The 1- to 5-stop, 52mm K&F Nano-X Circular Polarizer & ND Filter 52mmfrom K&F Nano-X Circular Polarizer & ND Filter 52mmK&F Nano-X Circular Polarizer & ND Filter 52mmcombines a circular polarizing filter and variable neutral density filter into one, creating an essential tool for landscape photographers. The circular polarizing filter feature helps reduce reflections and glare by filtering out light that has become polarized due to reflection from a nonmetallic surface. The light from the sun becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges and filters directionally polarized light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from nonmetallic surfaces and an increase in the saturation of skies and foliage.

The variable neutral density filter component provides an adjustable light reduction of 1 to 5 stops. It darkens the entire image evenly, allowing a photograph to be made with a wider aperture or slower shutter speed than usually required. Slowing the exposure time conveys blurred movement easily, creating a dynamic look for streams, waterfalls, landscapes, and more, while increasing the aperture provides finer control of depth of field.

0.3 to 1.5 Optical Density    Green Multicoating    Japanese Optical Glass Construction    Water- and Scratch-Resistant Coatings    Helps Eliminate Reflections and Glare    Darkens Entire Image    Greater Control over Exposure Settings    Allows Wider Aperture    Aluminum Filter Ring

Related Questions and Answers

Q: 1. I am interested in purchasing filters: polarized filter as well as a ND filter. There are so many to choose from - any suggestions?Hoya vs B&W ? What specifications should I compare? I am prepared to spend the extra money for the quality that best suits my current (beginner) and future needs. Camera Nikon D750 lens Nikkor 24-120.

A: I use both Hoya and B&W filters and are equally satisfied with them. Don't use polarizing filters for wide angle lenses.

Q: 2. How many stops of light transmission are lost by this filter?

A: The light lose on the B+W High-Transmission MRC-Nano Master Circular Polarizer Filter is 1-1.5 f/stops.

Q: 3. Are you guys an authorized dealer of Hoya? Would their factory warranty be included with the purchase of this filter?

A: Yes, we are an authorized retailer of Hoya products. This filter comes with a manufacturer's warranty, yes.

Q: 4. Does this filter allow the use simultaneoulsy of the OM system12-40 f 2,8 II original lens hood ?

A: Yes, as the hood is based on a twist and lock system.

Q: 5. Can I put it on a sigma 30 mm lens?

A: In theory you could with a step down ring, but you'll get vignetting on the edges. I'd recommend getting the correct 52mm filter.

Q: 6. Thickness of this filter when it is alone and after it is mounted? BP @ WC

A: The thickness of the filter frame is 5mm (not including the threads that attach to the front of the lens).

Q: 7. is it compatible with canon 18-135 lens?

A: If you look at the front of the lens, after the focal length and the F stop value there will be a single 2 digit number, that is the size of the filter you need, the number is usually preceeded by a 0 with a slash through it.

Q: 8. Does the 95 mm filter have front threads? (It appears that it does.)

A: Yes, the B+W High-Transmission MRC-Nano Master Circular Polarizer Filter (95mm) has front thread.

Q: 9. Does the 112mm CPL work on Canon RF 100-300mm f/2.8L IS USM lens?

A: Yes, the B+W Master High-Transmission Kaesemann Circular Polarizer MRC Nano Filter (112mm) will work with the Canon RF 100-300mm f/2.8 L IS USM Lens (Canon RF), BH #CA10030028RF.

Q: 10. Where are these manufactured? How many stops do you lose? Is it indexed as you turn the circular polarizer so you can understand you're settings in some manner?

A: As per our records, the B+W High-Transmission MRC-Nano Master Circular Polarizer Filter is made in Germany. Please note that this information is subject to change at any time. While there are no index marks on the filter, it does reduce the light by approximately 1.5 stops.