{"product_id":"k-f-concept-52mm-variable-nd4-64-cpl-filter-2-6-stops-control","title":"K\u0026F CONCEPT 52mm Variable ND4-64 + CPL Filter - 2-6 Stops Control","description":"\u003cp\u003eIn this review the K\u0026amp;F CONCEPT 52mm Variable ND4-64 + CPL filter is evaluated as a compact, two-in-one solution for photographers who want both neutral density control and polarization without swapping glass. The bottom line: it is best for outdoor shooters who need 2 to 6 stops of light reduction and the ability to cut reflections while preserving color and contrast. Build quality, the CNC aluminum frame and multi-coated AGC glass are the clearest selling points, while the variable ND range and integrated CPL make it a convenient tool for landscape, beach, and portrait work in bright conditions.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable ND 2-6 stops:\u003c\/strong\u003e Provides a smooth reduction from ND4 to ND64 so photographers can control exposure from mildly bright to very bright scenes without changing filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated CPL:\u003c\/strong\u003e Removes unwanted glares from non-metallic surfaces and enhances color saturation and contrast for richer skies and foliage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo X cross on image:\u003c\/strong\u003e Uses updated optics to avoid the cross artifacts common on wide-angle variable NDs, improving image quality at wider focal lengths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImported AGC optical glass:\u003c\/strong\u003e 28 multi-layer coatings deliver low light transmittance loss, waterproofing and scratch resistance to protect the front element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC aluminum adjustable frame:\u003c\/strong\u003e A non-slip frame with marked stops and a putter makes it easy to set and repeat the desired ND level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal 52mm fit:\u003c\/strong\u003e Compatible with any lens sporting a 52mm thread, though users should verify their lens thread size before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis filter is aimed at landscape and outdoor photographers who need quick exposure control and glare reduction in a single accessory. It is particularly useful for beach, portrait and travel shoots where changing weather and reflective surfaces demand both neutral density and polarization.\u003c\/p\u003e\n\u003cp\u003eIt may be less suitable for photographers who require very high ND stops beyond 6 stops or those using ultra-wide lenses who still need to test for any residual edge effects; professionals wanting precise extreme long exposures might prefer dedicated fixed ND filters for absolute consistency.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolid build quality with CNC aluminum frame and reliable feel in hand.\u003c\/li\u003e\n\u003cli\u003eWorks as a true 2-in-1 by combining ND and CPL functions, reducing carry weight and changes in the field.\u003c\/li\u003e\n\u003cli\u003eHigh-quality AGC glass with 28 coatings gives good resistance to water and scratches.\u003c\/li\u003e\n\u003cli\u003eClear value for money for hobbyists and enthusiasts needing 2-6 stops of control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report mixed ease of use with the polarizer adjustment, which can require fine tuning to avoid unintended exposure shifts.\u003c\/li\u003e\n\u003cli\u003eAlthough designed to avoid X cross, very wide-angle setups should still be checked for edge effects in specific shooting conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eVariable ND (ND4-ND64) + CPL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStop Range\u003c\/td\u003e\n\u003ctd\u003e2 to 6 stops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Diameter\u003c\/td\u003e\n\u003ctd\u003e52mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass\u003c\/td\u003e\n\u003ctd\u003eImported AGC optical glass, 28 multi-layer coatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Material\u003c\/td\u003e\n\u003ctd\u003eCNC aluminum alloy, non-slip with adjustable putter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eNo X cross on image, waterproof, scratch-resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe K\u0026amp;F CONCEPT 52mm Variable ND4-64 + CPL filter is a practical, well-built option for hobbyists and enthusiasts who want flexible exposure control and polarization in one piece of glass. It delivers strong value through its quality materials, handy adjustable frame, and useful 2-6 stop range, making it an excellent companion for outdoor and travel photography where convenience and versatility matter most.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my lens?\u003c\/strong\u003e\u003cbr\u003eIt fits any lens with a 52mm front thread; verify the number next to the diameter symbol on your lens before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it for long exposures?\u003c\/strong\u003e\u003cbr\u003eYes for moderate long exposures within the 2-6 stop range, but photographers needing very long exposures may prefer dedicated high-stop fixed NDs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it prevent the X cross artifact?\u003c\/strong\u003e\u003cbr\u003eIt is designed with updated optics to avoid the X cross on images, though very wide-angle setups should still be tested for specific conditions.\u003c\/p\u003e","brand":"K\u0026F CONCEPT","offers":[{"title":"Default Title","offer_id":48602070057179,"sku":"B0BHSMX9WB","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71Bc5bFa-vL._AC_SL1500_e7e3a298-6e68-4d5a-838a-f0cbb65a515a.jpg?v=1778582578","url":"https:\/\/gearmusthave.com\/products\/k-f-concept-52mm-variable-nd4-64-cpl-filter-2-6-stops-control","provider":"GearMustHave","version":"1.0","type":"link"}