The Hoya 52mm NXT Plus Circular Polarizer Filterhelps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally 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 this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.

A circular polarizer only differs from a linear polarizer in that it contains a quarter wave plane in addition to the linear polarizing filter. The addition of this quarter wave plane is to circularly polarize the linearly polarized light for the use of auto focus and exposure functions. Due to how the light is broken down and filtered with a linear polarizer, auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarized, it permits the use of these functions.

This filter is constructed from optical glass for clarity as well as color fidelity and features an aluminum-alloy filter ring that can be rotated in order to adjust the intensity of the polarization effect. To prevent internal ghosting and reflections, each glass surface includes five layers of anti-reflection coating. An additional hydrophobic coating results in an improved beading effect when in contact with water for greater cleaning efficiency.

Circular Polarizer Filter    1.7x Filter Factor, +0.8 Stop    Helps to Eliminate Reflections and Glare    Reduces Haze in Landscapes    Greater Color and Tonal Saturation    Multicoated    Anti-Reflective and Hydrophobic    Optical Glass Construction    52mm Front Filter Threads    Knurled Sides, Plastic Case

Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.

Polarizing filters arrange, and filter, directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of the light.

Clears up haze in distant landscapes and provides more saturated, vivid colors.

Strongest effect when used at a 90° angle from the sun.

Circular polarizers are ideal for use with digital cameras and autofocus lenses where a linear polarizer will often disrupt auto exposure and focus features.

1.7x filter factor reduces exposure by 0.8 stop.

Multicoated to prevent internal ghosting and reflections while providing an improved beading effect with water for more efficient cleaning.

Aluminum-alloy filter ring for durability while remaining lightweight.

Filter ring can be rotated to adjust the intensity of the polarization effect.

52mm front filter threads allow for use with other filters.

Top knurling to provide a more textured grip when mounting or removing it from a lens.

Constructed from optical glass for clarity and color fidelity.

Plastic filter case for storage and transport.

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. Will this fit on canon EF 50mm f/1.8 STM lens?

A: The Canon EF 50mm f/1.8 STM Lens accepts49mm filters, including this one.

Q: 3. Is this 46 mm filter compatible with the 800mm PF lens Z Mount?

A: No, the Hoya 46mm NXT Plus Circular Polarizer Filter will not work with the Nikon NIKKOR Z 800mm f/6.3 VR S Lens. That lens can only use the Nikon C-PL460 Slip-In Circular Polarizer, BH #NICPL460 (https://bhpho.to/3HdDhfm).

Q: 4. Can this filter be used with a Canon Powershot SX420 IS ?

A: Unfortunately, the SX420 IS lacks a filter thread, therefore it cannot work with this filter.

Q: 5. Does is it fits the canon RF 100-500mm ?

A: The Hoya 77mm NXT Plus Circular Polarizer Filter does fit the Canon RF 100-500mm f/4.5-7.1 L IS USM Lens.

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. May this 72mm filters fit on a 18-35mm Sigma lens ??

A: The Hoya 72mm NXT Plus Circular Polarizer Filter is not a thin filter so it might vignette a wide lens such as the Sigma 18-35mm. This Hoya HD3 is thin and would be a better option: https://bhpho.to/2pRzaOn

Q: 8. Hello!Could you please tell me if this filter is compatible with this lens: http://www.bhphotovideo.com/c/product/892390-REG/Sony_selp1650_16_50mm_F_3_5_5_6_Power_Zoom.htmlThank you!

A: Yes, the Hoya 40.5mm NXT Circular Polarizer is compatible with the Sony 16-50mm f/3.5-5.6 lens.

Q: 9. Is this non-coated filter really worth $93.90 when there are so many other options out there?

A: The quality of the glass and the coatings of this filter are superior to many lower cost filters, if you have an expensive lens and or good optical quality, yes it is worth it.

Q: 10. How is this filter different from the Hoya filter kit, which has three filters for $69? This filter alone costs more than that.

A: Thinner profile and most likely different optical glass technology. I am not certain about the glass. I have not used the filter kit.