating that attenuates infrared light as well as visible wavelengths, to maintain color neutrality and suppress color casts due to increased exposure times

Blackstone ND Coating is designed to help minimize the filter's effect on a digital camera's resolution

Constructed from Schott Ultra White Glass for clarity and color fidelity

Aluminum-alloy filter ring for durability while remaining lightweight

105mm front filter threads allow for use with other filters.

Top knurlings provide a more textured grip while mounting to, or removing from, a lens

Plastic filter case for storage and transport

Related Questions and Answers

Q: 1. Does the Blackstone Line of lenses matches with the Dragonfly line of lenses in color and contrast like the IRIX Cinema?

A: The IRIX 15mm f/2.4 Blackstone Lens for Canon EF optically is the same as the Firefly version. The difference is in the housing. The Blackstone housing is stronger and made of magnesium and aluminum.

Q: 2. 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.

Q: 3. Is this lens focus by wire?

A: Not focus by wire, it is full manual focus.

Q: 4. Will this cover a RED Dragon 6k sensor?

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

Q: 5. Since there is no Sony FE version, how will this work with a Canon EF to Sony E Metabones adapter?

A: Works well with the Metabones Canon EF/EF-S Lens to Sony E Mount T Smart Adapter (Fifth Generation).

Q: 6. 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: 7. (Please ignore or delete my previous question about the difference between the FireFly and Blackstone iterations of this lens -- it is answered in the Overview -Duh! - My bad.) Are the FireFly and Blackstone editions identical in terms of image quality? Thank you!

A: yes Mark the firefly and the blackstone are identical in image quality. The only difference is between them is that the blackstone is fully weather sealed.

Q: 8. What is the difference between the FireFly and Blackstone iterations of this lens? What do you get with the extra money for the Blackstone? Thank you!

A: The Blackstone has a metal body and engraved numbers. The Blackstone is heavier as well. Optically they are the same.

Q: 9. How is the iris controlled on a Nikon F-mount camera? Is there a 'G' style control lever? Or is it purely electronically controlled?

A: The aperture is electronically controlled.

Q: 10. 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.