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1、Nikkorlensletters（尼克尔镜头字母）NikkorlenslogoEDED(Extra-lowDispersionultralowdispersion)isaverycommonlogo,intheNikonabovetheendofthelenshasbeenbasicallyuniversal,itmeansthatthelensusedinEDglassmadeoflenses.Becausethevisiblelight(red,blueandgreenlightofdifferentwavelength.)thecolordiffer
2、ence,throughtheopticallensrefractiveindexisdifferent,cannotconvergeonthesameplaneposition,especiallyinthelongfocallengthtelescope,theshorterwavelengthredandblueeasilyresultedinsignificantdispersion,manyproblemsofdigitalcameraUVtheresulting.EDglasshaslightrefractiveabnormalityrate,s
3、othroughtheEDlenslightstillcanaccuratelyconvergeatthesamepoint,socalledsuperlowdispersion,thismaterialisveryimportanttoimprovethedispersionlensandimprovethesharpnessandcolorperformance,EDlensescanalsobecalledNikonisoneofthespecialskills.SICSIC(Super,Integrated,Coating,supercomposit
4、ecoating),coatingforthemeaningofthelensdonotneedtosayalotofit?Inordertoimprovethemodernlenscolorandbetteropticalperformance,generallyusesamulti-layercoating,coatingandevensomecanto10layers(partoftheFujiSuperDragonlensEBCcoating),andalenscoatingastheacmeofperfection,whichbelongstoth
5、eantireflectionfilm,itcanmakethereflectionlenssurfacepropertyoflenschange,lightmoreeasilytransmissioninsteadofreflection,butalsocanimprovethecolorperformanceofthelens,suchasalenscoloryellow,iscoatedwithalayerofblueantireflectionfilmtocompensatetheeffectofNikon,coatingtechnologyalth
6、oughnorowtothethreeSupermodeloftheworld'smostadvancedtogoinside,buttheperformanceisstillremarkable,suchasthefamousgoldnikkor17-35/2.8EDwide-angleantiglarecapabilityatleasthalfcomesfromtheexcellentcoating.NNhasmanykinds,ifyouseetheoldcameraontheN,the80%isthenew(New)meaning,butthehex
7、agonalhollowbottomNinthenewlensisanewtechnologyofnanocrystallinecoatingNikon(NanoCrystalCoat),theeffectofcoatingthemostistopreventthemirrorreflection,increasedpermeability,suchasthenewNikkor105/2.8microontheuseofsuchtechnology.Onemoreword,becausethesurfaceoftheCCD/CMOSreflectingfil
8、mthanmanyserious,somanyoft
