The 49mm K&F Concept Nano-X UV Filter 49mmfrom K&F Concept Nano-X UV Filter 49mmis a UV filter made of tough, tempered glass with light transmittance up to 99.3%, rendering HD-quality pictures. It offers 28 layers of nano-coating, which effectively reduces the surface reflection of the filter. The lens filter includes a double-sided coating and is dustproof and waterproof.

3.3mm Slim Design    Multi-Coating    Waterproof Coating    Anti-Sctraching Coating    96% Luminousness

The UV filter is made of tough tempered glass, where light transmittance can be up to 99.3%, rendering HD-quality pictures.

The aluminum alloy frame with knurled design makes it easy to disassemble.

With a 3.3mm ultrathin frame design, it can effectively prevent vignetting when used on a wide-angle lens.

The lens is dustproof, waterproof, anti-fouling, and anti-mildew, and it offers a double-sided coating for better protection.

With a 9H hardness tempered glass, it supports 6.6' falls with no damage to the filter.

It offers 99.6% transmittance, presenting top-notch image quality.

It is made with Japanese optical glass and K&F Concept Nanotec technology.

With 28 layers of nano-coating, it effectively reduces the surface reflection of the filter. It ensures a light transmittance reach to 99.6% with no affect to the image quality.

Related Questions and Answers

Q: 1. I recently bought a Kowa TSN-663M spotting scope and am looking for a protective filter for it. Will this fit my 66mm lens spotting scope?

A: The filter on this page is 72mm - you are asking about a 66mm lens. If 66mm is the actual diameter of the threaded area on your Kowa, the answer is NO. Measure (or, better, look at the paperwork on your scope)and buy the appropriate size filter.

Q: 2. According to the write up: Note: This filter ring's outside diameter is slightly larger than the actual thread size, and because of this you may be unable to attach the lens manufacturer's bayonet-mounted lens hood to the lens while using this filter. This is dependent on your specific lens and how thick the front rim of the lens is; with thinner, low-profile lenses usually being affected more.So if I apply this model B+W on a Nikon 50mm 1.8G lens, will the Nikon lens cap and the Nikon lens hood snap onto the threads? Thanks.Del

A: I am using the 58mm XS-Pro UV MRC-Nano 010M Filter on a Nikon 50mm 1.8G lens. I have had no problems at all with the lens cap or hood when this filter is on the lens.

Q: 3. What is the filter factor of this filter? One stop or more?

A: B+W does not publicly publish this information in any of their data sheets, but independent testing yielded a loss of approximately 1.5-stops of light when using the B+W high-transmission MRC-Nano Master CPLs.

Q: 4. will this filter fit a sony 24-105 lens hood?

A: This filter will fit the Sony FE 24-105mm f/4 G OSS Lens and you will be able to keep the hood on when it is being used.

Q: 5. The description mentions that it has a thin ring . Others have mentioned that a thin ring prevents the use of a normal lense cap . Also that thin ring prevents the use of another filter to be attached to the front of the UV filter . Does B&W make 72mm filter that addresses these issues ?

A: I have not had any issues with a lens cap with this UV filter in place. The filter works beautifully. As for attaching other filters, I rarely attach other filters but this UV filter does have threading to allow attachment of additional filters. You could also remove this filter pretty easily and attach another filter as needed. Hope that helps..

Q: 6. I have a Canon EF-S 15-85mm lens. Would there be any problem using this filter with the lens hood? There is note in the descriptions that mentions it may not work with bayonet-mounted lens hoods. Anyone have any experience using this with a EF-S 15-85mm?

A: I have a 7D with a EF-S 15-85. There is no issue with this filter and the Canon lens hood (either deployed normally or reversed).

Q: 7. Will this fit the voilander 40mm 1.2

A: It will not. The Voigtlander Nokton 40mm f/1.2 has a 58mm thread. Instead you would need B&H # BWUVXSP58. https://bhpho.to/2MbwZTx

Q: 8. This seems to be recommended for Leica Q2. Will it work with the lens hood in place?

A: Yes the B+W 49mm filter can be used with the hood that comes with the Leica Q2 camera.

Q: 9. Is this filter still including the plastic case? The other B+W filters come in a bag.

A: Yes, B+W 67mm XS-Pro UV Haze MRC-Nano 010M Filter comes with a plastic case and protective foam.

Q: 10. What's the difference between the 007 version and the 010 version?

A: The difference between the B+W 67mm XS-Pro Clear MRC-Nano 007 Filter (B&H # BWCXSP67) and the B+W 67mm XS-Pro UV Haze MRC-Nano 010M Filter (B&H # BWUVXSP67) is the Clear MRC-Nano 007 Filter is a completely clear filter that has no filtration whatsoever, and is used simply for its protection properties and ease of cleaning. The UV Haze MRC-Nano 010M Filter may also be used for protection and cleaning needs, but in addition to the above, it is also designed to absorb/block ultraviolet light, which reduces the bluish cast of daylight, and reduces atmospheric haze. . In bright daylight, near bodies of water or snow, in high atmospheres, and in some urban situations, a UV haze filter may also assist in cutting through atmospheric haze to assist you in obtaining a higher quality image. In regards to urban situations, ALL haze may not be eliminated as some urban haze is due to smog and/or air pollution, and not due primarily to UV reflection.​ Other than one being clear and one having UV haze filtration, the filter size and the brass filter ring would be identical. Both use high-quality Schott glass for increased optical clarity and color fidelity and have a thin brass ring designed to reduce/eliminate vignetting on full-frame lenses up to 24mm wide, or on APS-C sensor lenses up to 18mm wide, or on Micro Four Thirds lenses up to 12mm wide