Yuav ua li cas kom tsis txhob muaj teeb meem thiab kho lub lens distortion
Koj puas tau noj ib daim duab uas cov kab ncaj nraim hneev tawm thiab ua nkhaus rau ntawm ntug kev? Tom qab ntawd koj yuav tsum kawm txog kev kho lub lens phom distortion hauv photography, uas yog ib qho teeb meem tshwm sim uas tshwm thaum siv lub lens wide-angle.
Thaum cov nyhuv no tuaj yeem hais tau rau qee zaus - xws li cov duab kos duab tau pom ntawm no - muaj ntau lub sij hawm uas koj yuav xav kom tsis txhob muaj thiab muaj zoo, ncaj ncaj. Qhov no yog qhov tseeb tshwj xeeb tshaj yog thaum sau lub tuam tsev thiab koj xav tau cov kab ntawm lub architecture kom ncaj raws li lawv nyob hauv lub neej tiag tiag.
Cov xov xwm zoo tshaj yog tias qhov lens distortion muaj peev xwm raug kho, tab sis ua ntej, nws yog ib qho tseem ceeb kom to taub yog vim li cas nws tshwm sim.
Dab tsi yog Chim Lens Distortion?
Lub lens distortion yog ib qho kev cuam tshuam nrog ntau lub-lens lo ntsiab muag thiab, hauv particular, zoom wide-angles.
Cov nyhuv no ua rau cov duab tig mus, uas txhais tau hais tias cov duab ntawm cov duab zoo li nkhaus thiab nyo hau rau tib neeg qhov muag. Nws zoo nkaus li zoo nkaus li tus duab thaij duab tau muab tso rau ntawm ib qho chaw saum npoo. Nws yog feem ntau pom nyob rau hauv cov duab uas muaj cov kab ncaj nraim rau lawv, vim cov kab no tshwm rau hneev thiab nkhaus.
Qhov lens distortion tshwm sim vim hais tias magnification ntawm cov duab decreases qhov farther tus kwv yog ntawm qhov axis optical ntawm lub lens. Lo ntsiab muag dav hlau muaj ntau daim iav uas yog nkhaus ces qhov feem ntawm daim duab uas muaj nyob ntawm tus ntug ntawm cov ncej yuav ua tau zoo thiab yuav muaj kev cuam tshuam no curvature.
Qee qhov lo ntsiab muag, xws li fisheye lo ntsiab muag, sim coj kom zoo dua ntawm lens phom distortion los ntawm kev tsim ib daim duab uas yog hom phiaj nkhaus. Nws yog qhov cuam tshuam thaum siv rau lub hom phiaj zoo thiab nrog txoj kev sib tham. Qee cov tsom iav fisheye yog li huab uas cov duab thaij duab los ua qhov zoo nkauj, tsis yog qhov zoo li cov duab uas muaj ntau dua.
Yuav ua li cas txhim kho Chim siab Lens Distortion
Cheeb distortion tau kho yooj yim heev hauv cov duab niaj hnub editing xws li Adobe Photoshop, uas muaj lub lens distortion hloov lim. Ntau cov kev pabcuam dawb hauv kev kho duab kuj muaj cov kev daws teebmeem.
Raws li kev sib ntxub yog tshwm sim los ntawm cov teeb meem ntawm qhov kev xav ntawm lub lens, txoj kev tsuas yog kho kom qhov lens distortion nyob rau hauv lub koob yees duab yog siv qhov tshwj xeeb "tilt and shift" lens, uas yog tsim rau cov qauv vaj tse. Txawm li cas los xij, cov lo ntsiab muag no kim heev, thiab tsuas yog qhov kev txiav txim siab yog tias koj khov kho nyob hauv daim teb no.
Yog tias koj tsis tuaj yeem tiv thaiv lub lens distortion nrog lub lens tshwj xeeb los sis yog tias koj tsis xav ua ntau ntau editing tom qab qhov tseeb, koj tuaj yeem txo cov kev cuam tshuam ntawm qhov lens distortion thaum koj thaij duab.
- Sim kom tsis txhob tua cov vaj tse lossis lwm yam khoom uas muaj kev huv, ncaj ncaj, qhov twg qhov kev sib daj sib deev yuav pom tseeb. Tsawg kawg ua kom tsis txhob tuaj yeem tua lawv nrog lub lens lub dav heev. Rov qab yog tias koj xav tau ntau tshaj ntawm cov ntawv rau hauv daim duab.
- Khaws cov kab ncaj nraim hauv daim duab kom ze rau qhov chaw ntawm lub lens kom ntau li ntau tau. Yuav muaj tsawg distortion mus rau nruab nrab tshaj muaj nyob rau ntawm ntug.
- Raws li koj tua ib qho khoom, siv ob peb cov duab ntawm tib lub khoom , siv ntau yam zoom lens magnification ntau ntau. Cov distortion yuav tsis pom tseeb ntawm ib zoom zoom tiv thaiv lwm.
Tab sis nws yog feem ntau tawm tsam kev txiav txim zoo dua, qhov kev ywj pheej ntawm ib daim duab JPG yuav qee zaum qhov txawv txav. Tej zaum koj yuav xav xav txog kev hloov ntawm RAW kom pom tias qhov no yuav pab koj qhov teeb meem.
Kho cov lens thim distortion yog tsis nyuaj li nws lub suab thaum koj ua raws li qee cov kauj ruam ntawm no. Thiab tej zaum yuav muaj sij hawm uas koj tsis xav kho nws, yog li khawm cov distortion! Thaum koj tiv thaiv tsis tau nws, mus nrog nws thiab ua kom zoo tshaj plaws. Lub curvature ntawm kab yuav kho kom tsim tau ib qho kev zoo saib hauv koj daim duab.