NKC is the leading White Balance Filter for photographers in Korea for years now. Its among the best WB (white balance) filters in the market due to its high quality and affordable pricing.

What is a White Balance Filter for? It helps with the color management of your JPEG photos, reducing workflow and improving productivity, resulting in a stress-free photography experience

While professional digital cameras do an excellent job autofocusing and autoexposing, auto white balance is not likely to give accurate, consistent color under many ambient lighting conditions.
White balance isn’t that much of an issue when making RAW captures as it is easy to adjust when processing the files, though it adds work time. When capturing in JPEG, or RAW + JPEG formats, it is important to have as accurate and consistent color as possible to reduce additional processing and saving of the compressed file.