Umngxuma omkhuluilensi yeliso lentlanziineempawu zomngxuma omkhulu kunye ne-engile yokubukela ebanzi kakhulu, enokuthi ibambe imifanekiso ebanzi kakhulu. Inezibonelelo ezikhethekileyo kunye nokusetyenziswa kobuchule kwimifanekiso yangaphakathi kwaye inokuzisa impembelelo enamandla yokubona kumfanekiso.
1.Iimeko zokusetyenziswa kwelensi ye-fisheye enkulu evulekileyo kwifoto yangaphakathi
Iilensi zefisheye ezinkulu ezivulekayo zifanelekile kwiindawo zangaphakathi ezinesithuba esincinci. Iimpawu zazo ezibanzi kakhulu kunye nesithuba esikhulu zinokuphucula amandla okudubula kwiindawo ezikhanyayo kwaye zinezicelo ezikhethekileyo kwiifoto zangaphakathi. Okulandelayo, makhe sijonge iimeko eziqhelekileyo zokusetyenziswa kweelensi zefisheye ezinkulu ezivulekayo kwiifoto zangaphakathi.
A.Uyilo lwezakhiwo kunyesisantyapi-hotography
Iilensi zefisheye ezinkulu ezivulelekileyo zihlala zine-engile yokubukela eyi-180° okanye ebanzi nangakumbi, enokuthi ibambe indawo ebanzi kwindawo encinci kakhulu yokudubula, ngelixa iphucula ingqiqo yendawo kunye neguquguqukayo yomfanekiso ngesiphumo esinamandla sokuphambuka. Olu phawu lufanelekile ngokukodwa kwiindawo zokudubula ezifana nezakhiwo zangaphakathi, uyilo lwendawo yangaphakathi, kunye neenkcukacha zokuhombisa.
Umzekelo, xa kufotwa iipaseji zangaphakathi okanye amagumbi, iilensi ze-fisheye zinokolula imiphetho kwaye ziyidibanise embindini, zidale isiphumo sokujonga esigqithisileyo, zenze umfanekiso ubonakale uvulekile ngakumbi kwaye unemilinganiselo emithathu.
B.Ukudubula okungaphakathi ngaphakathi
I-engile yokubukela ebanzi kakhulu yomngxuma omkhuluilensi yeliso lentlanziifanelekile kakhulu ekuthatheni iifoto zepanoramic zangaphakathi, ingakumbi xa kufuneka uthwebule ingaphakathi legumbi okanye isakhiwo sonke.
Umzekelo, ilensi yefisheye ingagubungela igumbi lonke ngaxeshanye, kwaye ungafumana umbono opheleleyo ngaphandle kokuhambisa ikhamera. Lo msebenzi usetyenziswe kakhulu kwi-VR panoramic photography, kwi-smart homes, nakwi-robot navigation.
Ukusetyenziswa kwelensi ye-fisheye enkulu evulekileyo kwifoto ye-panoramic yangaphakathi
C.Ukusebenza komfanekiso kwiindawo ezikhanyayo eziphantsi
Iilensi zefisheye ezinkulu ezivulekayo zihlala zinexabiso elikhulu le-f-stop, elizivumela ukuba zigcine umgangatho womfanekiso olungileyo kwiimeko zokukhanya okuphantsi, nto leyo ebaluleke kakhulu kwiifoto zangaphakathi. Olu phawu lufanelekile kakhulu kwiindawo eziqhelekileyo ezikhanyayo eziphantsi ngaphakathi, njengamagumbi okuhlala amnyama, ngaphakathi kwiindawo zokutyela ebusuku, okanye kwiindlela ezikhanyayo eziphantsi. Ukongeza, uyilo olukhulu lwe-aperture lweelensi zefisheye lukwanceda ukuphucula ukukhanya nokucaca komfanekiso.
D.Imifanekiso yeziganeko kunye needokhumentari
Iilensi ezinkulu zefisheye ezivulelekileyo zikwasetyenziswa rhoqo kwimifanekiso yeziganeko kunye neyombhalo. Zifanelekile ukuthatha iifoto zamaqela okanye izigcawu ezifuna iirekhodi ezipheleleyo zokusingqongileyo (ezifana noyilo lweholo lesidlo). Iilensi ezinkulu zefisheye ezivulelekileyo zisetyenziswa kwimitshato, kwiipati, kwiikonsathi nakwezinye iziganeko.
Ukuvulwa kwazo okukhulu kunokuqinisekisa isantya se-shutter ekukhanyeni okuphantsi, kwayeiliso lentlanziumbono ungabamba umoya kunye nokusebenzisana kwabantu ngaxeshanye. Umzekelo, xa ufota iziganeko zangaphakathi, umbono we-fisheye + ukudubula okuqhubekayo okukhawulezayo kunokuqandisa umzuzu wokuphosa iipetali kunye neeribhoni, kuphucula imvakalelo enamandla yomfanekiso.
Iilensi ezinkulu zefisheye ezivulekayo zihlala zisetyenziswa kwimifanekiso yeziganeko kunye needokhumentari
E.Ezorhwebo kunyepimvelisopi-hotography
Iilensi zefisheye ezinkulu ezivulelekileyo zingasetyenziselwa ukufota imifanekiso yentengiso yangaphakathi kunye nemveliso. Isiphumo sokugqwetheka kweelensi zefisheye sinokuzisa umbono okhethekileyo kunye nesiphumo sokugqwetheka komfanekiso, okwenza imifanekiso yangaphakathi ibe nesiphumo sokubonakalayo esikhethekileyo. Esi siphumo singasetyenziselwa ukuqaqambisa izinto ezithile kumfanekiso okanye ukudala impembelelo ebonakalayo ephawulekayo.
Umzekelo, ukuphambuka kwe-fisheye kungasetyenziselwa ukuqaqambisa ubungakanani beempahla (ezifana neemveliso ze-elektroniki ezincinci, ubucwebe), okanye ukudibanisa imeko-bume ukubonisa ukusetyenziswa kweemeko zemveliso.
F.Imifanekiso yobugcisa yokudala
Isiphumo sokugqwetheka kwelensi enkulu yefisheye evulekileyo sinokuzisa iziphumo ezibonakalayo ezigqithisileyo nezingaqhelekanga kwimiboniso yangaphakathi, sifaka ulwazi lobugcisa kunye nobuchule kwiifoto zangaphakathi, nto leyo edala impembelelo ebonakalayo enamandla.
Umzekelo, ngokusebenzisa i-barrel distortion yelensi ye-fisheye, ungolula imilenze okanye imvelaphi xa uthatha imifanekiso ukuze wenze imvakalelo engaqhelekanga; kwindawo egudileyo yomhlaba okanye esipilini, ilensi ye-fisheye inokufota imifanekiso ekhethekileyo ebonisiweyo ukuze kuphuculwe umdla womfanekiso.
Ngamafutshane, umbono we-engile ebanzi kakhulu kunye nesiphumo esingaqhelekanga sokuphambuka kwe-aperture enkuluilensi yeliso lentlanziikwazi ukuthwebula iinkcukacha kunye nomoya weendawo zangaphakathi ekunzima ukuziveza ngeelensi zemveli. Nokuba kukufota okune-panoramic okanye ubugcisa, ilensi ye-fisheye inokubonelela ngemiphumo ebonakalayo emangalisayo.
Usetyenziso olulodwa lweelensi ze-fisheye ezinkulu ezivulekileyo
2.Amanyathelo okuzikhusela ekusebenziseni iilensi ze-fisheye ezivuleke kakhulu
Nangona iilensi ze-fisheye zinika amathuba amaninzi okudala, iziphumo zazo zokuphazamiseka zinokubangela imingeni ethile. Ke ngoko, abafoti kufuneka babe nobuchule kunye namanyathelo okuzikhusela xa besebenzisa iilensi ze-fisheye:
Nika ingqalelo ekulawuleni ukugqwetheka kwezinto: Ukugqwetheka kweelensi ze-fisheye kubonakala kakhulu emaphethelweni omfanekiso. Umfoti kufuneka alungise indlela ebhalwe ngayo ngaphambi kokuba athathe imifanekiso, aqinisekise ukuba into ekuthethwa ngayo ibekwe embindini womfanekiso, aphephe ukubeka izinto ezibalulekileyo kufutshane kakhulu nomphetho womfanekiso, kwaye aphephe izinto ezisemaphethelweni eziphazamisa ukugxila.
Kuphephe ukuzolula kakhulu: Xa uthatha imifanekiso, ubuso bomntu okufutshane nelensi buya kubangela ukuguguleka okukhulu, ngoko ke kufuneka uyisebenzise ngononophelo. Kwimifanekiso yemifanekiso, ilensi enkulu yefisheye evulekileyo ifanelekile ngakumbi ekuthatheni imifanekiso yomzimba wonke okanye yokusingqongileyo.
Nika ingqalelo kubunzulu bentsimi kunye nokukhetha ingqwalaselaNangona umngxuma omkhulu ungawufiphalisa umva, ubude be-focal lens ye-fisheye bufutshane kakhulu kwaye ubunzulu bokwenyani bentsimi bubanzi, nto leyo efuna ugxininiso oluchanekileyo kumxholo (njengamehlo omfanekiso).
Nika ingqalelo kwiingcebiso zeendawo ezinokukhanya okuphantsi: Ungasebenzisa i-aperture enkulu ukwandisa isantya se-shutter, kodwa kufuneka unikele ingqalelo kwingxolo ephezulu ye-ISO. Ukuba kuyimfuneko, ungasebenzisa i-tripod okanye unyuse ukukhanya kwe-ambient (njengokusebenzisa isibane sokugcwalisa).
Ukusetyenziswa kwelensi yefisheye enkulu evulekileyo kwindawo enokukhanya okuphantsi
Ngamafutshane, i-aperture enkuluiilensi zeliso lentlanziZinokusombulula ingxaki yokunqongophala kwendawo kwaye zenze iziphumo ezimangalisayo kwimifanekiso yangaphakathi. Zifanelekile ngokukodwa kwimiboniso efuna umbono ogqithisileyo, ukurekhoda okunamandla okanye ukubonakaliswa kobugcisa. Kufuneka kuqatshelwe ukuba ukugqwetheka kunye nokusebenza kufuneka kulinganiswe ngaphambi kokusetyenziswa. Iilensi zeFisheye zifanelekile ngakumbi kwindalo elandela iziphumo ezibonakalayo ezizodwa, kodwa kungekhona ukurekhoda okuyinyani.
Iingcinga Zokugqibela:
UChuangAn wenze uyilo lokuqala kunye nokuveliswa kweelensi ze-fisheye, ezisetyenziswa kakhulu kwiinkalo ezahlukeneyo. Ukuba unomdla okanye uneemfuno zeelensi ze-fisheye, nceda unxibelelane nathi ngokukhawuleza.
Ixesha leposi: Julayi-15-2025
