Ma u baahanahay a UV-filter for camera ah?

UV-filter - filter UV ah. Ujeedada ugu wayn - ilaalinta lenses indhaha ka dhaawac, boodh iyo uskag (waxaa oo dhan si degdeg ah ku baabbi'in siku). Sidoo kale, xubno indhaha sida faafiyo iftiinka ultraviolet markii rasaas waxyaabaha fog. Ka dib markii furta oo film digital, in la barbardhigo isha aadanaha wuu ka nugul yahay in noocan ah ee shucaaca. UV-filter waa mid aad u faa'iido badan ee la sawirayo dhul buuraley ah, waxay ka caawisaa si looga fogaado huurada buluug ah ee sawirada.

gobolka oo dhan ee spectrum ultraviolet ah waxaa loo qaybin karaa saddex safafka: fog - 280 nm oo gaaban (UV-C); dhexdhexaad ah - 320-280 nm (UV-B); iyo proximal ah - 400-320 nm (UV-A). Dareenka qalabka dijitaalka ah waa hooseeyaa filimka, sidaas darteed waxa ay qaadataa band proximal ah, iyo filimka awoodo si uu u xaliyo kala duwan ultraviolet oo dhan (laakiin isha aadanaha ma arki karo ma aha in mid ka mid ah kuwan safafka). Si kastaba ha ahaatee, fursadaha kaamirooyinka film xadidaya awoodda lenses indhaha. UV-filter jeexan shucaaca sida at 320 nm (dhexe iyo kala duwan oo ka fog).

Marka aad dooranayso wax soo saarka noocan oo kale ah waa in aad bilowdo ka dhexroor ee siku. In uu yahay, inuu ka heli taas oo filter waa haboon tahay camera, waxaad u baahan tahay in la ogaado dhexroor gashto dunta ah (waxay muujinaysaa gudaha daboolka). Qiimaha sheyga ku xiran tahay inta ay le'eg tahay. Tan iyo dhexroor UV-filter of 52 mm waa $ 10-15, iyo 77 mm - 30-40 dollar.

filtarrada UV kala qaybsan yihiin afar kooxood oo category:

• Dhexdhexaad - dhexdhexaad ah, midab,
• SkyLight - Pink, waxaa loogu tala galay in la siiyo images of midabo diiran,
• si toos ah UV - ultraviolet,
• Boor - ka dhanka ah carceero ah.

In kasta oo ay kala duwan dibada, goolka kooxdan waa mid ka mid - ilaalinta gashto ka dhanka ah saamayn dibadda, UV iyo midabka qiiq ah. The ugu caansan waa UV-filter iyo Skylight.

Inta badan iibinaya Skylight soo bandhigay sida ugu fiican oo sidaas daraaddeed qaali ah, laakiin saamaynta mid ah midabo kala diiran sawirka waxaa loogu talagalay oo kaliya kaamirooyinka film ku saabsan tiradaasi waxa ay u yareeyaan eber by joogitaanka ee dheelitirka cad midabka.

Marka aad dooranayso wax soo saarka noocan oo kale ah waa in aysan iloobin in shaqada ugu weyn - waa in ay ka saamayn farsamo iyo ilaalinta UV, iwm ilaaliyo siku indhaha - waa sare. amateurs badan oo is waydiiso kartidaada shaandhaynta ee shucaaca ah, sababtoo ah sawirka ficil ahaan waa wax kama (sida ay soo saaraha, filter ilaaliya furta digital). Sida laga soo xigtay sawir sida wax soo saarka ee shirkadaha optics sawir waxaa si fudud kaash ah oo ku saabsan sawir hiwaayadda. Sidaas daraaddeed marar badan ku talinaynaa doorashada mid ka mid ah ama mid kale UV-filter ku salaysan yahay sifooyinka ilaalinta farsamo. Inkasta oo lenses difaaca iyo waxaa loo arkaa jaban, laakiin ha iloobin in gashto kasta - tani waxay ugu horayn waxaa ah Barzakh in gudbinta iftiinka, sidaas darteed waxaa fiican inaad iibsato alaabta ka soo saaraha a sumcad, qalabka tayo sare leh la dhigtay gudbinta iftiinka xooggan.

Isticmaal UV-filtarrada ama aan, waa in isaga qudhiisa go'aan sawir qaade ah hiwaayadda, laakiin in ay qaadaan tallaabooyin si ay u ilaaliyaan siku, waxaa lagama maarmaan ah, maxaa yeelay qiimaha a nidaamka indhaha wanaagsan waxaa laga yaabaa xataa ka badan qiimaha camera laftiisa.