Ungazikhetha njani iilensi ezilungileyo kwikhamera yakho yokhuseleko?

一,Iindidi zekhamera yekhamera yezokhuseleko:

Iilebhu zekhamera zekhamera zeza ngeendlela ezahlukeneyo, zenzelwe ukuba zilungele iimfuno ezithile zokuhlola. Ukuqonda iindidi zeelensi ezikhoyo kunokukunceda ukhethe ilungelo lokuseta kwakho ikhamera. Nazi ezona ntlobo ziqhelekileyo zeIilebhu zekhamera yezokhuseleko:

1,I-lens ehleliweyo: Ilensi eqingqiweyo inomde ojolise kuyo kunye nendawo yokujonga ibala, engenakutshintshwa. Luhlobo olusebenzayo lwexabiso elifanelekileyo lokubeka iliso kwindawo ethile ngaphandle kwesidingo sohlengahlengiso oluqhubekayo. Iilensi ezimisiweyo ziyafumaneka kubude obujolise kuzo, ukuvumela ukuba ukhethe indawo oyifunayo.

2,I-varifocal lens: I-lens ye-varifocal ibonelela ubude obucacileyo, ukuvumela ukuba utshintshe umhlaba wokujonga ngesandla. Inika ukuguquguquka xa ihlengahlengisa inqanaba lokusondeza kwaye ilungele iimeko apho indawo ehlolweyo inokutshintsha okanye ifuna amanqanaba ahlukeneyo. Iilensi ze-darifocal zisetyenziswa rhoqo kwiimeko apho kufuneka izinto eziguquguqukayo, ezinjengokujonga kwangaphandle.

3,Zoom lens:Ilensi ye-ZOOM ibonelela ngobuchule bokuhlengahlengisa ubude bendawo ekugxilwe kuyo kunye nebala lokujonga kude. Ivumela zombini ukusondeza kunye nokusondeza kwedijithali. Ukusondeza okukhethileyo kugcina umgangatho wemifanekiso ngokuhlengahlengisa izinto zelensi, ngelixa idijithali yedijithali iwandisa umfanekiso ngokwamagama, kukhokelela ekulahlekisweni komgangatho womfanekiso. I-lenses ye-zoom isetyenziswa rhoqo kwizicelo apho iliso kubeka iliso ekude kunye nokukwazi ukufaka iinkcukacha ezilungileyo kubalulekile, njengakwindawo enkulu engaphakathi okanye engaphandle.

4,I-Angle-Angle-Angle: Ilensi ye-angle-Angle inomgangatho onqabileyo, okukhokelela kwimbonakalo ebanzi. Ilungele ukubeka iliso kwiindawo ezinkulu okanye iindawo ezivulekileyo apho ifake imbono enkulu ibalulekile. I-lenses engaphezulu ye-Angle isetyenziswa rhoqo kwi-subsulance meko enjengokupaka iindawo zokupaka, iindawo zokugcina, okanye ukubekwa komlinganiso ongaphandle.

5,I-Telephoto Lens: Ilensi ye-telephoto inobude obugxile kakhulu, ukubonelela ngecandelo lokujonga elincinci lokujonga kunye nokukhuseleka okukhulu. Ilungele ukubeka iliso kwixesha elide okanye iimeko apho kufaka iinkcukacha ezithile kumgama zibalulekile. I-Telephoto Lenses isetyenziswa rhoqo kwizicelo ezinjengeelayisensi yephepha-mvume, ichonga ubuso, okanye ukubeka iliso kumanqaku abalulekileyo kumgama.

6,I-pinhole lens:Ilensi yePinhole yilensi ekhethekileyo eyincinci kakhulu kwaye iyingqondi. Yenzelwe ukuba ifihlwe kwizinto okanye kumphezulu, ukuvumela ukubek 'esweni. Iilensi zepinhole zihlala zisetyenziswa kwiimeko apho ikhamera kufuneka ifihlwe okanye ilumkile, ezinje nge-ATM, okanye i-Poepholes emnyango, okanye i-Poekis emnyango, okanye ihlangezwe.

二,Ungazikhetha njani iilensi ezilungileyo kwikhamera yakho yokhuseleko?

Ukukhetha ezona zinto zintle zekhamera yakho yezokhuseleko linyathelo elibalulekileyo ekuqinisekiseni intsebenzo efanelekileyo kwaye ifake ividiyo ephezulu kakhulu. Nazi ezinye izinto ekufuneka ziqwalaselwe xa ukhetha ilensi:

Uhlobo lwekhamera:Chonga uhlobo lwekhamera yokhuseleko onayo okanye uceba ukuthenga. Iindidi ezahlukeneyo zekhamera, ezinjenge-bullet, idome, okanye i-PTZ (i-pan-th), inokufuna iindidi ezithile zelensi okanye ubungakanani.

Ubude obujolise kuyo: Ubude obujolise kubude bubonisa indawo yokujonga kunye nenqanaba lokusondeza. Ilinganiswa kwiimilimeter (mm). Khetha ubude obujolise kwiimfuno zakho ezithile. Nazi ezinye iindlela eziqhelekileyo:

I-Angle-Angle-Angle.

I-lens esemgangathweni (i-8mm ukuya kwi-12mm): inika imbono elungeleleneyo ifanelekile ukuba isebenze ngokungxamisekileyo.

I-Telephoto Lens (i-12mm nangaphezulu): ibonelela ngendawo yokujonga encinci kodwa inika amandla amakhulu okusondeza ekubekweni kweliso elide okanye ukugxininiswa okucacileyo.

Intsimi yembono (iFov): Cinga indawo ofuna ukuyibeka esweni kunye nenqanaba leenkcukacha ezifunekayo. Intsimi ebanzi yembono iluncedo kwiindawo ezinkulu ezivulekileyo, ngelixa iFondi encinci ilunge ngakumbi kwiindawo ezijolise kuzo ezifuna ukubonwa ngokusondeleyo.

I-aperture: I-aperture ichaza amandla okuqokelela ukukhanya kwe-lens. Imelwe yi-F-inombolo (umz., F / 1.4, F / 2.8). Inombolo esezantsi ye-F-inombolo ibonisa ukungasebenzi kakuhle, kuvumele ukukhanya ngakumbi ukuba bangene kwilensi. I-aperture ebanzi iluncedo kwiimeko ezilula okanye zokufaka imifanekiso ecacileyo ebumnyameni.

Isifo somfanekiso: Qinisekisa ukuba ilensi iyahambelana nesayizi yomfanekiso wekhamera yakho. Imizobo eqhelekileyo yomfanekiso iquka i-1/3, 1/ 2.7 ", kunye ne-1 / 2.5". Sebenzisa iilensi ezenzelwe ubungakanani besinweso esifanelekileyo kunceda ukugcina umgangatho womfanekiso kwaye ukuphepha i-phagnet okanye i-riglorting yomfanekiso.

ILensi MounT: Jonga uhlobo lwentaba ye-lensi efunekayo kwikhamera yakho. Iindidi zentaba eziqhelekileyo ziquka i-cs ntatywe ye-cs ne-C. Qinisekisa ukuba i-lens yakho ukhetha uhambelana nohlobo lwekhamera yekhamera.

I-varifocal vs i-lens ezisigxina:Iilensi ze-varifocal zikuvumela ukuba uhlengahlengise ubude obujolise ngesandla, ukubonelela ngokuguquguquka ukutshintsha indawo yendawo yokujonga njengoko kufuneka. Iilensi ezisisigxina zinobude obumiselweyo kwaye zibonelela ngendawo yokujonga. Khetha uhlobo olufanelekileyo ngokusekwe kwiimfuno zakho zokuhlola.

Uhlahlo-lwabiwo mali:Cinga ngohlahlo-lwabiwo mali lwakho xa ukhetha ilensi. Iilensi ezikumgangatho ophezulu kunye neempawu eziphambili zinokuba zibiza kakhulu kodwa zinokubonelela ngomgangatho womfanekiso ongcono kunye nokuqina.

Umvelisi kunye noPhononongo:Abavelisi abanovelwano abakhuphileyo abonise phambili kwiilensi zekhamera yezokhuseleko. Funda uphononongo lwabathengi kwaye ufune iingcebiso ukuqinisekisa ukuba ukhetha imveliso ethembekileyo neyamkelayo.

三,Ukukhetha ilensi ye-Indoor vs: Nguwuphi umahluko?

Xa ukhetha ilensi yendawo engaphakathi okanye yokuphuma engaphandle, kukho ukungaboni ngasonye okuqaphelayo ngenxa yeempawu ezahlukeneyo zezi meko. Nantsi into ekufuneka uyazi:

Iimeko zokukhanyisa:Iindawo ezingaphandle zihlala zineemeko zokukhanyisa, kubandakanya ukukhanya kwelanga, izithunzi, kunye neemeko ezilula ngexesha ebusuku. Iindawo ezingasebenziyo, kwelinye icala, zihlala zineemeko ezilawulwa ngakumbi ezilawula ukukhanya. Ke ngoko, ukhetho lwelensi kufuneka luthathele ingqalelo imiceli mngeni ethile yendawo nganye.

Ngaphandle:Khetha ilensi kunye ne-aperture ebanzi (inombolo ephantsi) yokuqokelela ukukhanya ngakumbi kwiimeko ezinokukhanya. Oku kuqinisekisa ukubonakala okungcono kunye nomgangatho womfanekiso ngexesha le-dusk, fien, okanye ebusuku. Ukongeza, iilensi ezinobuchule obukhulu obunamandla obunamandla anokuphatha umahluko phakathi kokukhanya kwelanga kunye neendawo ezinemithunzi ngempumelelo.

I-Indoor: Kuba iindawo ezingasebenziyo zihlala zikhanyisekile, iilensi ezinemilinganiselo ephakathi zinokwanela. I-lens enenombolo engaphezulu ye-F incinci isenokuhambisa umgangatho womfanekiso olungileyo kwi-Indoor Asses ngaphandle kwesidingo sobuchule obuninzi.

Indawo yokujonga:Intsimi efunekayo yembono inokwahluka ngokusekwe kubungakanani kunye nobume bendawo yokujonga.

Ngaphandle: Iindawo zangaphandle zifuna indawo ebanzi yembono yokubeka iliso kwizithuba ezikhulu ngokufanelekileyo. I-lenses e-Angle-Angle isetyenziselwa ukufaka umbono obanzi, ngakumbi kwiindawo ezivulekileyo ezinjengeendawo zokupaka iindawo zokupaka okanye zokwakha.

I-Indone: Intsimi yembono yokuphononongwa ngaphakathi ingahluka ngokuxhomekeka kwindawo ethile esweni abekwe esweni. Ngamanye amaxesha, iilensi ezininzi ze-angle zinokulunga ukugubungela igumbi elikhulu okanye indlela yeholo. Nangona kunjalo, kwiindawo ezinobunzima okanye apho iliso elibekekileyo liyimfuneko, ilensi enendawo yokujonga encinci okanye amandla okulungisa ubude bendawo ekugxilwe kuyo (iilensi ze-darifocal) zinokuthandwa.

Ukuxhathisa kwemozulu: Iikhamera zokujonga ngaphandle kufuneka zenzelwe ukumelana neemeko zemozulu ezinzima, ezinjengemvula, ikhephu, uthuli, okanye amaqondo obushushu aphezulu. Kubalulekile ukukhetha iilensi zenzelwe ngokukodwa ukusetyenziswa kwangaphandle, ezihlala ziza neempawu zokunganyangeki zemozulu zifana nokufakelwa okuvaliweyo ukukhusela umswakama kunye nenkunkuma.

Ukungaxhathisi kuka-vindal:Kwindawo yangaphandle, kukho umngcipheko ophezulu wokuphalazwa okanye ukonakalisa. Cinga ngee-lenses kunye neempawu ezikhuselayo ezinje ngefuthe lokunganyangeki okanye ii-domes zokuthintela ukonakala kunye nokuqinisekisa ukusebenza kwekhamera kunye nomgangatho womfanekiso awuzange ulwelwe.

I-IR DisUkuba inkqubo yakho yokuhlola ibandakanya infrared (ir) yokukhanyisela umbono wobusuku, qinisekisa ukuba iilensi ziyahambelana nesibane se-IR. Ezinye iilensi zinokuba necebo lokucoca i-Ir-Sika ukonyusa umgangatho womfanekiso ngexesha lokuvumela ukuba kukhanyiswe i-I-I-I-I-I-I-I-I-I-I-I-I-IR ebusuku.