Fisheye Lo Ntsiab Muag (18 Duab): Dab Tsi Yog Fisheye Rau, Nws Yog Dab Tsi Thiab Nws Tsim Nyog Li Cas Rau Lub Koob Yees Duab?

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2023-12-16 05:41

Cov cuab yeej siv yees duab tau muab rau hauv ntau yam kev hloov kho, thiab qhov muaj qhov zoo ntawm lub lens ncaj qha cuam tshuam rau qhov tshwm sim ntawm kev tua. Ua tsaug rau optics, koj tuaj yeem tau txais cov duab meej thiab ci. Fisheye lo ntsiab muag feem ntau siv los ntawm kws yees duab tshaj lij thiab tuaj yeem siv los ntes cov duab tshwj xeeb . Muaj ntau ntau yam ntawm cov kev kho qhov muag, cov yam ntxwv ntawm kev sib txawv me ntsis. Txhawm rau xaiv lub lens zoo li qhov no, koj yuav tsum paub koj tus kheej nrog nws cov yam ntxwv ua ntej.

Nws yog dab tsi thiab nws yog dab tsi rau?

Lub lens fisheye yog lub lens pov luv uas muaj qhov txawv txav ntawm ntuj … Hauv daim duab, cov kab ncaj tau hloov pauv ntau heev, uas yog qhov sib txawv tseem ceeb ntawm cov khoom no. Txhawm rau kom pom lub kaum ntse ntse, cov tuam txhab tsim khoom tuaj yeem teeb tsa peb qhov tsis zoo menisci. Cov phiaj xwm no tau siv hauv cov koob yees duab ntawm cov tuam txhab sib txawv: ob qho tib si hauv tsev thiab txawv teb chaws.

Cov ntaub ntawv ntau ntxiv tuaj yeem tso rau ntawm cov qauv dav-dav, uas yog qhov tsis muaj tseeb nyob rau hauv rooj plaub ntawm cov qauv kev siv qhov muag. Tib yam Fisheye yog qhov tsim nyog rau kev tua hauv qhov chaw me me los tsim kev txhaj tshuaj dav . Qhov no tso cai rau koj thawb qhov txwv ntawm tus kws yees duab thiab ua kom pom kev zoo nkauj txawm tias nyob ze ze.

Cov cuab yeej no feem ntau siv hauv kev yees duab, tso cai rau tus kws yees duab los qhia tswv yim.

Nrog cov ntses-qhov muag pom, koj tuaj yeem ua tus duab qub yog tias koj teeb tsa cov cuab yeej raug . Txawm li cas los xij, vim kev siv cov kev pom zoo li no, lub zeem muag tau hloov pauv heev. Vignetting yuav tshwm sim hauv qee cov duab, teeb pom kev zoo yuav hloov pauv. Qhov no feem ntau tshwm sim rau cov laj thawj kev ua haujlwm, tab sis cov kws yees duab tshaj lij tuaj yeem siv cov txheej txheem no rau cov txiaj ntsig zoo nkauj. Qhov tsis zoo yog qhov loj ntawm txoj kab uas hla ntawm lub kho qhov muag, uas ua rau qee qhov tsis yooj yim.

Fisheye qhov tob ntawm daim teb loj, yog li txhua qhov kev kawm hauv kev txhaj tshuaj yuav yog tsom, uas txhais tau tias koj tuaj yeem tsim qhov kev txhaj tshuaj nrog qhov tshwm sim txaus nyiam. Qhov no yuav tsum raug coj mus rau hauv tus account yog tias cov khoom nyob rau hauv pem hauv ntej yuav tsum tau xaiv, thiab keeb kwm yav dhau yuav tsum tau qhov muag plooj.

Ntau yam

Muaj ob hom kev pom xws li: kab pheeb ces kaum thiab ncig.

Yeej optics muaj thaj chaw pom uas yog 180 degrees hauv ib qho kev taw qhia. Lub thav duab yuav tsis ua tiav nrog cov duab; ib daim duab dub yuav tsim rau ntawm ob sab. Cov iav no tsis tshua siv tshwj tsis yog kws yees duab muaj lub tswv yim tshwj xeeb kom tau txais vignetting.

Hais txog kab pheeb ces kaum lens, nws npog tib lub kaum sab xis ntawm kev pom, tab sis tsuas yog kab pheeb ces kaum. Qhov ntsug thiab kab rov tav tsawg dua 180 degrees. Lub thav duab tau muab ua ib lub duab plaub uas tsis muaj cov npoo dub. Cov tsom iav no tau txiav txim siab los ua qhov muaj txiaj ntsig ntau dua, thiab cov kws yees duab siv lawv thaum tua qhov xwm txheej, sab hauv thiab vaj tsev.

Fisheye ncig nce ntawm cov yeeb yaj kiab thiab cov koob yees duab digital nrog lub hli 35 sensor. Cov tsom iav tseeb uas ua qhov no yog cov tsom iav uas ntes tau tag nrho 180 degrees ntawm lawv qhov chaw dav tshaj plaws. Qee cov tuam ntxhab muaj cov qauv kho qhov muag nrog kev pab them nqi txog 220 degrees.

Txawm li cas los xij, nws tsim nyog sau cia tias cov iav no hnyav thiab loj, yog li lawv tsis tshua siv thiab tsuas yog cov kws tshaj lij tshaj lij.

Yog tias peb tham txog cov qauv ntawm qhov zoo sib xws, ces peb tuaj yeem hais txog Canon EF-S . Nws muaj lub hauv paus ruaj khov, thiab ua kom pom tseeb tsis siv neeg thiab tsis ua suab nrov. Lub lens qhov ua tau zoo heev, txawm tias thaum tua cov ntsiab lus lossis hauv cov xwm txheej uas tsis muaj lub teeb txaus.

16mm focal ntev muaj nyob hauv tus qauv Zenit Zaum C nrog phau ntawv hloov kho. Samyang 14 hli - qhov no yog phau ntawv lens. Lub lens convex tau tiv thaiv los ntawm cov khoom puas thiab ci. Qhov tshwj xeeb UMC txheej tiv thaiv cov nplaim taws. Kev ntse tau hloov kho tus kheej, vim tias tsis muaj kev siv tshuab hauv tus qauv no.

Cov Lus Qhia Xaiv

Thaum xaiv lub lens rau koj lub koob yees duab, muaj ntau qhov tseem ceeb los xav txog.

Koj yuav tsum tau them sai sai rau qhov sib xws ntawm lub lens nrog qhov loj ntawm lub koob yees duab sensor. Ntawm cov khoom siv thav duab puv ntoob, koj tsis tuaj yeem siv lub lens yam tsis tau txiav cov duab.

Hom kho qhov muag ua lub luag haujlwm tseem ceeb, yog li ua ntej koj yuav tsum txiav txim siab qhov txiaj ntsig koj xav tau thaum tua.

Saib lub kaum ntse ntse yog tus yam ntxwv tseem ceeb. Qhov dav nws yog, lub sijhawm tsawg dua thiab thav duab nws yuav siv los tsim cov duab panoramic. Nws raug nquahu kom koj nyeem cov lus qhia rau lub lens kom pom tias nws puas haum rau lub koob yees duab uas koj siv.

Cov lus qhia rau kev siv

Rau thawj qhov kev tua ntawm cov khoom saum ntuj ceeb tsheej koj tuaj yeem tsim kev sib xyaw los ntawm kev tso lub qab ntug rau hauv qhov chaw. Kev siv kab uas tsis tseem ceeb yuav cuam tshuam thaum thaij duab toj roob hauv pes. Yog hais tias lub qab ntug tsis pom tseeb hauv toj roob hauv pes, tsis txhob txhawj, vim qhov khoov yuav raug zais los ntawm toj lossis roob.

Koj tsis tas yuav tsum pib los ntawm lub qab ntug .… Koj tseem tuaj yeem taw lub koob yees duab kom tsom mus rau lub ces kaum zoo nkauj ntawm qhov. Ua tiav kev ywj pheej ntawm kev muaj tswv yim nthuav tawm nws tus kheej hauv huab cua huab cua, thaum cov phiaj xwm nyob deb tsis pom txhua. Hauv cov xwm txheej zoo li no, koj tsis tas yuav txhawj xeeb txog txoj kab nkhaus los ntawm kev tua nyob rau ib qho twg. Thaum tua cov ntoo ntoo nkhaus, koj tsis tas yuav sim ncaj lawv; lawv tuaj yeem siv los thav duab toj roob hauv pes.

Daim ntawv thov yeej-yeej fisheye yuav yog ze ze ntawm thaj chaw zoo nkauj . Qhov nrug deb me me, uas yog tam sim no nrog cov kev kho qhov muag, tso cai rau koj mus thaij duab macro. Nws yog qhov yooj yim los yees duab kheej kheej panoramas nrog lub kaum ntse ntse pom dav. Qhov no haum rau xwm thiab duab thaij duab. Hais txog cov duab , lawv yuav tawm los zoo nkauj dua, tab sis koj tuaj yeem sim.

Cov kws tshaj lij txiav txim siab lub lens fisheye los ua lub lens zoo tshaj plaws hauv qab . Nws yog nyob rau qhov xwm txheej ntawd qhov kev hloov pauv tsis pom tseeb, txij li cov txheej txheem tshwm sim hauv kab dej, qhov twg tsis muaj kab ncaj thiab qab ntug.

Koj yuav tsum tsis txhob tua ntawm qhov deb, vim qhov no yuav ua rau lub thav duab tsis muaj zog. Nws yog qhov zoo dua kom ze rau qhov khoom kom cov duab tsim raws li peb lub qhov muag pom nws.

Tam sim no cia saib cov txheej txheem pom tseeb

1. Thawj kauj ruam yog nyem rau ntawm lub viewfinder kom pom tag nrho cov thav duab.
2. Nco ntsoov tias cov ntsiab lus nyob ze, thiab koj tsis tas yuav nqa lub koob yees duab deb ntawm koj lub ntsej muag kom pom daim duab uas xav tau.
3. Nws yog ib qho tseem ceeb uas yuav tsum saib lub thav duab hla tag nrho kab pheeb ces kaum kom nws tiav. Ib qho yuam kev uas cov kws yees duab ua yog tsis ua tib zoo saib ib puag ncig ntawm daim duab. Yog li ntawd, nws yog ib qho tseem ceeb tshaj plaws los tshuaj xyuas txhua yam kom tsis muaj ib yam dab tsi txawv hauv kab.