The Hoya 77mm 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    77mm 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.

77mm 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. 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: 2. Is this a thin filter? What is the thickness of it?

A: Although Hoya does not publish the thickness of the NXT Plus Circular Polarizer, it would not be the thinnest option from Hoya. You may want to look to the Hoya 72mm HD3 Circular Polarizer Filter, BH # HOCPHD372 which is less likely to cause vignetting on wide-angle lenses. https://bhpho.to/3LXhNmp

Q: 3. Does this filter rotate?

A: Yes, the circular polarizer rotates. it enable you to add contrast to colors outdoors, and remove the majority of unwanted reflections form non-metallic surfaces such as water or windows. Keep in mind that if you have a powerful light source 9such as the sun) in the frame, it will eliminate any polarization effects.

Q: 4. Will this filter fit on my nikon 18mm-55mm AF-S lens?

A: Yes it will. The Nikon 18-55mm lenses use 52mm sized filters.

Q: 5. Hello,I noticed the only difference between this Hoya circular polarizer and last years model is this one is not coated. What is the benefit of a non-coated filter?Sincerely,Daniel

A: The main benefit of a non-coated filter is a lower price point. A multi-coated filter will provide dramatically improved light transmission and resistance to glare. If you have the option to spend more for multi-coating, I would definitely recommend it.

Q: 6. Does this filter fit on a Canon EPS 10-18 lens?

A: You shouldn't have any problems with this combination.

Q: 7. Is it normal for a circular polarizer to have movement once attached to the lens?

A: Define movement. It screws on and that should be tight (no movement). The filter itself turns to orient the angle of the polarization (as opposed to a non circular polarizing filter which only really works when shooting in landscape mode)

Q: 8. What country are Hoya filters made in?

A: The Hoya 67mm NXT Circular Polarizer Filter is manufactured in the Philippines.

Q: 9. What material is the metal?

A: They are made of aluminum.

Q: 10. Does this filter fit a tamron 16-300mm lens?

A: The Tamron 16-300mm lens requires a 67mm filter, so this filter in 49mm will not fit.