Ungayikhetha njani eyona Lens yeKhamera yakho yoKhuseleko?

一,Iintlobo zeeLensi zeKhamera yoKhuseleko:

Iilensi zekhamera zokhuseleko ziza kwiindidi ezahlukeneyo, nganye ilungiselelwe ukuhambelana neemfuno ezithile zokucupha.Ukuqonda iindidi zeelensi ezikhoyo kunokukunceda ukhethe eyona ilungileyo kulungiselelo lwakho lwekhamera yokhuseleko.Nazi iintlobo eziqhelekileyo zeiilensi zekhamera yokhuseleko:

1,ILens eZinzisiweyo: I-lens esisigxina inobude obugxilwe obunye kunye nommandla wokujonga, ongenakulungiswa.Kuyindlela ebiza imali efanelekileyo yokubeka iliso kwindawo ethile ngaphandle kwesidingo sohlengahlengiso rhoqo.Iilensi ezilungisiweyo zifumaneka kubude obugqamileyo obahlukeneyo, kukuvumela ukuba ukhethe indawo yokujonga oyifunayo.

2I-Varifocal Lens: I-lens ye-varifocal inikezela ngobude bogxininiso obuhlengahlengiswayo, ikuvumela ukuba utshintshe intsimi yokujonga ngesandla.Ibonelela ngokuguquguquka ekulungiseni inqanaba lokusondeza kwaye ifanelekile kwiimeko apho indawo yokucupha inokutshintsha okanye ifune amanqanaba ahlukeneyo eenkcukacha.Iilensi ze-Varifocal ziqhele ukusetyenziswa kwiimeko apho kufuneka izinto ezahlukeneyo, ezifana nokucupha ngaphandle.

3,Ilensi yokwandisa:I-zoom lens ibonelela ngokukwazi ukunyenyisa ubude bengqwalasela kunye nendawo yokujonga ukude.Ivumela ukusondeza okubonakalayo kunye nokusondeza idijithali.I-Optical zoom igcina umgangatho womfanekiso ngokulungelelanisa ielensi zelensi, ngelixa i-digital zoom ikhulisa umfanekiso ngokwedijithali, okukhokelela ekulahlekeni okunokubakho komgangatho womfanekiso.Iilensi zokusondeza ziqhele ukusetyenziswa kwizicelo apho ukubekwa esweni okude kunye nokukwazi ukuthatha iinkcukacha ezintle kubalulekile, njengendawo enkulu yangaphakathi okanye yangaphandle.

4,I-Wide-Angle Lens: I-lens ebanzi-engile inobude obugxininise obufutshane, okukhokelela kumhlaba obanzi wokujonga.Kufanelekile ukubeka iliso kwiindawo ezinkulu okanye iindawo ezivulekileyo apho ukubamba imbono ebanzi kubalulekile.Iilensi ezibanzi ziqhele ukusetyenziswa kwiimeko zokucupha ezifana neendawo zokupaka iimoto, iindawo zokugcina iimpahla, okanye ukujongwa kweperimeter yangaphandle.

5Telephoto Lens: Ilensi ye-telephoto inobude obugxininise obude, ibonelela ngommandla omncinci wokujonga kunye nokwandiswa okukhulu.Ilungele ukubeka iliso kuluhlu olude okanye iimeko apho ukuthatha iinkcukacha ezithile kumgama kubalulekile.Iilensi zeTelephoto ziqhele ukusetyenziswa kwizicelo ezinje ngokuqaphela ipleyiti yelayisenisi, ukuchongwa kobuso, okanye ukujonga iindawo ezibalulekileyo kumgama.

6I-Pinhole Lens:I-pinhole lens yilensi ekhethekileyo encinci kakhulu kwaye iyingqondi.Yenzelwe ukufihlwa phakathi kwezinto okanye imiphezulu, ivumela uphononongo olufihlakeleyo.Iilensi ze-Pinhole zisetyenziswa ngokuqhelekileyo kwiimeko apho ikhamera idinga ukufihlwa okanye ingqiqo, njengakwi-ATM, iminyango yokukrola, okanye imisebenzi yokucupha.

二,Ungayikhetha njani eyona Lens yeKhamera yakho yoKhuseleko?

Ukukhetha eyona lens ilungileyo yekhamera yakho yokhuseleko linyathelo elibalulekileyo ekuqinisekiseni ukusebenza kakuhle kunye nokuthatha ividiyo ekumgangatho ophezulu.Nantsi eminye imiba ekufuneka uyiqwalasele xa ukhetha ilensi:

Uhlobo lwekhamera:Qinisekisa uhlobo lwekhamera yokhuseleko onayo okanye uceba ukuyithenga.Iindidi ezahlukeneyo zekhamera, ezifana nebhulethi, idome, okanye i-PTZ (i-pan-tilt-zoom), inokufuna iindidi okanye iisayizi ezithile zeelensi.

Ubude bokuJonga: Ubude bojoliso bumisela indawo yokujonga kunye nenqanaba lokusondeza.Ilinganiswa ngeemilimitha (mm).Khetha ubude bogxininiso oluhambelana neemfuno zakho ezithile.Nazi ezinye iinketho eziqhelekileyo:

I-Wide-Angle Lens(2.8mm ukuya kwi-8mm): Ibonelela ngommandla obanzi wokujonga, olungele ukugquma iindawo ezinkulu okanye ukubeka esweni izithuba ezibanzi.

Ilensi eqhelekileyo (8mm ukuya kwi-12mm): Inika umbono olungeleleneyo olungele izicelo zokucupha ngokubanzi.

ILens yeTelephoto (12mm nangaphezulu): Ibonelela ngebala elimxinwa lokujonga kodwa inikezela ngesakhono sokusondeza esikhulu kuluhlu olude lokujonga okanye ukuvala okuneenkcukacha.

Indawo yokuJonga (FOV): Qwalasela indawo ofuna ukuyijonga kunye nenqanaba leenkcukacha ezifunekayo.Indawo ebanzi yokujonga iluncedo kwiindawo ezinkulu ezivulekileyo, ngelixa i-FOV emxinwa ingcono kwiindawo ezithile ekujoliswe kuzo ezifuna uqwalaselo olusondeleyo.

Umngxuma wokuvula: Imbobo imisela isakhono selensi yokuqokelela ukukhanya.Imelwe ngu-f-inani (umz., f/1.4, f/2.8).I-f-number esezantsi ibonisa indawo ebanzi, evumela ukukhanya okungakumbi ukuba kungene kwilensi.Ukuvula okubanzi kunenzuzo kwiimeko zokukhanya okuphantsi okanye ukuthabatha imifanekiso ecacileyo ebumnyameni.

Ukuhambelana koMfanekiso woMfanekiso: Qinisekisa ukuba ilensi iyahambelana nobungakanani boluvo lwekhamera yakho.Ubungakanani boluvo oluqhelekileyo lomfanekiso lubandakanya i-1/3 ″, 1/2.7 ″, kunye ne-1/2.5″.Ukusebenzisa i-lens eyenzelwe ubungakanani obuchanekileyo boluvo kunceda ukugcina umgangatho womfanekiso kwaye unqande i-vignetting okanye ukuguqulwa komfanekiso.

Lens Mount: Jonga uhlobo lokunyuswa kwelensi olufunekayo kwikhamera yakho.Iindidi zokunyuka eziqhelekileyo ziquka i-CS mount kunye ne-C yokunyuka.Qinisekisa ukuba ilensi oyikhethayo ihambelana nodidi lwekhamera.

I-Varifocal vs. Ilensi eZinzisiweyo:Iilensi ze-Varifocal zikuvumela ukuba ulungelelanise ubude bogxininiso ngesandla, ukubonelela ngokuguquguqukayo ukutshintsha indawo yokujonga njengoko kufuneka.Iilensi ezizinzileyo zinobude obumiselwe kwangaphambili kwaye zinika indawo esisigxina yokujonga.Khetha uhlobo olufanelekileyo ngokusekelwe kwiimfuno zakho zokucupha.

Uhlahlo lwabiwo-mali:Qwalasela uhlahlo lwabiwo-mali lwakho xa ukhetha ilensi.Iilensi ezikumgangatho ophezulu ezineempawu eziphambili zinokubiza kakhulu kodwa zinokubonelela ngomgangatho ongcono womfanekiso kunye nokuqina.

Umenzi kunye noPhononongo:Phanda ngabavelisi abahloniphekileyo abaziingcali kwiilensi zekhamera yokhuseleko.Funda uphononongo lwabathengi kwaye ufune iingcebiso zokuqinisekisa ukuba ukhetha imveliso ethembekileyo nethembekileyo.

三,Ukukhetha iLens yeIndoor vs. Ngaphandle: Uthini Umahluko?

Xa ukhetha ilensi yokucupha ngaphakathi okanye ngaphandle, kukho iiyantlukwano ezimbalwa ezibalulekileyo ekufuneka uziqwalasele ngenxa yeempawu ezicacileyo zezi meko.Nantsi into ekufuneka uyazi:

Iimeko zokukhanyisa:Iindawo ezingaphandle zihlala zineemeko zokukhanya ezahlukeneyo, kubandakanya ukukhanya kwelanga, izithunzi, kunye neemeko zokukhanya okuphantsi ngexesha lasebusuku.Iimeko zangaphakathi, kwelinye icala, zineemeko zokukhanyisa ezilawulwa ngakumbi ngokhanyiso olungaguqukiyo.Ngoko ke, ukhetho lwe-lens kufuneka luthathele ingqalelo imingeni ethile yokukhanyisa kwindawo nganye.

Ngaphandle:Khetha i-lens ene-aperture ebanzi (i-f-number ephantsi) ukuqokelela ukukhanya okungakumbi kwiimeko zokukhanya okuphantsi.Oku kuqinisekisa ukubonakala okungcono kunye nomgangatho womfanekiso ngexesha lokuhlwa, ukusa, okanye ebusuku.Ukongeza, iilensi ezinoluhlu oluguquguqukayo olunamandla zinokuwubamba umahluko phakathi kokukhanya kwelanga okuqaqambileyo kunye neendawo ezinomthunzi ngokufanelekileyo.

Ngaphakathi: Kuba iimeko zangaphakathi zihlala zinezibane ezifanayo, iilensi ezinemingxuma ephakathi zinokwanela.Ilensi enenombolo ka-f engaphezulu kancinci isenakho ukuhambisa umgangatho womfanekiso olungileyo kwiisetingi zangaphakathi ngaphandle kwesidingo sokuvula okubanzi.

Indawo yokuJonga:Indawo efunekayo yokujonga inokwahluka ngokusekelwe kubukhulu kunye noyilo lwendawo yokucupha.

Ngaphandle: Iindawo zangaphandle zifuna indawo ebanzi yokujonga ukujonga iindawo ezinkulu ngokufanelekileyo.Iilensi ezibanzi ziqhele ukusetyenziswa ukubamba imbono ebanzi, ngakumbi kwiindawo ezivulekileyo njengeendawo zokupaka iimoto okanye izakhiwo zangaphandle.

Ngaphakathi: Indawo yokujonga iliso yangaphakathi inokwahluka ngokuxhomekeke kwindawo ethile ebekwe iliso.Kwezinye iimeko, i-lens ene-angle ebanzi inokufaneleka ukugubungela igumbi elikhulu okanye i-paseji.Nangona kunjalo, kwiindawo ezixineneyo okanye apho uhlolo olucacileyo luyimfuneko, i-lens enendawo encinci yokujonga okanye ukukwazi ukuhlengahlengisa ubude be-focal (i-varifocal lens) inokukhethwa.

Ukumelana neMozulu: Iikhamera kunye neelensi zokujonga ngaphandle kufuneka ziyilelwe ukumelana neemeko zemozulu ezimaxongo, njengemvula, ikhephu, uthuli, okanye amaqondo obushushu agqithisileyo.Kubalulekile ukukhetha iilensi ezilungiselelwe ngokukodwa ukusetyenziswa ngaphandle, ezihlala zisiza kunye neempawu zokumelana nemozulu efana neendawo ezivaliweyo zokukhusela ukufuma kunye nobutyobo.

Ukumelana neVandali:Kwiindawo ezingaphandle, kukho umngcipheko ophezulu wokonakalisa okanye ukuphazamisa.Qwalasela iilensi ezineempawu zokhuselo ezifana neecasings ezikwaziyo ukumelana nempembelelo okanye iidomes ukunqanda umonakalo kunye nokuqinisekisa ukuba ukusebenza kwekhamera kunye nomgangatho womfanekiso awuchaphazeleki.

Ukuhambelana kwe-IR:Ukuba inkqubo yakho yokucupha ibandakanya ukukhanya kwe-infrared (IR) yokubona ebusuku, qinisekisa ukuba ilensi iyahambelana nokukhanya kwe-IR.Ezinye iilensi zinokuba nesihluzo esisikiwe se-IR sokuphucula umgangatho womfanekiso ngexesha lasemini ngelixa sivumela ukukhanya okusebenzayo kwe-IR ebusuku.