Vignetting - nws yog dab tsi hauv kev yees duab? kev yees duab

2024 Tus sau: Sierra Becker | [email protected]. Kawg hloov kho: 2024-02-26 05:10

Muaj ntau txoj hauv kev los qhia qhov tseem ceeb hauv tus ncej. Txhawm rau ua qhov no, koj tuaj yeem siv txoj kev sib txawv ntawm lub teeb thiab xim los yog tsom rau cov kab thiab thav ntawv uas yuav tuav tus neeg saib lub qhov muag ntawm lub ntsiab khoom ntawm koj tus ncej. Tab sis qhov yooj yim thiab ceev tshaj txoj kev xaiv yog vignetting. Nws yog dab tsi? Hauv peb tsab xov xwm, peb yuav teb cov lus nug no kom ntxaws.

Ib me ntsis ntawm txoj kev xav

Pom zoo tias nws yuav luag tsis tuaj yeem ua tiav cov duab zoo meej ncaj qha los ntawm lub koob yees duab. Qhov tseeb, txhua tus neeg ib txwm muaj qee qhov tsis zoo. Txhawm rau tshem tawm lawv, cov duab kho duab zoo li Photoshop lossis Lightroom tau tsim. Txhua tus kws yees duab (ob tus kws tshaj lij thiab cov neeg nyiam ua haujlwm) hauv nws txoj haujlwm tau tuaj hla cov haujlwm no. Lawv tso cai rau koj los ua cov duab hauv kev ua yeeb yam los ntawm "raws" thav duab.

Txhua tus siv zog los ua tus tswv ntau yam txuj ci thiab cov cuab yeej ntawm cov kev pab cuam no kom lawv cov duab muaj yeeb yuj thiab muaj zog. Tab sis tag nrho cov no yog ntau tus kws tshaj lij. Yuav ua li cas rau loversDuab? Muaj ib txoj kev tawm - vignetting. Nws yog dab tsi? Nco ntsoov tias lo lus no tuaj rau peb los ntawm Fabkis, qhov twg vignette txhais tau tias "screen saver".

Hauv cov lus yooj yooj yim, vignetting txhais tau tias ua kom cov duab nyob ib ncig ntawm ntug ntawm tus ncej. Hais lus ua lus tshaj lij, qhov no yog ib feem kev txwv ntawm inclined beams ntawm lub teeb nrog kev pab los ntawm thav duab los yog diaphragms ntawm lub kho qhov muag system. Nws yog qhov raug ntau dua rau cov lo ntsiab muag telephoto thiab kho qhov muag nrog lub zog siab.

Vignetting hauv lub koob yees duab yog qhov tshwm sim ntawm kev siv lub lens los ntawm lub koob yees duab puv ntawm lub koob yees duab nrog APS-C sensor. Qhov no yog tag nrho vim yog qhov tseeb tias puv-ncej thiab qoob loo sensors muaj qhov sib txawv saib vim qhov sib txawv ntawm lawv qhov ntau thiab tsawg.

Piv txwv li, yog tias koj muab 50mm lens los ntawm tag nrho cov ncej ntawm lub koob yees duab downsized, koj yuav tsis tau tib yam 50mm. Qhov no twb yuav nyob ib ncig ntawm 75 hli, nyob ntawm seb loj npaum li cas cov qoob loo. Hauv qhov no, vignetting tshwm. Nws tuaj yeem yog qhov yuav luag tsis pom lossis pom meej meej. Piv txwv li, thaum peb pom ib lub voj voog nrog ntse, txawm cov npoo ntawm tus ncej, xws li vignetting tshwm sim feem ntau thaum siv lub kaum sab xis dav xws li MC Zenitar 16mm.

Tab sis kuj tseem muaj vignetting siv hauv kev kos duab zoo nkauj ua ib txoj hauv kev los qhia cov ntsiab lus tseem ceeb. Tom qab siv cov txheej txheem no, me ntsis darkening yog artificially tsim ntawm cov npoo ntawm tus ncej. Nws yog ib qho nyuaj rau pom nws rau ib tug neeg, txawm rau ib tug neeg uas yog heev versed nyob rau hauv kev yees duab. Koj yuav tsis pom qhov teebmeem notshwj tsis yog koj paub tias nws tau siv rau tus ncej.

Qhov kev hloov maj mam shading ua haujlwm hauv txoj kev ntse heev. Nws zoo nkaus li tau sim tuav koj lub ntsej muag ntawm daim duab, tsis txhob cia nws mus rau sab. Nws pab qhia rau tus saib seb koj xav qhia dab tsi rau nws. Yog tias tsis muaj vignetting, tus saib lub qhov muag yuav mus rau cov khoom uas koj tsis xav muab tso rau hauv zaub.

Vignetting hauv kev yees duab tuaj yeem tsis yog qhov tsaus ntuj, tab sis kuj ci ntsa iab. Cov nyhuv no yog xav tau nyob rau hauv rooj plaub uas koj daim duab muaj lub siab zoo siab lossis xim ci. Koj tsis xav kom tsaus ntuj ntawm cov npoo, vim tias cov khoom tseem ceeb ntawm kev txaus siab yuav ci ntsa iab, thiab tom qab ib puag ncig nws yuav dhau los ua npub thiab tsaus muag, yog li siv cov txheej txheem lightening. Hauv qhov no, cov khoom koj xav tau yuav sib koom ua ke rau hauv lub teeb dav dav thiab yuav tsis tsuas yog tuav lub qhov muag xwb, tab sis kuj ntxiv rau cov duab ntawm tus phab ej.

Vignetting lub hom phiaj

Yog tias koj xav ua kom pom tseeb ntawm cov neeg uas yuav saib koj cov duab ntawm ib yam dab tsi, siv vignetting. Nws yog dab tsi, peb piav saum toj no. Nws siv rau lub hom phiaj twg? Yeej, los tsim ib qho kev tsis pom kev tsis pom kev rau tus saib saib. Nws yuav tsum tau muab sau tseg ntawm no hais tias nws yuav tsum tau siv nyob rau hauv me me "doses" thiaj li hais tias tus saib tsis tau pom qhov ntes. Cov nyhuv vignetting yuav tsum tau ua tib zoo ntxiv. Txwv tsis pub, tus saib yuav xav tias koj daim duab tsis zoo tag nrho, thiab yuav tsis txaus siab rau koj txoj haujlwm.

Photoshop

NowCia peb saib yuav ua li cas ua vignetting. Peb yuav kawm ntau txoj hauv kev siv cov piv txwv ntawm cov kev pab cuam sib txawv. Cia peb pib nrog ntau cov duab editor, uas yog hu ua Photoshop. Hauv qhov program no, peb tuaj yeem ntxiv vignette rau ib lub thav duab hauv peb txoj kev sib txawv.

Txoj kev yooj yim tshaj plaws los tsim vignetting yog dab tsi? Khiav qhov kev pab cuam, qhib cov duab uas koj xav ntxiv cov nyhuv no. Tom qab ntawd tsim ib txheej khoob tshiab rau saum koj daim duab. Tom ntej no, siv qhov sau lossis Alt + Del tseem ceeb ua ke, sau cov txheej no nrog cov xim dub. Tom ntej no, ntxiv daim npog qhov ncauj rau nws.

Koj tuaj yeem sau cov txheej txheem no nrog cov xim dub rau dawb. Gradiments tuaj nyob rau hauv ntau hom, xws li radial, kab pheeb ces kaum, los yog ib tug ntug ntawm daim duab. Yog li ntawd, koj tau txais cov nyhuv no sai sai.

Yog tias koj xav tias vignetting hais tau dhau lawm, koj tuaj yeem txo qhov opacity ntawm gradient npog txheej.

thib ob txoj kev

Hauv qhov no, koj yuav tsum tsim "Curves" txheej txheej hloov. Khoov qhov nkhaus nyob rau hauv kwv yees li ib yam li qhia hauv daim duab kom tag nrho daim duab toned thiab darkened.

Raws li hauv thawj txoj kev, sau cov txheej txheem no nrog gradient. Koj kuj tau txais vignette, tab sis tsis zoo li thawj daim duab, nws zoo li ntuj thiab tsis tawg qhov sib piv ntawm tag nrho cov haujlwm.

Txoj kev no tso cai rau kojua kom cov duab tsaus ntau tiag tiag yam tsis poob xim ntawm daim duab.

Third method

Nws tso cai rau koj los tsim vignette siv ntu "Filter". Txhawm rau siv nws, koj yuav tsum tau theej txheej txheej nrog koj daim duab siv cov keyboard shortcut Ctrl + J. Tom ntej no, mus rau "Filter", xaiv "Distortion Correction" seem. Hauv qhov rai uas qhib, mus rau "Kev Cai" tab thiab nrhiav cov ntu "Vignette". Ntawm no koj yuav pom ob sliders rau "Effect" thiab "Mid Point". Yog tias koj rub thawj tus, koj tuaj yeem hloov qhov tsaus ntuj lossis teeb pom kev ntawm daim duab. Drag no slider mus rau sab laug ua rau vignette darker, thaum dragging nws mus rau sab xis ua rau nws sib zog. Lub Midpoint slider kho qhov loj ntawm koj vignette (ntau npaum li cas nws yuav protrude los ntawm cov npoo ntawm koj daim duab).

Lightroom

Txhawm rau tsim vignette hauv Lightroom, koj yuav tsum mus rau ntawm "Effects" tab thiab nrhiav ntu "Vignette". Tom ntej no, koj pom tsib sliders uas yog lub luag hauj lwm rau cov vignetting tsis. Thawj yog lub luag haujlwm rau lub zog ntawm cov nyhuv, uas yog, nws ua haujlwm tib yam li cov slider zoo sib xws hauv Photoshop. Qhov thib ob yog lub luag haujlwm rau tus nqi nruab nrab. Txhawm rau pom cov txiaj ntsig no tshaj plaws, koj tuaj yeem tuav lub pob Alt.

Txawb lub slider sab laug lossis sab xis kom pom tus nqi ntawm qhov ntsuas no rau 100% nyhuv. Qhov no yog qhov tsim nyog thaum koj teeb tsa cov nyhuv vignette rau cov nqi qis. Hauv qhov no, ib qho kev hloov pauv tsis pom zoo. Qhov thib peb slider tswj cov duab ntawm lub vignette. Ntawd yog, nws tuaj yeem ua rau nws ob qho tib si sib npaug,thiab ntau elongated duab. Qhov thib plaub yog lub luag haujlwm rau feathering cov npoo ntawm tus ncej kom daim ntawv thov ntawm cov nyhuv no tsis pom zoo.

Zaj lus

Thaum kawg, kuv xav qhia koj txog qee qhov zais cia ntawm kev yees duab rau cov pib tshiab. Sim txo qhov kev tua hauv hom tsis siv neeg. Tsis txhob cia lub koob yees duab nyiag koj ntawm koj lub tswv yim. Hom tsis siv neeg sim coj cov duab nruab nrab feem ntau, nws tsis paub yuav ua li cas los twv koj cov kev xav. Cia li nco ntsoov.

Nyob rau hauv ib qho lag luam, kom ua tiav ib yam dab tsi, koj yuav tsum tau siv zog ntau. Pib kawm peb qhov tseem ceeb tshaj plaws ntawm kev yees duab: shutter ceev, aperture thiab ISO. Txo cov duab JPEG tsawg, tua hauv RAW. Hom ntawv no yuav tso cai rau koj kho qhov nyiaj tshuav dawb, thiab tau txais cov ntaub ntawv ntxiv los ntawm cov duab ntxoov ntxoo. Nco ntsoov, nws yog qhov zoo dua rau underexpose ib tug ncej tshaj overexpose nws. Hauv hom ntawv RAW, koj tuaj yeem yuav luag ib txwm khaws thiab kho cov ntsiab lus los ntawm qhov chaw tsaus, tab sis qee yam zoo yuav tsis ua haujlwm tawm ntawm lub thav duab uas overexposed.

Peb tau npog qhov tseem ceeb tshaj plaws ntawm vignetting. Dab tsi yog tam sim no meej rau txhua tus nyeem.