Ukuphatha lezi zihlungi ze-Lens kuzothuthukisa izithombe zakho ze-DSLR
Emuva ezinsukwini zamakhamera wefilimu, abathwebuli bezithombe abahamba phambili bathatha inamba enkulu yokuhlunga ukubhekana nezimo ezithile zokukhanyisa nokufaka imiphumela. Kodwa, ngokufika kwama- DSLRs nezici zabo ezifana nokulingana okumhlophe , eziningi zalezi zihlungi manje seziphelile. Noma kunjalo, ezinye izihlungi zihlala ziwusizo kakhulu ekufotheni izithombe zedijithali, ikakhulukazi izihlungi ezingcono kakhulu zama-lens wekhamera ye-DSLR.
Izihlungi ezithandwayo kakhulu ziyizihlungi, ezihamba phambili phambi kwamalensi wekhamera ye-DSLR. Lezi zivame ukuba nezindleko ezifanele, kepha kuzodingeka uthenge izihlungi ngobukhulu bomthamo ngamunye wendwangu, olubekwe kumililimitha futhi lungatholakala ngaphambi kwe-lens noma ngemuva kwekhanda lensiza. Ubukhulu bezintambo zamalensi buqala ukusuka ku-48mm ukuya ku-82mm kuma-DSLRs.
Enye into okumelwe uyikhumbule ukuthi noma yiliphi i - lens elibanzi- lens lizodinga izihlungi ze-ultra-slim, ezinciphisa ingozi yokuvignetting emaphethelweni esithombe.
Ngenhlanhla, ngokufika kwe-DSLRs, kunezinhlanzi ezibalulekile kakhulu zokuphatha, kepha nansi engingahlala ngihlala nazo njalo.
Isihlungi se-UV
Ngesikhathi i-UV yelanga imisebe engabangela izinkinga eziningi nge-DSLRs njengoba yenza ngekhamera yefilimu, ukukhanya kwelanga kungakhipha i-hue blueish phezu kwezithombe. Isihlungi se-UV singasilungisa le nkinga ngaphandle kokunciphisa inani lokukhanya elibonakalayo elifinyelela esithombeni sesithombe.
Noma kunjalo, isizathu esiyinhloko sokusebenzisa isihlungi se-UV kuwo wonke ama-lens akho ukuwavikela ekungcoleni, uthuli, futhi - okubaluleke kakhulu - umonakalo wengozi. Uma ungenangqondo ngokwanele ukulahla i-lens futhi iphoqa, uzobe ubheka amadala angamakhulu amadola. Kodwa izihlungi ze-UV ziqala ukusuka ku-$ 22, ngakho-ke izindleko zokuqashisa zizobe zinengqondo kakhulu! Thenga isihlungi se-UV eningi, ngaphandle kwalokho uzobeka ingozi ye-lens flare nge-DSLRs. Uma ngabe ngingakwazi ukuthenga kuphela isihlungi, lokhu kungaba njalo.
I-Polarizer Yesiyingi
Uma unesithakazelo ku-landscape izithombe, isihlungi sokuhlunga kufanele. Ngokumane nje, i-polarizer inciphisa inani lokukhanya eliboniswayo eliya enzwa yekhamera yakho. Ubhakabhaka obuhlaza okwesibhakabhaka bubonakala buhlaza okwesibhakabhaka, futhi ukubonakala kwamanzi kungasuswa ngokuphelele. Ungakhetha inani le-polarization oyengeza ngokuguqula indandatho yangaphandle yesihlungi, ngoba lesi sihlungi sinamasondo amabili, okuhlanganisa i-lens yekhamera, neyendandatho yangaphandle yefomu evulekile yokukhwabanisa. Lokhu kwenezela ukuhogela kwezigridi ukuya kuma-degrees angu-180.
Ukuphazamiseka kwezihlungi zokwehlisa amaphuzu ukuthi kuncishisa kakhulu ukukhanya okufinyeleleka kwenzwa yenkhamera, ngokuvamile ngezimoto ezimbili noma ezintathu f-stop.
Iphuzu elilodwa lokugcina elibalulekile okumele liqaphele: Ungalingeki ukuthenga inketho engabizi "ye-polarizer ehambisanayo." Lezi ngeke zisebenze ngamakhamera ane-autofocus noma asebenzise i-TTL metering (Through The Lens) ... into ekhona yi-DSLRs.
Isihlungi se-Neutral Ukuhlunga
Inhloso kuphela ye-Neutral Density (ND) isihlungi ukunciphisa inani lokukhanya elifinyelela inzwa yekhamera. Lokhu kungasiza kakhulu lapho ukuchayeka okwesikhashana kungenzeki ngaphakathi kwemingcele yokuvula. Isihlungi se-ND sisetshenziswa kakhulu lapho sithombeni amanzi agijima , ngoba kusiza ukwakha isithombe esisimweni esibucayi nesithebula. Isihlungi se-ND singasetshenziselwa ukudlulisela ukunyakaza ngokungeza ukufiphaza kwezihloko ezihambayo nokukwenza izinto ezihambayo, njengezimoto, ezingabonakali nakancane emazweni amasha.
I-filters eyaziwa kakhulu ye-ND iyanciphisa ukukhanya ngamabili (ND4x noma 0.6), amathathu (ND8x noma 0.9), noma amane (ND16x noma 1.2) f-stop. Akungabazeki ukuthi uzothola ukusetshenziswa okuningi kokunciphisa okuningi kunalokhu, nakuba abanye abakhiqizi benza izihlungi ze-ND ezinciphisa ukukhanya ngamaningi ayisithupha.
Isihlungi se-Neutral Isiqu
Ukulingana Okungahambisani Ne-Neutral (GND), noma i-Split, izihlungi ziyi-extra optional, kodwa eyodwa engabonisa ukuthi iyasiza uma ungathandi ukwenza umsebenzi omkhulu wokuthunyelwa ngemuva. Lezi zihlungi zinciphisa ukukhanya phezulu kwesithombe bese ziphothula kahle ukuze zivumele ukukhanya okujwayelekile ukushaya inzwa yekhamera kusuka engxenyeni engezansi yesithombe. Lezi zihlungi zivumela ukuthatha izimbali ngokukhanyisa okukhulu kakhulu, okuvumela kokubili isibhakabhaka nangaphambili ukuthi zivezwe kahle.
Kwenzeka kanjani ukuthi ukuphothula iziqu kanye nokuhlanganiswa kwenzeke ukuthi lesi sihlungi "siyathandeka" noma "sinzima" sihlangene, futhi lesi sici sihluka kakhulu kumkhiqizi sibe umkhiqizi. Udinga ukwenza ucwaningo lwakho ngaphambi kokuthenga lezi zihlungi ngokubheka izibonelo kumawebhusayithi abakhiqizi. Njengama filters e-ND, ama-GND atholakala ezihlukahlukene ze-f-stop settings. Akufanele udinge okungaphezulu kweyodwa kuya kwezintathu f-stop blend.