Canje-canje abu ne da ba makawa a cikin tsarin daukar hotoruwan tabarau na ganiMatsalolin da aka saba fuskanta sun haɗa da rashin daidaiton chromatic, rashin daidaiton sphere, astigmatism, lanƙwasa filin, da karkacewar.
Nau'ikan kurakurai da suka bayyana sun bambanta sosai dangane da yanayin haske, abin da ake ɗauka, da kuma buƙatun tsari na yanayin ɗaukar hoto daban-daban. Fahimtar da koyon yadda ake guje wa kurakurai a yanayi daban-daban na iya inganta ingancin hoto sosai.
A ƙasa, za mu bincika hanyoyin magance matsalar ta hanyar amfani da hanyoyi daban-daban na magance ta da kuma takamaiman buƙatunsu:
1.Ɗaukar hoto
Ana siffanta ɗaukar hoto ta hanyar wani abu mai haske, yanayin bango mara kyau, da kuma girman jikin halitta. Hasken da ake amfani da shi na iya zama na halitta ko na wucin gadi. Matsalolin da aka saba gani sun haɗa da rashin siffar siffar ƙwallo, suma, karkacewa, da kuma rashin siffar ƙwallo.
Daukar hoto yawanci yana buƙatar babban buɗewa don ƙirƙirar bokeh, amma wannan kuma babban abin da ke haifar da karkacewar siffar ƙwallo. Lokacin amfani da ruwan tabarau mai faɗi, dakatar da tsayawa 1-2, kamar canzawa daga F2.8 zuwa F4, na iya inganta karkacewar siffar ƙwallo da lanƙwasa filin sosai.
A guji amfani da ruwan tabarau mai faɗi-faɗi don ɗaukar hotunan kusa ko ɗaukar hotunan rabin jiki. Lokacin amfani da ruwan tabarau mai faɗi-faɗi don ɗaukar hotunan cikakken jiki, yi ƙoƙarin sanya abin da ke ciki (musamman idanu) a tsakiyar firam ɗin, nesa da gefuna.
Bugu da ƙari, yana da mahimmanci a guji fuskantar gashin mutum ko gashin ido kai tsaye daga tushen haske mai ƙarfi. Hasken baya mai ƙarfi zai ƙara yawan aberration na chromatic da astigmatism.
Za ka iya amfani da hasken baya na gefe tare da hasken cikewa don rage bambanci tsakanin abin da ke ciki da kuma bayan gida. Idan akwai tushen haske a bango, a guji sanya shi a gefen hoton don rage tasirin suma.
Maganin guje wa rashin daidaituwa a cikin daukar hoto
2.Ɗaukar hoton shimfidar wuri
Ɗaukar hotunan shimfidar wuri yana da alaƙa da faffadan fage na gani, buƙatar cikakken haske game da hoto, wurare da yawa masu bambanci, da kuma hasken halitta (haske mai ƙarfi da rana da kuma rashin haske da dare). Matsalolin da aka saba gani sun haɗa da karkacewa, lanƙwasa filin, rashin daidaituwar chromatic, rashin daidaituwar siffar ƙwallo, da kuma suma.
Don ɗaukar hotunan yanayin ƙasa na yau da kullun, dakatar da buɗewar zuwa F8-F11 zai rage karkacewar siffar ƙwallo, karkacewar siffar chromatic, da lanƙwasa filin, wanda ke tabbatar da kaifin hoton gaba ɗaya. A guji amfani da matsakaicin buɗewa ko ƙananan ramuka masu yawa, kamar F16 da ƙasa, domin waɗannan za su haifar da rarrabuwa, rage kaifin, kuma su haifar da hotuna masu duhu da kurakurai.
Lokacin ɗaukar hoto tare da wani abu mai kama da ultra-ruwan tabarau mai faɗi, a fifita ruwan tabarau masu kusurwa mai faɗi sosai don tabbatar da layukan gini madaidaiciya da gefunan hoto masu kaifi. Lokacin yin rubutu, sanya iyakokin da suka bambanta sosai (kamar sararin sama ko shimfidar tsaunuka) a tsakiyar sama ko ƙasan firam ɗin, nesa da gefunan da suka yi tsauri, don rage rashin daidaituwar gefuna. Amfani da murfin ruwan tabarau na iya hana haske mai ƙarfi shiga ruwan tabarau kai tsaye, rage walƙiya da haɓaka rashin daidaituwa.
Lokacin ɗaukar hoton sararin samaniya na dare, a fifita amfani da babban gilashin tabarau mai faɗi-faɗi don samun ingantaccen iko kan canje-canjen taurari; a guji amfani da matsakaicin buɗewar ruwan tabarau na zuƙowa don ɗaukar hoton sararin samaniya na dare, domin wannan zai sa a ga komowa sosai.
Mayar da hankali kan rashin iyaka da sanya taurari a tsakiyar firam ɗin na iya rage tasirin taurari da ke haifar da suma. Idan gefuna masu launi suka bayyana a kan taurari, kunna gyaran chromatic a cikin kyamara don danne rashin daidaiton chromatic kafin lokaci.
Amfani da na'urar ɗaukar hoto ta tripod da kebul yayin ɗaukar hoto na iya hana duhun da girgiza kyamara da kurakurai ke haifarwa. Kashe rage hayaniyar da ke ɗaukar hoto na dogon lokaci a kyamararka, domin rage hayaniyar wasu samfura na iya matse bayanai da kuma ƙara yawan hayaniyar; ana iya amfani da rage hayaniyar software wajen sarrafa su bayan an gama aiki.
Maganin guje wa rashin daidaituwa a cikin daukar hoto na shimfidar wuri
3.Daukar hoto na Macro
Ana siffanta ɗaukar hoto ta hanyar wani abu da aka saita, hasken da za a iya sarrafawa, da kuma neman cikakken haske game da hoto. Duk da haka, canje-canjen da ke iya faruwa, kamar su karkacewar siffar jiki, lanƙwasa filin, astigmatism, da kuma karkacewar siffar jiki, suna ƙaruwa a ƙarƙashin yanayin babban.
Don ɗaukar hoto na macro, ana ba da shawarar amfani da ruwan tabarau na macro na musamman, wanda aka inganta don ɗaukar hoto na kusa kuma yana gyara lanƙwasa filin da astigmatism. Idan aka kwatanta da amfani da ruwan tabarau na baya ko na zuƙowa don ƙara girma,ruwan tabarau na macrorage karkacewa da rashin daidaituwar launuka masu haske sosai.
A halin yanzu, daukar hoto na babban faifai ya ƙunshi zurfin fili mai zurfi, wanda yawanci yana buƙatar ƙaramin rami don samun isasshen kaifi kuma yana taimakawa wajen rage kurakurai. Duk da haka, ya kamata a mai da hankali kan tasirin diffraction, wanda zai iya buƙatar zurfin faifai. Ana ba da shawarar a ba da fifiko ga ruwan tabarau na macro waɗanda ke da halayen apochromatic don danne rashin daidaituwar chromatic daga hangen nesa.
Bugu da ƙari, amfani da haske mai laushi zai iya rage bambancin launi na gefuna masu babban bambanci na abin da ake magana a kai; lokacin da ake mai da hankali, zaɓi tsakiyar hoton, kuma sanya babban abin da ake magana a kai na ɗaukar hoto a tsakiyar hoton gwargwadon iyawa don rage tasirin rashin daidaituwar gefen; don babban tsawon lokacin da ake magana a kai, zaku iya amfani da mai da hankali kan yanki don rama ɓarnar gefen da lanƙwasa filin ya haifar.
Maganin guje wa rashin daidaituwa a cikin daukar hoto na macro
4.Tsarin gine-gine da kumaina cikipdaukar hoto
Ɗaukar hoto ta gine-gine yana da alaƙa da bin diddigin layukan gine-gine madaidaiciya, daidaiton daidaito, da cikakkun bayanai a cikin hoton. Hasken na iya zama na halitta ko na wucin gadi, kuma yana iya fuskantar kurakurai kamar karkacewa, lanƙwasa filin, rashin daidaituwar chromatic, da astigmatism.
Gilashin jujjuyawar karkata su ne zaɓin da aka fi so don ɗaukar hotunan gine-gine. Suna iya gyara karkacewar hangen nesa gaba ɗaya da karkacewar ganga/ƙafafun ta hanyar canza ko karkatar da axis na gani, yayin da suke kawar da lanƙwasa filin, suna tabbatar da cewa tsakiya da gefuna na hoton suna daidai da kaifi, don haka suna guje wa kurakurai na tsakiya daga hangen nesa.
Yin amfani da wani abu mai kama da ultra-ruwan tabarau mai faɗizai iya kama sarari, amma yana da saurin murƙushe ganga. Lokacin harbi da ruwan tabarau mai faɗi, ana ba da shawarar a dakatar da buɗewar zuwa F8-F11 don danne lanƙwasa filin da rashin daidaituwar chromatic.
Lokacin da ake ɗaukar hotunan gine-gine daga ƙasa ko sama, yi ƙoƙarin kiyaye matakin kyamara tare da layukan ginin don rage karkacewar hangen nesa. Idan ba zai yiwu a kiyaye matakin kyamara ba, ana iya amfani da kayan aikin gyara hangen nesa a lokacin da ake sarrafa su.
Lokacin da ake tsara hotunan gine-gine, a tabbatar cewa manyan layukan ginin (kamar bango da firam ɗin tagogi) suna daidai da iyakar firam ɗin don guje wa layukan da ke bayyana a gefen hoton.
Yi amfani da haske mai laushi don ɗaukar hotunan gine-gine na cikin gida don rage astigmatism da ƙarancin haske ke haifarwa, yayin da kuma rage babban bambanci na gilashi/ƙarfe da kuma rage rashin daidaituwar chromatic. Don ɗaukar hotunan gine-gine na waje, sanya murfin ruwan tabarau don guje wa walƙiya da ƙara girman haske da haske mai ƙarfi ke haifarwa kai tsaye a cikin ruwan tabarau.
Magani don guje wa rashin daidaituwa a cikin ɗaukar hoto na gine-gine da na ciki
5.namun daji dastashoshin jiragen ruwapdaukar hoto
Hotunan namun daji da wasanni galibi suna amfani da ruwan tabarau na telephoto. Ana siffanta yanayin da abin ya faru da saurin motsi na mutumin, wanda ke buƙatar saurin bin diddigin hankali, kuma hasken na iya zama mai ƙarfi ko mara ƙarfi. Matsalolin da aka saba fuskanta sun haɗa da suma, astigmatism, rashin daidaituwar chromatic, da kuma rashin daidaituwar sphere.
Lokacin da ake ɗaukar hotunan namun daji/wasanni, a ba da fifikoGilashin telephototare da abubuwan da ba su da yawa don rage rashin daidaituwar chromatic yadda ya kamata. A cikin hasken waje mai ƙarfi, dakatar da buɗewar da tsayawa 1-2, misali, daga F2.8 zuwa F4, na iya inganta kaifi na tsakiya da gefuna sosai, danne surutu da astigmatism, da kuma inganta daidaiton autofocus.
Idan ana ɗaukar hotunan wasanni a cikin ƙaramin haske kuma ana buƙatar babban buɗewa, zaɓi buɗewar ruwan tabarau ta biyu mafi girma (kamar F2.8). Idan aka suma, a tsaya ƙasa zuwa F3.5 don daidaita yawan hasken da ake sha da kuma sarrafa rashin daidaituwa. Kunna yanayin bin diddigin kyamarar mai sauri yana tabbatar da cewa an mayar da hankali kan abin da ke motsawa, yana rage rashin daidaituwa da matsalolin da ba a mayar da hankali ba ke haifarwa.
Bugu da ƙari, amfani da na'urar riƙe ruwan tabarau ta telephoto + tripod/monopod na iya rage girgiza ruwan tabarau da kuma guje wa astigmatism da girgiza ke haifarwa; shigar da murfin ruwan tabarau na iya hana hasken rana kai tsaye bugawa ruwan tabarau lokacin da ake harbi a waje, yana rage haske da rashin haske; lokacin harbin tsuntsaye a cikin masu tashi/masu saurin gudu, yi ƙoƙarin cika tsakiyar firam ɗin da abin da abin ya shafa don rage tasirin rashin daidaituwar gefen.
A ƙarshe, domin guje wa matsalolin rashin daidaiton ruwan tabarau, da farko kuna buƙatar fahimtar ruwan tabarau da kuke amfani da shi. Kowace ruwan tabarau tana da mafi kyawun kewayon aiki. Gwada ruwan tabarau ɗinku a gaba don tantance tsawon mai da hankali ko buɗewa inda aka fi samun kurakurai, kuma ku guji su yayin ɗaukar hoto.
Yana da mahimmanci a lura cewa gyaran gani na kurakurai (zaɓin ruwan tabarau, dakatar da buɗewa, daidaita axis na gani) abu ne mai mahimmanci, yayin da diyya bayan sarrafawa kawai ƙari ne; wuce gona da iri bayan sarrafawa zai haifar da asarar cikakkun bayanai na hoto.
Lokacin Saƙo: Yuni-09-2026
