Ungayikhetha njani ilensi efanelekileyo kwiikhamera zeshishini?

Iikhamera zeshishini zizinto eziphambili kwiinkqubo zombono zomatshini. Umsebenzi wabo obalulekileyo kukuguqula imiqondiso ye-ofisi yombane

Iinkqubo zombono zomatshini, iileyi zekhamera yeshishini zilingana neliso lomntu, kwaye umsebenzi wayo ophambili kukugxila umfanekiso ochanekileyo kwifoto yomthombo womenzi womfanekiso (ikhamera yezamashishini).

Lonke ulwazi lomfanekiso osetyenzisiweyo yinkqubo yokubonakalayo inokufunyanwa kwilensi yekhamera yemveliso. Umgangatho weI-lens yekhamera yezamashishiniiya kuyichaphazela ngokuthe ngqo intsebenzo iyonke yenkqubo yokubonakalayo.

Njengohlobo lwezixhobo zokucinga, iilebhu zekhamera yezamashishini zihlala zenza inkqubo yokufumana umfanekiso ngokuhambisa amandla, ikhamera, njl njl. Ngokubanzi, inokuhlaziywa kwaye ithathelwe ingqalelo kwezi zinto zilandelayo:

1.I-waveleler kunye ne-zoom lens okanye hayi

Kulula ukuqinisekisa ukuba i-lens ye-lens yeshishini ifuna ilensi ye-zoom okanye ilensi ekugxilwe kuyo. Okokuqala, kuyimfuneko ukufumanisa ukuba ngaba i-waveedty ye-lens yekhamera igxile. Ngexesha lenkqubo yokucinga, ukuba iimfuno zokukhuseleka kufuneka zitshintshwe, ilensi yesondeza kufuneka isetyenziswe, kungenjalo iilensi ekugxilwe kuzo zanele.

Ngokuphathelele i-wavelength yeI-lensed yekhamera yezamashishini, Iqela elibonakalayo lokukhanya lelona lixhaphake kakhulu, kwaye kukwakhona izicelo kwezinye iibhendi. Ngaba amanyathelo ongezelelweyo angenayo afunekayo? Ngaba kukukhanya kwe-monolomatic okanye i-polychromatic? Ngaba ifuthe lokukhanya okulahlekileyo kunokuphepha ngempumelelo? Kuyimfuneko ukuba ugqibezele ngokungxamisekileyo le micimbi ingentla ngaphambi kokuchonga i-lavement yelensi.

Khetha iilebhu zekhamera yezamashishini

2.Eyona nto iphambili inikwa izicelo ezizodwa

Kuxhomekeka kwisicelo sokwenyani, kusenokuba kusekho iimfuneko ezikhethekileyo. Iimfuneko ezikhethekileyo kufuneka ziqinisekiswe kuqala, umzekelo, nokuba kukho umsebenzi wokulinganisa, ukuba ilensi yeTelection iyafuneka, nokuba i-Teectionric le mifanekiso inkulu kakhulu, njl. yithathele ingqalelo.

3.Umgama wokusebenza kunye nobude obugxile

Umgama wokusebenza kunye nobude obugxile kakhulu zihlala ziqwalaselwa kunye. Umbono kawonke-wonke kukuqala ukumisela isisombululo senkqubo, ke uqonde ubungakanani bokudityaniswa nobukhulu be-CCD pixel, kwaye emva koko uqonde umgama we-CCD ye-CCD, kwaye ke uqonde umgama womfanekiso we-CCD, ukuze uqaphele ubude bendawo yokugxila kwi I-lens yekhamera yezamashishini.

Ke ngoko, ubude obucacileyo belensi yekhamera ye-mveliso inxulumene nomgama wokusebenza kwelensi yekhamera kunye nesisombululo sekhamera (kunye nobukhulu be-pixel ye-CCD).

Izinto ekufuneka ziqwalaselwe xa ukhetha i-lensed yekhamera yezamashishini

4.Ubungakanani bomfanekiso kunye nomgangatho womfanekiso

Ubungakanani bomfanekiso weI-lens yekhamera yezamashishiniUkhethwa ukuba kungahambelani nobungakanani bomphezulu wekhamera yemveliso, kunye nomgaqo "wokuhlalwa", oko kukuthi, umphezulu wekhamera awunakudlula kwilensi, kungenjalo Umgangatho womfanekiso wecandelo lomphetho alinakuqinisekiswa.

Iimfuneko zokwenza ingcinga ikakhulu zixhomekeke kwi-MTF kunye nokugqwetha. Kwimilinganiselo yokulinganisa, ukugqwetha kufuneka kunikwe ingqalelo ephezulu.

5.I-Aperture kunye ne-lens intaba

I-aperture yeilensi zekhamera yezamashishini ikakhulu ichaphazela ukuqaqamba komhlaba, kodwa kumbono wangoku, ukukhanya komfanekiso wokugqibela kugqitywa kwizinto ezininzi ezinje nge-aperture, amasuntswana eekhamera, umthombo wokukhanya, ukuze Fumana ukukhanya komfanekiso okufunekayo, amanyathelo amaninzi ohlengahlengiso olufunekayo.

I-lens intaba yekhamera yeshishini ibhekisa kwi-Intergeelayo phakathi kweelensi kunye nekhamera, kwaye bobabini kufuneka bahambelane. Nje ukuba ababini abahambelani, ukutshintshwa kufuneka kuthathelwe ingqalelo.

Izinto ekufuneka ziqwalaselwe xa ukhetha iilebhu zekhamera yezamashishini

6.Ixabiso kunye netekhnoloji

Ukuba emva kokuqwalaselwa ngokubanzi kwezi zinto zingasentla, kukho izisombululo ezininzi ezihlangabezana neemfuno, unokujonga iindleko ezibanzi kunye nokukhula kwezobugcisa, kwaye uzinikele kuqala.

I-PS: Umzekelo we-Lens

Apha ngezantsi sinika umzekelo wendlela yokukhetha ilensi yekhamera yeshishini. Umzekelo, inkqubo yombono womatshini wokuchonga ingqekembe kufuneka ixhotywe ngeI-lens yekhamera yezamashishini. Izithintelo ezaziwayo zezi: I-CCD ye-Innery yi-2/3 i-intshi, ubungakanani be-pixel ngu-4.65s, umgama we-C-Mode, isisombululo senkqubo yi-0.02mm, kunye nomthombo wokukhanya yi-LED Umthombo wokukhanya.

Uhlalutyo olusisiseko lokukhetha iilensi zezi zilandelayo:

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(3) Umgama wokusebenza kunye nobude obugxile:

Ukuqiniswa komfanekiso: M = 4.65 / (0.05 x 1000) = 0.093

Ubude obujolise kuyo: F = l * m / (m + 1) = 200 * 0.093 / 1.093 = 17mm

Ukuba umgama onenjongo kufuneka ungaphezulu kwe-200mm, ubude obujolise kwiilensi ezikhethiweyo kufuneka zibe mkhulu kune-17mm.

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(5) Intaba ye-lensi kufuneka ihlawulwe i-C Akukho mfuneko yokuba i-aperture ngalo mzuzu.

Ngohlalutyo nokulwa kwezi zinto zilapha ngasentla, sinokufumana i-chaliline yokuqala ye-lenses ye-lekharam ye-5mm, ekugxilwe kuyo, ukugxila kwesigqibo, i-C-intaba, i-intshi ye-CCD Ubungakanani be-pixel, kunye nokugqwetha komfanekiso omncinci. Ngokusekwe kwezi mfuno, ukukhetha ngakumbi kunokwenziwa. Ukuba iilensi ezininzi zinokuhlangabezana nezi mfuno, kuyacetyiswa ukuba kuqinisekiwe ngakumbi kwaye ukhethe ezonans ezilungileyo.

Iingcinga zokugqibela:

I-Chuangan iqhube uyilo lwangaphambili kunye nemveliso yeIilensi zemizi-mveliso, esetyenziswa kuwo onke amabakala kwizicelo zeshishini. Ukuba unomdla okanye unezidingo zeelensi zemizi-mveliso, nceda unxibelelane nathi ngokukhawuleza.