{"product_id":"k-f-concept-variable-nd-filter-nd2-nd400-blue-coated-72mm","title":"K\u0026F Concept Variable ND Filter ND2-ND400 Blue Coated 72mm","description":"\u003ch2\u003eK\u0026amp;F Concept Variable ND Filter ND2-ND400 Blue Coated 72mm | Control bright light as you shoot\u003c\/h2\u003e\n\u003cp\u003eKeep bright scenes manageable while retaining the shutter speed or aperture you want. This K\u0026amp;F Concept variable ND filter reduces the light reaching your camera, with adjustment from ND2 to ND400, so you can adapt exposure as conditions change. It suits photographers and video makers who work in changing daylight and want to control exposure without relying on a fixed-strength filter. For video, that can help you maintain your chosen shutter speed outdoors; for stills, it gives you room to use a wider aperture or a slower shutter in brighter conditions. The variable range is the key advantage here: you can adjust the light reduction rather than swapping between separate ND strengths. It’s a straightforward tool for exposure control, though the title alone doesn’t tell us how its adjustment is operated, so I wouldn’t assume a particular control style.\u003c\/p\u003e\n\u003cdiv class=\"specialist-note\"\u003e\n\u003ch3\u003eSpecialist Note\u003c\/h3\u003e\n\u003cp\u003e72 mm is the filter size, so in practice this is for a lens with a matching 72 mm filter thread. I’d keep that measurement in mind when choosing it; the diameter matters for fit. The blue coating is part of this filter’s stated finish, but I wouldn’t read the word “blue” as a promise of a blue colour effect in your pictures. This suits someone filming outdoors or making a slower-shutter photograph in daylight: adjust the variable ND until the exposure works for the shutter speed or aperture you want. The wide ND2–ND400 range gives you room to adapt, though it’s still one filter size, not a fit for every lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: K\u0026amp;F Concept\u003c\/li\u003e\n\u003cli\u003eFilter type: Variable ND\u003c\/li\u003e\n\u003cli\u003eND range: ND2–ND400\u003c\/li\u003e\n\u003cli\u003eFilter size: 72 mm\u003c\/li\u003e\n\u003cli\u003eCoating: Blue coated\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K\u0026F Concept","offers":[{"title":"Default Title","offer_id":57512769880404,"sku":"KF-01.1404","price":25.81,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/2493\/3716\/files\/KF-01.1404_01.jpg?v=1791588272","url":"https:\/\/www.htf-store.com\/zh\/products\/k-f-concept-variable-nd-filter-nd2-nd400-blue-coated-72mm","provider":"Hard to Find Camera Store","version":"1.0","type":"link"}