This K&F Concept Nano-X HD Polarizer Filter 37mmfrom K&F Concept Nano-X HD Polarizer Filter 37mmis a 37mm multi-coated glass circular polarizing filter that 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.

This filter is constructed from German Schott B270 optical glass for clarity as well as color fidelity, and it features green multi-coating to prevent internal ghosting and reflections. In addition, each surface features resistance coating to prevent minor abrasions, repel water droplets, and resist smudging from grease and oil. It is made with an aluminum alloy filter ring that can be rotated to adjust the intensity of the polarization effect.

Circular Polarizer Filter    Helps Eliminate Reflections and Glare    Reduces Haze in Landscapes    Greater Color and Tonal Saturation    Multi-Coating and Resistance Coating    Schott B270 Optical Glass    Aluminum Frame

Related Questions and Answers

Q: 1. Is it stackable

A: No, the K&F Concept Nano-X ND2-32 Variable Fader & Circular Polarizer HD Green Coated Waterproof Anti-Scratch Japan Optics Filter (77mm) does not have filter front threads.

Q: 2. Why the green coating on the filter?

A: It aids in the reduction of glare that the filter could encounter according to K&F.

Q: 3. Will my lens cap fit on this filter? The lens is a Lumix 12-35 micro 4/3.

A: The front thread for this K&F Concept Variable Fader ND2-ND400 Filter (58mm) would actually be 62mm, so your current cap will not fit.

Q: 4. Could I use a 62mm cap?

A: Yes. The K&F Concept Variable Fader ND2-ND400 Filter (58mm) had 62mm front threads which can be used with a standard 62mm snap on lens cap such as this: https://bhpho.to/3DjuEgF

Q: 5. Can you use a lens hood with this? I am new to photography and can't seem to find one that would fit in or over this

A: The front of the K&F Concept Nano-X Circular Polarizer plus Variable ND2-ND32 Filter (58mm) is 62mm so you can attach a 62mm hood such as this: https://bhpho.to/3gdgVNq

Q: 6. What lens cap will fit this 77mm filter?

A: You may use any 77mm lens cap. Here are some examples https://www.bhphotovideo.com/c/product/806450-REG/Sensei_lc77_77mm_Center_Pinch_Snap_On.html or https://www.bhphotovideo.com/c/product/850508-REG/Sony_ALC_F77S_ALC_F77S_77mm_Front_Lens.html

Q: 7. Seems thick. Will it vignette? Depending on lens I suppose. Also, will it interfere with lens hood?

A: If your lens is wider than 24mm (full frame), then yes it will probably vignette. It would most likely interfere with the hood.

Q: 8. Does this have threads on the front side too? I'd like to attach a lens hood

A: Yes, this does have front filter threading. You can attach a lens hood to this filter.

Q: 9. Will it fit Sigma 16mm F1.4 DC DN EF-M?

A: Yes, as the Sigma 16mm f/1.4 DC DN Contemporary Lens has 67mm filter threads on the front of the lens, the K&F Concept Nano-X Variable Fader NDX HD Green-Coated Waterproof Anti-Scratch Japan Optics Filter (67mm, ND2-32) is compatible for use with the Sigma 16mm f/1.4 DC DN Contemporary Lens.

Q: 10. Can you please confirm this will fit on the Tamron 17-28 f/2.8 Di III RXD lens. Will the 72mm front thread accept a 2nd filter?

A: The Tamron 17-28mm f/2.8 Di III RXD Lens for Sony E has 67mm front focus threads. As such, the K&F Concept Variable Fader ND2-ND400 Filter (67mm) would be compatible to fit the front filter threads on the Tamron 17-28mm lens. A 72mm filter would not directly fit on the front of the Tamron 17-28mm lens without the use of a step-up ring such as the Sensei 67-72mm Aluminum Step-Up Ring, B&H # SESUR6772.