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【Voltage Compatibility】
When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.
【Plug Type】
Our products use Japanese plug types (A or B type).
Please use a conversion adapter if necessary.
【Important Note on Transformers and Adapters】
A transformer adjusts voltage to match your device’s requirements.
A conversion adapter only changes the plug shape and does not adjust voltage.
Using only a conversion adapter without a transformer may result in damage to the product.
【Liability】
We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.
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【Ultra-Low Reflection】The ultra-low reflection ND2-400 filter controls the reflectivity to 0.1%, effectively reducing lens reflections and halo effects, resulting in sharper images and enhanced contrast. While the exterior may be a mix of old and new designs, the internal components are identical.
【Variable ND Filter】The K&F CONCEPT ultra-low reflection ND2-400 filter offers 9 levels of adjustable light intensity from ND2 to ND400, allowing you to adjust the density of the neutral density filter as needed to adapt to various lighting conditions.
【Multi-layer coating】This variable ND filter uses high-quality optical glass and features a double-sided multi-layer coating to effectively reduce reflected light from the filter surface. It also boasts a superior 28-layer water-repellent, oil-repellent, and scratch-resistant coating, making it easy to wipe away any water droplets or dirt.
[Filter Frame] The filter frame thickness is 7.4mm. In actual photographs, there is no vignetting from 19mm onwards, and in videos, there is no vignetting from 17mm onwards.
[Precautions] Variable ND filters are prone to producing X-shaped unevenness when set to the higher settings. The location of the unevenness will vary depending on the type of lens and focal length . If you continue to rotate the filter, the shadow will disappear naturally. This phenomenon is not a quality issue, but a natural physical phenomenon caused by the rotation of the variable ND filter.
K&F CONCEPT 39mm ND2-400 Filter, Variable ND Filter, 0.1% Ultra-Low Reflection, 9-Step Adjustable Light Reduction, Optical Glass, 28-Layer Coating, Water-Repellent, Oil-Repellent, Scratch-Resistant, Ideal for Video Shooting, Nano-Xcel FN721