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K&F XV39 40.5mm Variable ND8-ND128 Filter Nano Coated

5 7 Review(s) KF01.1444
Special
In Stock
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£39.99 £42.91 6% OFF Inclusive of VAT
To United Kingdom and Ireland Expedited Free Shipping 3-5 business days
  • Brand: K&F Concept
  • K&F XV39 40.5mm Variable ND8-ND128 Filter Nano Coated Made by german optical glasses, reduces the intake of light without affecting the overall color balance.
  • KF01.1444
  • SKU: KF01.1444
  • 39.99
Features
  • • Made by german optical glasses, reduces the intake of light without affecting the overall color balance.
  • • Nano coating layer technology, waterproof, scratch-resistant, anti-reflective green coating, effectively prevent from oil, fingerprint, scratch, protect valued lens.
  • • NO "X" cross on images.
  • • Ultra slim rim design preventing wide angle vignetting. Extra tough aviation aluminum frame ensuring durability and jamming prevention.
ND FILTER
Reduces the amount of light entering the lens, thus decreasing camera shutter speed. Useful for situations where motion blur needs to be created (rivers, waterfalls, moving people) or large apertures must be used with flash to avoid overexposure.
Without ND Filter
Use Contrast
With ND Filter
Without ND Filter
With ND Filter
Enables slow shutter speeds to be used to record movement in subjects such as waterfalls, providing a silky smooth affect to flowing water.
Without ND Filter
With ND Filter
Without ND Filter
With ND Filter
NO ND
ND8
ND64
ND1000
No Filter
ND2
ND4
ND8
ND16
ND32
Multiple layer nanometer coating
Reduction of reflection
Scratch Resistant
Nanometer Coating
Enables slow shutter speeds to be used to record movement in subjects such as waterfalls, providing a silky smooth affect to flowing water.
NDnumber Optical density f-stop reduction Fractional transmittance
  0 0 100%
ND2 0.3 1 50%
ND4 0.6 2 25%
ND8 0.9 3 12.50%
ND16 1.2 4 6.25%
ND32 1.50 5 3.13%
ND64 1.8 6 1.56%
ND100 2 623 1%
ND128 2.1 7 0.78%
ND256 2.4 8 0.39%
ND400 2.6 823 0.25%
ND512 2.7 9 0.20%
ND1024/ND1000 3 10 0.10%
ND2000 3.3 11 0.05%
ND4000 3.6 12 0.025%
ND8000 3.9 13 0.0125%
ND32000 4.5 15 0.003%
Comparison
Rating 7 reviews. 10 reviews. 38 reviews. 48 reviews. 48 reviews. 30 reviews.
Price £42.91 £39.99 £61.99 £29.19 £47.99 £49.12 £86.69 £32.99 £79.99 £43.19 £79.69 £39.99
Model KF01.1444 KF01.973 KF01.1063 KF01.1480 KF01.1481 KF01.1477
size
40.5mm 77mm 77mm 67mm 52mm
Transmittance
84% 84%
Multi-Coating
Antireflection
waterproof
scratch-resistant
HD
Filter Material
Optical glass Schott B270 Optical glass Optisch glas Optical glass
Pattern
Filter Thickness
7.3mm 5.5mm 7.3mm 0.13in/3.3mm 0.13in/3.3mm
Shape
Circle Circle Circle Circulaire
Ring Material
Aviation aluminum alloy Aviation aluminum alloy Aviation aluminum alloy Luchtvaart aluminium legering Aviation aluminum alloy
Reviews (7)
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5
jhne92
Since I specialize a little in nature photography, I bought an ND1000 filter some time ago. This is great when the sun is shining, but as soon as the light intensity drops, a smaller filter is required. So I was looking for a 32 and by chance found this adjustable filter. My concerns that there could be aberrations in the pictures were already dispelled after the first pictures. The different levels bring excellent results and the risk of falling when changing the filter does not exist. The example image was taken with ND128 while I was standing in the river with the camera. A filter that falls down there is gone. That's why I installed this filter, set it to ND8, made the camera settings and then switched to ND128. It couldn't be more convenient! Absolute buy recommendation! I am flying to Lisbon in September and will definitely take this filter with me to photograph the sunset over the Atlantic.
jhne92 jhne92 jhne92
19/10/2021
5
Very good 67mm K&F Concept Variable ND8-ND128
The two photos were taken with a Nikon with a kit lens 18-105mm. K&F Concept got it right, as the description says, no X-factor or vignetting. The photos look like they have a slight blue cast, but you can submit that right away. All in all, a good filter. I highly recommend it to photographers looking to slow down their shutter speeds.
Very good 67mm K&F Concept Variable ND8-ND128 Very good 67mm K&F Concept Variable ND8-ND128
23/10/2021
5
The ND8 to ND128 filter covers a very useful range. There is no visible banding and very little colour change. More test are required to determine the performance in greater detail and different conditions, but I am impressed with the initial results, which show good consistency and accuracy of markings on the filter ring.
24/08/2021
5
Great quality glass. The price was reasonable. The variable filter provides extra flexibility and saves space while travelling. This is key for me as I travel a lot and like to travel as light as I can. I did not experience any chromatic aberration, loss of definition or the dreaded X.

Overall great product.
24/08/2021
5
I wanted to try some daytime long exposure photography and didn’t want to spend a fortune. Really happy with the build quality and - more importantly- the quality of the images.
20/08/2021
FAQs
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Specification
Filter
size 40.5mm
Transmittance
Multi-Coating
Antireflection
waterproof
scratch-resistant
HD
Filter Material Optical glass
Pattern
Filter Thickness 7.3mm
Shape Circle
Ring Material Aviation aluminum alloy