The Hoya 37mm 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    37mm 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.

37mm 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. Does this filter fit the Nikon 500mm f/4 insert?

A: It does not. You will need B&H # NICPL405 which is the filter specifically designed for the drop in on that lens. https://bhpho.to/2X7oHNp

Q: 2. Please can someone tell me what NXT stands for in Hoya NXT polarizer filters?Thanks for tour kind attention, regardsYves T

A: It does not have any actual meaning. It is simply the designation for the next series of filters that can only be found in the US.

Q: 3. 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: 4. I do NOT want a slim profile filter. I am only interested in a 67mm CP filter. Is this a slim profile filter? thanks

A: The Hoya 67mm NXT Plus Circular Polarizer Filter is not a wide filter. It is a thin frame filter. This one is considered more of a standard frame, BH #BWCPB67 (https://bhpho.to/3WTjKsY).

Q: 5. Best polarizing filter for Fuji XT3

A: This Hoya filter is good as well as the B+W brand filter. Click the link below to view; https://bhpho.to/34wEADH

Q: 6. I know that to use this filter on my Minolta X-700, I'd need to expose an additional 1 to 1 stops for pictures to turn out correctly. I'd like to use this filter for a Pentax K-500 Digital Camera. Would I need to many any stop adjustments like I would my Minolta? Thanks & Happy Thanksgiving!!!

A: Yes, any circular polarizer will add stops to the exposure, it depends on the polarizer as to how many stops are added.

Q: 7. how many f stops of light transmission are reduced?

A: It has a filter factor of 2 to 4 (1 stop minimum, 2 stop maximum).

Q: 8. Why won’t this filter tighten on my lens? It’s a 62mm and that what my lens takes.

A: The loose portion is the adjustment ring for polarization. Otherwise the filter will fit tight to your filter thread on the lens.

Q: 9. What size lens do this filter fits?

A: Hoya 72mm NXT Circular Polarizer Filter will fit on any lens with a 72mm front diameter with threads. The filter front ring is also the same size and you can attach your lens cap on the filter.

Q: 10. will this fit the Canon 17-55mm f/2.8 lens?

A: yes