Product Name: Soft Graduate Neutral Density (GND) ND16 (4 stops / 1f2) Camera Filter Model NO.: GND16 Coating: HMC Customized: Customized Certification: RoHS, CE Lenses Color: Black & Clear Material: Optical Glass Shape: Single-lens Transmittance: 99.5% Type: Convex Lens Usage: Optical, Photography Trademark: MECOREX&OEM Transport Package: Regular Specification: 100mm* 150mm, 150mm*170mm, 180mm*210mm Origin: China HS Code: 9002201000 Product Description HighDefinitionGNDfiltersaremadeofhighdefinitionSchottB270Glass.Opticalgrindingandpolishingonbothsidesensurethehighdefinitionoftheglass.Thankstoouruniquecoatingmethod, ourGNDfiltershavethelowestrefectionintheworld,andeasydailymaintance.GNDFilterGNDfilteristheabbreviationforGraduatedNeutralDensityFilter.Camerasaredifferentincomparisonwiththeperceptionofhumaneyes.Thelightsensitizationofhumaneyesisstronger.Thereforepeoplecaneasilyseelightanddarkareasclearly.However;thelightsensitizationofcamerasisweaker.Theycannotexposurethedetailsofextremelylightanddarksceneriesatthesametime.Inordertoavoidthelossofanydetails,peopleuseGNDfilterstoreducetheexposureofthebrightparts,whichcanbalancethebrightanddarkpartofascenery.FivetypesofGNDFilters:SoftGND,HardGND,MediumGND,ReverseGNDandCenterGND Ultralowcolorcast:O.E’sGNDfiltershaveadevelopedgradualcoating.Thereforelight(ultraviolettonear-infrared)canevenlypassthroughthefilter.Thisglassisdurable,thecolorofresinglasswillfade.Thereasonforcolorcastsisthattheattenuationrangecannotcoverthevisiblelight.Forcamerasthevisiblelightisbetween420~680nm.Thehighertheattenuationrateisthelessvisiblelightcanpassthroughthefilterandthespectrumcurveisnotflat.Ifthelightcanpassthroughevenly,therewillbenocolorcast.ThisrequiredpropertyisfulfilledwiththeRolleifilters.Anti-glaring:Thedouble-sidedanti-reflectioncoatingcanavoidhighreflectionofmetalfilmssuchasaluminumorchromiumfilms.Thedouble-sidedwaterprootanti-glaringandreflectioncoatingcanlowerthereflectionandthereforethefiltercanbeeasilycleaned.HighDefinitionGNDfiltersaremadeofhighdefinitionSchottB270Glass.Opticalgrindingandpolishingonbothsidesensurethehighdefinitionoftheglass.Thankstoouruniquecoatingmethod, ourGNDfiltershavethelowestrefectionintheworld,andeasydailymaintance.GNDFilterGNDfilteristheabbreviationforGraduatedNeutralDensityFilter.Camerasaredifferentincomparisonwiththeperceptionofhumaneyes.Thelightsensitizationofhumaneyesisstronger.Thereforepeoplecaneasilyseelightanddarkareasclearly.However;thelightsensitizationofcamerasisweaker.Theycannotexposurethedetailsofextremelylightanddarksceneriesatthesametime.Inordertoavoidthelossofanydetails,peopleuseGNDfilterstoreducetheexposureofthebrightparts,whichcanbalancethebrightanddarkpartofascenery.FivetypesofGNDFilters:SoftGND,HardGND,MediumGND,ReverseGNDandCenterGND Ultralowcolorcast:O.E’sGNDfiltershaveadevelopedgradualcoating.Thereforelight(ultraviolettonear-infrared)canevenlypassthroughthefilter.Thisglassisdurable,thecolorofresinglasswillfade.Thereasonforcolorcastsisthattheattenuationrangecannotcoverthevisiblelight.Forcamerasthevisiblelightisbetween420~680nm.Thehighertheattenuationrateisthelessvisiblelightcanpassthroughthefilterandthespectrumcurveisnotflat.Ifthelightcanpassthroughevenly,therewillbenocolorcast.ThisrequiredpropertyisfulfilledwiththeRolleifilters.Anti-glaring:Thedouble-sidedanti-reflectioncoatingcanavoidhighreflectionofmetalfilmssuchasaluminumorchromiumfilms.Thedouble-sidedwaterprootanti-glaringandreflectioncoatingcanlowerthereflectionandthereforethefiltercanbeeasilycleaned.HighDefinitionGNDfiltersaremadeofhighdefinitionSchottB270Glass.Opticalgrindingandpolishingonbothsidesensurethehighdefinitionoftheglass.Thankstoouruniquecoatingmethod, ourGNDfiltershavethelowestrefectionintheworld,andeasydailymaintance.GNDFilterGNDfilteristheabbreviationforGraduatedNeutralDensityFilter.Camerasaredifferentincomparisonwiththeperceptionofhumaneyes.Thelightsensitizationofhumaneyesisstronger.Thereforepeoplecaneasilyseelightanddarkareasclearly.However;thelightsensitizationofcamerasisweaker.Theycannotexposurethedetailsofextremelylightanddarksceneriesatthesametime.Inordertoavoidthelossofanydetails,peopleuseGNDfilterstoreducetheexposureofthebrightparts,whichcanbalancethebrightanddarkpartofascenery.FivetypesofGNDFilters:SoftGND,HardGND,MediumGND,ReverseGNDandCenterGND Ultralowcolorcast:O.E’sGNDfiltershaveadevelopedgradualcoating.Thereforelight(ultraviolettonear-infrared)canevenlypassthroughthefilter.Thisglassisdurable,thecolorofresinglasswillfade.Thereasonforcolorcastsisthattheattenuationrangecannotcoverthevisiblelight.Forcamerasthevisiblelightisbetween420~680nm.Thehighertheattenuationrateisthelessvisiblelightcanpassthroughthefilterandthespectrumcurveisnotflat.Ifthelightcanpassthroughevenly,therewillbenocolorcast.ThisrequiredpropertyisfulfilledwiththeRolleifilters.Anti-glaring:Thedouble-sidedanti-reflectioncoatingcanavoidhighreflectionofmetalfilmssuchasaluminumorchromiumfilms.Thedouble-sidedwaterprootanti-glaringandreflectioncoatingcanlowerthereflectionandthereforethefiltercanbeeasilycleaned.