Thuthukisa izithombe zakho ngokukhetha i-lens efanele
Ubude obugxile kuyigama elibalulekile ekuthatheni izithombe kanye nencazelo yalo elula yinkambu yokubukeka kwekhamera ethile yekhamera.
Ubude obugxile bukhomba ukuthi ingakanani indawo esibhekene nayo ikhamera. Ingahlukahluka ezinhlangothini ezibanzi ezingathatha indawo yonke kumafayili e-telephoto angakwazi ukusondeza ngendaba encane ebangeni.
Uma ukudubula nganoma yiluphi uhlobo lwekhamera, kodwa ikakhulukazi ikhamera ye- DSLR , kubalulekile ukuba uqondisise kahle ubude obugxile. Ngolunye ulwazi oluyisisekelo, ungakhetha i-lens efanele yendaba ethize futhi uzokwazi ukuthi yini ongayilindela ngisho nangaphambi kokubheka kusibukeli sokubuka .
Lesi sihloko sizokusiza ukuba uqonde ubude obugxile futhi uchaze ukubaluleka kobude obuseduze ku-digital photography.
Iyini i-Focal Length?
Nansi incazelo yesayensi yobude obugxile: Uma imisebe ehambisanayo yokukhanya ithinta i-lens igxile ezingeni elingapheli, iguqukela ukuze ibumbe iphuzu elibalulekile. Ubude obukhulu be-lens ibanga ukusuka emkhatsini we-lens kuya kule ndawo yokugxila.
Ubude obuningi be-lens buzoboniswa emgqonyeni we-lens.
Izinhlobo zamaLensi
Ama-lensi avame ukuhlukaniswa njenge-angle-wide, standard (noma evamile), noma i- telephoto . Ubude obude be-lens buyakha indawo yokubukwa, ngakho-ke ama-lens amaningi-angle aphethe ubude obuncane lapho ama-telephoto lens enesilinganiso esikhulu sobude.
Nasi uhlu lwezincazelo ezibhekele ubude obunzulu besigaba ngasinye se-lens:
- Ngaphansi kwe-21mm: I-lens enkulu e-wide-angle
- 21-35mm: I-lens-angle lens
- 35-70mm: Lens / Standard lens
- 70-135mm: I-Telephoto ejwayelekile
- 135-300mm (noma ngaphezulu): I-Telephoto
Sondeza vs Prime Lenses
Kunezinhlobo ezimbili zama-lens: okuyinhloko (noma okuhleliwe) nokusondeza.
- I-lens prime izoba nobude obulodwa kuphela (isib. 50mm).
- I-zoom lens izomboza ubude bebanga elibalulekile (isib. 17-40mm).
Izinzuzo ze-Lens Zoom
I-lens yokulondeka ilula ngoba ungashintsha ngokushesha ubude obugxile ngenkathi ubheka umbukiso wokubuka futhi akudingeki uphathe isikhwama sekhamera esigcwele amalensi azungezile. Abathwebuli bezithombe eziningi zedijithali bangazithola ngamalensi ama-zoom amabili noma amabili afaka ububanzi obugcwele obude obude.
Into eyodwa okumele uyihlole, noma kunjalo, ukuthi ubukhulu obunjani obubanzi obufunayo ku-zoom lens eyodwa. Kunamalensi amaningi ahamba ukusuka ku-24mm kuya ku-300mm (nanoma ikuphi phakathi) futhi lokhu kulula kakhulu.
Inkinga ivame ukuyikhwalithi yeglasi kulezi lensi ngenxa yobanzi obubanzi, izakhi ezingaphezulu ukukhanya okumelwe zihambe ngazo. Uma unesithakazelo kwenye yalezi zenzi zamalitha ezinamandla futhi ufuna ikhwalithi yesithombe engcono kakhulu, kungaba ngcono ukuchitha imali engaphezulu kwilensi yekhwalithi eliphezulu.
I-Prime Lens Izinzuzo
Ama-lens aphezulu anezinzuzo ezimbili eziyinhloko: ikhwalithi kanye nesivinini.
Ngejubane, sikhuluma ngokuvula okukhulu kunazo zonke (f / stop) ekwakhiwe lens. Ngesikhathi esingaphansi (inombolo encane, ukuvula okubanzi), ungaphatha isithombe ekukhanyeni okuphansi futhi usebenzise isivinini sokuvala ngokushesha esizoyeka ukusebenza. Yingakho i-f / 1.8 yinto ekhishwe ngamalensi. Ama-lens we-Zoom awakutholi lokhu ngokushesha futhi uma enza, ayabiza kakhulu.
I-prime lens nayo ilula kakhulu ekwakhiweni kunokuba i-zoom lens ngoba kunezinto eziyingcosana zezingilazi ngaphakathi emgqonyeni futhi akudingeki ukuba zihanjiswe ukuze zilungise ubude obugxile. Ingilazi encane ehamba ngayo isho ukuthi kunethuba elincane lokuphazamiseka futhi lokhu kuvame ukunikeza isithombe esicacayo nesicacile.
I-Focal Length Magnifier
Ubude obukhulu be-lens babuyiselwa emuva ezinsukwini ze-movie photography futhi buhlobene nobude obugxile be-lens kumakhamera angu-35mm. (Gcina, engqondweni, leyo 35mm ibhekisela kuhlobo lwefilimu elisetshenzisiwe hhayi ubude obugxile!) Uma unenhlanhla ngokwanele yokuba nomunye we-DSLRs ogcwele uhlaka, khona-ke ubude bakho obugxile ngeke bukhunjulwe.
Uma kunjalo, usebenzisa ikhamera yezitshalo (APS-C) ikhamera, ubude bakho obugxile buzophazamiseka. Ngenxa yokuthi izinzwa zesiklamu zezitshalo zincane kunomdwebo wefilimu engama-35mm, ukukhuliswa kudinga ukusetshenziswa. Ukukhuliswa kuhluka kancane phakathi kwabakhiqizi, kodwa izinga liyi-x1.6. I-Canon isebenzisa lokhu kukhuliswa, kepha i-Nikon isebenzisa i-x1.5 ne-Olympus isebenzisa i-x2.
Isibonelo, kwikhamera ye- Canon yezitshalo zesikhumba, i-lens ejwayelekile ye-50mm iba yi-lens standard ye-80mm lens. (50mm yanda nge-1.6 ye-1.6 ukuze iholele ku-80mm.)
Abakhiqizi abaningi manje benza amalensi avumela lokhu kukhuliswa, okusebenza kuphela kumakhamera wezitshalo zezitshalo. Lokhu kuwusizo ikakhulukazi ekupheleni kwezinto ezikude, lapho ukukhuliswa kungenza lezi lensi zibe yizinga elijwayelekile!