Ungayikhetha njani ilensi ebanzi echanekileyo xa uthwebula isibhakabhaka esineenkwenkwezi?

Iilensi zekona ebanziInika umbono obanzi, okuvumela ukuba ubambe isibhakabhaka sasebusuku esikhulu ngakumbi kunye neenkcukacha ezintsonkothileyo zeMilky Way xa uthatha imifanekiso yeenkwenkwezi. Ngoko ke, ungayikhetha njani ilensi ebanzi efanelekileyo xa uthatha imifanekiso yesibhakabhaka esineenkwenkwezi?

Ukukhetha ilensi ebanzi efanelekileyo kufuna ukuqwalaselwa kwezinto ezininzi. Makhe sijonge izinto eziphambili ezinefuthe:

1.Ukukhetha ubude befocal

Ubude obuphambili obuyi-14-24mm bubona bude buphambili obuphambili kwiilensi ezibanzi zokudubula isibhakabhaka esineenkwenkwezi. Bungathatha yonke iMilky Way ngelixa buqinisekisa ukuba umgangatho womfanekiso emaphethelweni ucacile, nto leyo eyenza ukuba ifaneleke ukufota imibono ebanzi yeMilky Way kunye nemiboniso edibanisa amasimi eenkwenkwezi kunye neendawo ezibukekayo.

Umzekelo, ukusebenzisa ubude be-focal obuyi-14mm kukuvumela ukuba ufote isibhakabhaka esikhulu kwaye ubambe umbono opheleleyo weMilky Way, ngelixa ukusebenzisa ubude be-focal obuyi-24mm kukuvumela ukuba ufote okungakumbi kwendawo.

2.Ukukhetha i-Aperture

Xa uthatha isibhakabhaka esineenkwenkwezi, kungcono ukhethe ilensi ebanzi ene-aperture enkulu kangangoko, njengoko i-aperture enkulu inenzuzo enkulu kwiindawo ezinokukhanya okuphantsi. I-aperture ebanzi iqinisekisa ukungena kokukhanya okwaneleyo, ithintela ngempumelelo iindlela zeenkwenkwezi ngelixa ngaxeshanye ivumela ukuseta kwe-ISO ephantsi—ngaloo ndlela kunciphisa ingxolo kwaye kuvelise imifanekiso ngokucacileyo nangokucocekileyo.

Xa uthatha isibhakabhaka esineenkwenkwezi, kuyacetyiswa ukuba ukhethe i-aperture ephezulu ye-F2.8 okanye ngaphezulu. I-F2.8 yindlela efanelekileyo kwiindawo ezininzi, ngelixa i-F1.4-1.8 yeyona ilungileyo kwaye ifanelekile kwiindawo ezinokukhanya okuphantsi.

Xa uthatha isibhakabhaka esineenkwenkwezi ngelensi ebanzi, kufuneka kuqwalaselwe ukuba kukho umngxuma ongakanani.

3.Ulawulo lomgangatho womfanekiso

Iilensi zekona ebanziZithambekele ekutshintsheni kwe-chromatic kunye neengxaki zokuphambuka kwebhareli; ilensi egqwesileyo kufuneka ikwazi ukulawula ukuphambuka kwe-chromatic kunye nokuphambuka kakuhle. Xa ujonga isibhakabhaka esineenkwenkwezi, ukuba ilensi ayilawuli ukuphambuka kwe-chromatic kakuhle, imiphetho emfusa inokuvela ijikeleze iinkwenkwezi, ngelixa ukuphambuka kuya kubangela ukuba umfanekiso uphambukiswe, nto leyo echaphazela isiphumo siphela.

Kungoko ke, kubalulekile ukukhetha ilensi ebonisa ulawulo oluphezulu kokungahambelani kwe-chromatic kunye nokuphambuka. Ukongeza, kubalulekile ukukhetha ilensi enesisombululo esiphezulu ukuqinisekisa ukuba iinkwenkwezi zibonakala ngathi zicacile kwaye zibukhali, kuthintelwe ukufiphala.

4.Ukugxila ngqo ngesandla

Kwiindawo ezimnyama, umsebenzi wekhamera we-autofocus uhlala ungasebenzi, nto leyo ebangela ukuba kuhlengahlengiswe ukugxila ngesandla—ngokukodwa, ukuseta iringi yokugxila kuphawu lwe-infinity (∞). Nangona kunjalo, kubalulekile ukuqaphela ukuba uphawu lwe-infinity kwisikali somgama welensi ludla ngokubonisa ukungachaneki okuncinci ekusebenzeni kwaye alunakuthenjwa kuphela.

Kungoko ke, kubalulekile ukukhetha ilensi enokuthintela ukugqwala kwendandatho okuphakathi kunye nohambo olude ukuze kube lula ukulungisa ukugqwala ngokuchanekileyo kunye nokuqinisekisa ukuba iinkwenkwezi zicacile kwaye zibukhali.

Ukudubula isibhakabhaka esineenkwenkwezi ngelensi ebanzi kudla ngokufuna ukugxila ngesandla

5.Ubunzima kunye nomthamo

Ukuba ufuna ukuthwalailensiNgaphandle ixesha elide, kufuneka uqwalasele ubunzima kunye nobukhulu belensi. Umzekelo, xa uphethe izixhobo zokwenza imisebenzi yangaphandle efuna ixesha elide, njengokunyuka intaba okanye ukunyuka intaba, kubalulekile ukukhetha ilensi enoyilo olukhaphukhaphu ukuze ukwazi ukuhamba lula kwaye unciphise umthwalo wakho.

Ngaphezu koko, kuyimfuneko ukukhetha ilensi efanelekileyo ngokwebhajethi yakho. Ukuba unebhajethi eninzi, ungakhetha ilensi ekumgangatho ophezulu; nangona kunjalo, ukuba uhlahlo lwabiwo-mali lwakho lulinganiselwe, kuyacetyiswa ukuba ukhethe ilensi ehlangabezana neemfuno zakho ezisisiseko zokudubula.

Iingcinga Zokugqibela:

Ukuba unomdla wokuthenga iintlobo ngeentlobo zeelensi zokujonga, ukuskena, iidrone, ikhaya elikrelekrele, okanye naluphi na olunye uhlobo lokusetyenziswa, sinazo izinto ozifunayo. Nxibelelana nathi namhlanje ukuze ufunde okungakumbi ngeelensi zethu kunye nezinye izixhobo.