Hauv tshuab lub zeem muag, uas yog cov khoom siv tseem ceeb, raws li cov khoom siv tseem ceeb, feem ntau yuav tsum tau siv ua ke nrog cov koob yees duab nrog muaj cov koob yees duab. Muaj Lens, belongs rau ib hom kev kho qhov muag. Kev kho qhov muag yog qhov system uas muaj ntau lo ntsiab muag kho kho qhov muag xws li lo ntsiab muag, tsom iav, proms, prisms thiab diaphragms ua ke hauv ib qho kev txiav txim. Yog li cov ntsiab lus nkawv muaj dab tsi?
I. MODELORTIORIZIED AS MATTORY LIS INTERFACT
1. {{{{1} mount thiab cs - mount
C inface yog lub zeem muag tshuab tam sim no tau siv nyob rau hauv ib qho ntawm lub lens interface, nws xov interface: diamation=1, cov hniav. Nws muaj qhov zoo ntawm lub teeb yuag, cov ntim me me, thiab kev lag luam ntau haiv neeg.
CS interface ntxiv ntxiv lub nplhaib adapter tuaj yeem hloov pauv mus rau hauv C infaceface deb yog 12.5mm. 5 mm qhov sib txawv ntawm lawv.
2. M12, M42, M58, M95 chaw nres nkoj M95
Tus lej tom qab m sawv cev txoj kab uas hla ntawm lub interface, M12 txoj kab uas hla yog 48mm, m95 inch yog 95 hli.
Cov saum toj m thiab C / CS chaw nres nkoj yog txhua lub chaw nres nkoj xov.
3.F chaw nres nkoj thiab EF chaw nres nkoj
Fort thiab EF chaw nres nkoj belongs rau lub Snap interface, f chaw nres nkoj ntawm ntau lub tswv yim muaj cov koob yees duab loj dua 1 nti thaum koj yuav tsum tau siv Fort ntawm lub lens.
4.V chaw nres nkoj
V interface Lens yog qhov zoo -}}}}}}} Kev siv cov koob yees duab, feem ntau tseem siv rau cov koob yees duab muaj lub hom phiaj lub hom phiaj.
5. Lwm yam cuam tshuam
T2 interface, LEAA interface tseem siv nyob rau hauv lub lens interface.
Ii. Muaj cov lo ntsiab muag tau raws li cov ntsiab lus ntev
1. Tsau Focal Ntev Lens:Tsau focal ntev, feem ntau kho tau aperture, nrog tsom npliag {{tuning, tsuas yog ua haujlwm me me, ntawm kev pom nrog qhov kev hloov deb.
Raws li qhov ntev ntawm lub focal ntev, tsau focal focal ntev lens tuaj yeem muab faib ua plaub lens ntev, cov qauv lens, telchto lens. Nws yuav tsum raug sau tseg tias qhov ntev ntawm lub focal ntev ntawm lub hom phiaj tseem ceeb yog qhov loj ntawm lub hom phiaj tseem ceeb ntawm tus qauv lens kuj txawv.
2. Zoom muaj lens:Lub focal ntev tuaj yeem hloov pauv tsis tu ncua, qhov loj me dua li lub focal focal focal ntev, lub pixel zoo tsis zoo li lub focal focal ntev lens.
Zoom lens ntawm lub rooj zaum zoom, kho lub nplhaib tuaj yeem ua rau lub focal ntev ntawm lub lens tus nqi hauv kev hloov pauv hloov tau. Qhov sib piv ntawm focal ntev tshaj plaws tus nqi thiab luv tshaj plaws focal ntev tus nqi yog hu ua lub zoom magnification ntawm lub lens. Zoom lens tuaj yeem muab faib ua kev txhais lus zoom thiab hluav taws xob zoom ob pawg.
Zoom lens tuaj yeem hloov pauv tsis tu ncua vim muaj cov cim ntev ntawm kev pom yog qhov yooj yim heev rau kev siv, yog li hauv kev yees duab ntawm kev yees duab yog ntau dav siv. Txawm li cas los xij, vim muaj pes tsawg lo ntsiab muag ntawm lub lens zoom, yog li cov qauv ntawm kev kho kom zoo, yog li nws cov duab zoo tshaj plaws ua tsis tau, yog li nws cov duab zoo tsis tuaj yeem piv nrog tib qib ntawm cov Tsau - focal - ntev lens.
III. Cov Hom Phiaj Tshwj Xeeb Lenses
- Tsom iav lub taub hau (micro), feem ntau yog hais txog cov kev yees duab ntau dua 10: 1 shooting siv, tab sis vim cov kev yees duab tam sim no ntau dua 2: 1 yuav raug siv thaum lub taub hau tsom iav.
- macro lens (macro), feem ntau yog hais txog qhov kev xav piv ntawm 2: 1 ~ 1: 4 ntau ntawm cov ntsiab nta tshwj xeeb. Nyob rau hauv cov ntaub ntawv ntawm cov duab zoo yuav tsum tsis yog siab heev, feem ntau tuaj yeem siv nruab nrab ntawm lub lens thiab pem hauv ntej lub lens nrog lub ntsej muag sib thooj ntawm cov nyhuv ntawm kev ua kom pom tseeb.
-} lens felecentric lens (telecentric), feem ntau yog rau kev kho ntawm parallax ntawm cov iav lo ntsiab muag, nws tuaj yeem yog cov kev hloov pauv ntawm cov khoom uas muaj kev sib tw ntawm cov khoom ntsuas ntsuas yog qhov kev thov tseem ceeb heev.
{{0-} ultraviolet lens (ultraviolet) thiab lub lens infravered (infrared), lub lens dav dav yog tsim rau kev siv lub teeb pom kev zoo ntawm lub teeb sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv, ua rau muaj kev sib tw chromatic. Feem ntau siv LENT AchRomatic tsim tseem yog rau pom lub teeb pom kev zoo, cov lens ntawm cov lens tshwj xeeb uas tau tsim rau CLAVIOLET thiab INFRARED LENS.
Telecentric lo ntsiab muag tau muab faib ua:
(1) khoom -}} sab telecentric
Nyob rau hauv ib qho qhov tob ntawm teb thaj chaw, txawm hais tias tus kwv qhov kev hloov deb, qhov loj ntawm cov khoom xav tau yuav tsis hloov. Hom no yog feem ntau siv nyob rau hauv teb ntawm kev soj ntsuam kev soj ntsuam.
2) duab -} Square Telecentric
Txawm hais tias qhov kev ncua deb ntawm cov photoreceptor nti thiab lub lens hloov, qhov loj ntawm cov khoom ntawm cov khoom tsis hloov, tab sis cov khoom deb cuam tshuam rau qhov loj ntawm daim duab. Hom no hauv teb kev lag luam kev soj ntsuam yuav luag tsis ua haujlwm, tsis txhob rov ua dua.
3) ob leeg telecenter
Cov khoom thiab nyiam nyob ze thiab nyob deb yuav tsis cuam tshuam rau qhov kev ntsuas, feem ntau siv nyob rau hauv lub tshuab ntawm tshuab kuaj pom, qhov tsis zoo yog tias tus nqi siab dua.
Cov yam ntxwv thiab kev thov cov ntsiab ntawm cov ntsiab muag hauv xov tooj
Cov yam ntxwv:
(1) Tsis muaj lub voos sab xis, tshem tawm pom, kom pom tseeb tas li
2) Qis distortion
3) Tsuas yog lub teeb sib txuas tau tuaj yeem ua tau
Daim Ntawv Thov Qhia:
(1) Thaum lub tuab ntawm cov khoom uas yuav raug kuaj pom yog qhov loj me me, yuav tsum tau kuaj ntau dua li ib lub dav hlau, cov ntawv ntim khoom noj xws li cov thawv khoom noj, cov raj mis haus thiab lwm yam.
(2) Thaum qhov chaw tso rau ntawm cov khoom ntsuas kom raug ntsuas yog tsis paub meej, yuav nrog lub lens ntawm lub kaum sab xis.
(3) Thaum tus kwv nyob rau hauv kev sim dhia thiab nqis thaum lub sijhawm kuaj pom, xws li kab kab ntau lawm los ua rau kom muaj kev hloov pauv ntawm kev ua haujlwm.
(4) Thaum cov khoom ntsuas kom ntsuas nrog aperture, lossis peb -} qhov chaw nyob.
(5) Thaum qhov kev xav tau rau qhov qis distortion tus nqi, qhov ci ci ntawm cov duab duab yog yuav luag zoo tib yam.
(6) thaum tsis xws luag kom muaj ntes tau tsuas yog kuaj pom nyob hauv ib qho kev ua kom pom tseeb hauv tib qho kev coj.
(7) Thaum nws yuav tsum tau ua kom pom qhov tseeb, xws li kev ua txhaum cai ntawm 1um.