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K&F Concept HD Putter 49mm ND2-ND400 (9 Stop) Variable ND Filter, Adjustable Waterproof/Scratch Resistant for Camera Lens (Nano-X II)

5 2 Review(s) KF01.1458
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£42.17 £114.69 63% OFF
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  • Brand: K&F Concept
  • Buy K&F Concept k&f concept hd putter 49mm nd2-nd400 (9 stop) variable nd filter, adjustable waterproof/scratch resistant for camera lens (nano-x ii) online, £42.17 free shipping to UK.
  • KF01.1458
  • SKU: KF01.1458
  • 42.17
  • • 【Import Optical Glass】This ND filter made by Japanese import top optical glass, both galss side with coating , total 32 multi-layer coating, effectivly reduced reflection from filter itself and glaring , ensuring high quality image.
  • • 【Putter Design】This filter frame designed a putter can help you accurately adjust the stop, for video shooting user can automatically adjust the stop via auxiliary tools, each stop from ND2 to ND400 be marked on frame conveniently for 360 degree rotated to adjust the stop, multi-scene application.
  • • 【Waterproof & Scratch Resistant】 Both glass sides of K&F Concpet ND filter with multi-layer waterproof , oil-proof and scratch resistant coating, protecting the nd filter from all round, suitable for adventure using.
  • • 【No Vignetting & Dark Corner】For the filter designed with ultra wide-angle design, the ultra slim frame only 7.6mm, supporting in 16mm telephoto and wide angle lens no vignetting , due to the different in lens type and focal length so this filter might be met dark"X" cross , this isn't quality problem , it can disappear via rotating the filter.
  • • 【Note】Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "ø" (diameter) symbol.
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Reviews (2)
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Very well made high quality filter from a brand I have used before. It's slim, waterproof and has an anti scratch coating. Variable slider allowing you go to from ND2-400 easily to make your photo the desired outcome you want. Nicely packaged aswell.
VND Filters are tricky, and mileage may vary based on a lot of factors.

In optics, no matter how many tests you run, each one of the elements before the camera sensor will play a role on the outcome, especially when dealing with mid range filters.

K&F makes a lot of good gear at a reasonable cost, fixed ND filters are more predictable as VND Filters limit the light that passed in a similar way a CPL does, but between two optical layers, so the way the light then reflects on your lenses, and each one of its elements, then on your sensor, is a little bit unpredictable.

There is no color cast on my tests with this VND filter, and performance is good between 0-80% of ND Power, which would roughly be consistent between 1 and 7.5 stops of light.

Now, going beyond that, the dreaded cross showed on my viewfinder, took a couple of shots and confirmed the issue, however it was VERY SLIGHT, but got really north of 90%.

Now, i switched the filter to a different lens, one with a step up ring (natively 77mm, stepped to 82mm) and there was no cross until say 95% ND power, this leads me to believe that as expected, at this price range, results may vary, i find it very usable up to 95% on both the lenses i tested, as the issue can be fixed even for my native 82mm in post as vignetting was uniform on all 4 corners up to 90%, beyond that, yes, it's pretty unusable.

There's good value, good construction, good presentation on this product, unfortunately lost a star due to not being able to cover the whole ND range that was advertised and not being able to be consistent across different lenses, still a good buy and a solid purchase at this price point.

These images belong to K&F Concept end users.

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As K&F Concept ND2-ND400 filters adjusts the amount of light that can pass through with polarizing glass, a colour cast can't be avoided for all the variable ND filters on the market. However, K&F Concept variable ND filters are made by the best coating technology, which reduces the effect of the polarizing film on image color. *Based on our professional test, the colour cast of K&F Concept ND2-ND400 filters is around 290k while the industry standard is 500k. 
To avoid dark corners, K&F Concept ND2-ND400 filters are designed in ultra-wide construction so the front side of the ND filter is one size larger than the camera lens. It is recommended to use a lens hood of a larger size. 
First, K&F Concept ND2-ND400 lens filter allows changing shutter speed based on the effect you want with the best sensibility and the same aperture. Second, K&F Concept ND2-ND400 lens filter allows creating a blurred background with a large aperture while the shutter speed remains the same. Third, K&F Concept ND2-ND400 lens filter is designed to prevent overexposure and maintain image purity and quality at the same time. *Like a zoom lens, the variable nd filters are suitable for multiple shooting situations. If you're looking for perfect image quality, a fixed ND filter is recommended. 
K&F Concept ND2-ND400 lens filter controls the amount of the light that enters into camera lens with two sets of polarizing glass of high transparency. 
From 1-5 stops, there will be a slight X cross for lens under 24mm. An X cross will appear at the highest stop and can be removed by rotating the filter ring, which is a normal situation instead of a quality issue.