Chromatic aberration a hotuna

Chromatic aberration - wani irin image hargitsi tasowa daga ajizanci na kimiyyan gani da hasken wuta. Wannan sabon abu ne saboda da watsawa na haske kamar yadda ya wuce ta cikin ruwan tabarau. Shi ne saboda gaskiyar cewa haskoki da ciwon daban-daban wavelengths (launi daban-daban) da daban-daban Refractive index. White haske ya bazu a cikin bakan dukkan launuka, da kuma launuka suna refracted a kusurwoyi mabambanta da kuma mayar da hankali a kan daban-daban jirage.

Chromatic aberrations sau da yawa kai ga bayyanar launi kwane-kwane na spots da ratsi, wanda rage image sharpness da kuma musamman m a mika mulki bambanci abubuwa. Kyakkyawan misali shi ne a itace, ko wani gini harbe kan bango na rana sama. Mafi karfi da wannan aibi ne da aka nuna a bude budewa.

Modern ruwan tabarau (watau ruwan tabarau samar chromatic aberration) yana amfani da low-watsawa abubuwa da cewa ba kasa refraction da kuma bayarda hoto. A Nikon ta ruwan tabarau ana denoted by Ed (Extra-Low Watsawa) ãyã. A saboda wannan dalili aka yi amfani aspherical ruwan tabarau, barin wani hoto tare da wani karami yawan irin lahani. Akwai ma kyamarori da atomatik iko da aberrations.

Amma idan wani data kasance ruwan tabarau har yanzu na samar da wadannan hargitsi, akwai wasu hanyoyin da za a magance su. Za ka iya amfani tace, edit hotuna a daya daga cikin Editocin, ko yin amfani da wani toshe-suppressing chromatic daɗaɗɗa. Yadda za a cire wadannan kayayyakin gargajiya ta amfani da Adobe Fhotoshop shirin da sauri da kuma sauƙi? Daya daga cikin zažužžukan da aka nuna a kasa.

Bude da albarkatun fayil a Photoshop, shi ne tsince Adobe kamara Raw. Next, zuwa Lens gyare-gyare tab. A siga Defringe saka All gefuna, sa'an nan da bakuna ne kasa mai haske. Yanzu fara motsi da sliders - na farko Red / Cyan har sai Fade blue Geza, sa'an nan Blue / Yellow har daidai lokacin da launi na areola zai bace. Duk da photo a shirye.

Photos a JPEG format za a iya edited da irin tata matsayin karkatar - Lens Gyarta. Yana da sauki rabu da chromatic aberration da kuma amfani da shirin Adobe Lightroom. A amfani da karshen ne cewa ta hanyar zalunta guda harbi, za ka iya amfani da wannan saituna ga dukan jerin tare da aiki tare.

A mafi sauki, amma ba kullum daidai hanyar cire wadannan m kayayyakin gargajiya - don canja wurin hoto zuwa baki da fari format ko farkon harba a baki da fari. Bugu da kari, da sanin cewa ruwan tabarau shan wahala daga irin wannan drawback, shi wajibi ne don kauce wa Shots a bude.

Da aka fi faruwa a cikin chromatic aberration ruwan tabarau da ciwon manyan multiplicity na da zuƙowa. The abu ne cewa, a daban-daban da hankali tsawo, wadannan hargitsi aka bayyana a cikin hanyoyi daban-daban, shi ne musamman wuya da haka lissafi da kuma rama domin duk yiwu lahani a cikin irin wannan hadadden makirci. Wannan shi ne dalilin da ya sa ruwan tabarau da tsayayyen mai da hankali tsawon, ba mafi hoto da kuma yawanci yafi tsada fiye da "Zuma".

Akwai sauran aberrations na Tantancewar tsarin. Lokacin amfani da wani mai siffar zobe ruwan tabarau da ciwon mai siffar zobe aberration saboda da bambanci a cikin rarraba da haske a tsakiyar da kuma a kan gefuna da ruwan tabarau. Bayyana ta da aibi a cikin lubrication tunatarwata Halo. Don sa image smearing da aberrations kamar coma da astigmatism. Wani kowa aibi, musamman halayyar da fadi da-kwana da kuma telephoto ruwan tabarau - Tantancewar murdiya cewa ma exaggerates ji na da firam zurfin. An bayyana a cikin curvature na madaidaiciya Lines da kuma iya zama convex da concave.

Mai aberrations a halin yanzu shi ne, ba wuya a gyara a cikin hoto Editocin. Amma wani lokacin, musamman sanin ta fasahar, yana da sauki ga la'akari da su a lokacin da harbi da yiwu kauce wa miyagun kyamara kusurwa.