This 1- to 5-stop K&F Concept Nano-X Green Multicoated ND Filter 40.5mmfrom K&F Concept Nano-X Green Multicoated ND Filter 40.5mmis a 40.5mm variable neutral density filter providing an adjustable light reduction of 1 to 5 stops. It darkens the entire image evenly, allowing a photograph to be made with a wider aperture or slower shutter speed than normally required. By slowing the exposure time or increasing the aperture, it is possible to control the depth of field and create motion blur, creating a dynamic look for streams, waterfalls, landscapes, and more. This multicoated variable neutral density filter does not affect the color of the image, and it features a waterproof and scratch-resistant coating for durable performance in the field.

Variable 0.3 to 1.5 Optical Density    Green Multicoating    Waterproof Coating    Scratch-Resistant Coating    Darkens Entire Image    Greater Control over Exposure Settings    Allows Wider Aperture

Related Questions and Answers

Q: 1. What does the "green" do?

A: The K&F Concept Nano-X ND2-ND32 Green Multicoated Variable ND Filter's coating is used to neutralize color temperature deviations that occur under certain lighting conditions. This helps with color balance, reducing light loss, and managing reflections that would affect the contrast of the overall image.

Q: 2. Can a lens hood be used with this filter, specifically for a sony 24-70 2.8 v1?

A: No, the Nano-X Variable ND filter will not work on the Sony 24-70mm f/2.8 GM I with the lens hood on. Both the polarizing and variable ND knobs on the filter prevent the lens hood from mounting on the camera. If you use fixed ND filters, you can use the lens hood.

Q: 3. 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: 4. Can I put it on a sigma 30 mm lens?

A: In theory you could with a step down ring, but you'll get vignetting on the edges. I'd recommend getting the correct 52mm filter.

Q: 5. We know the rear filter threads, can we get an official filter thread sizes for the front?

A: The front filter thread on the K&F Concept Nano-X Pro Series CPL+ND2-32 Filter (77mm, 1 to 5-Stop) is also 77mm.

Q: 6. 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: 7. 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: 8. Can the orange lens handles be removed? Thanks

A: The orange handles of the K&F Concept Nano-X Pro Series CPL+ND2-32 Filter (77mm, 1 to 5-Stop) are not made to be easily removed, but they can be removed with a screw driver (purchased separately).

Q: 9. Does lens have lens cover threads?

A: No, this filter has no front threads.

Q: 10. I have a Canon 24-105mm f4L(77mm). I already have a 77mm protective filter on it; with threads, so I can stack another filter. What size ND filter should I order?

A: Protective filters have the same size front and rear threads so a 77mm variable ND would be recommended.