Lens "Fisheye" - ib tug tiag tiag kev sib hlub duab

Cov kos duab ntawm photography muaj ib tug ntau ntawm nthuav thiab txawv txawv daws cov teeb meem thiab tricks uas tso cai rau koj mus tsis tau tsuas yog kom raug thiab beautifully tso saib tag nrho cov kev zoo nkauj ntawm lub ntiaj teb no, tab sis kuj yuav tsim tiag tiag masterpieces. Ib txhia ntawm lawv yog li ntawd, weird thiab zoo kawg nkaus uas zoo li fairy tej yam yees siv daim duab. Tab sis qhov tiag kos duab - tsis tau hloov cov duab tshaj Vocabulary, tab sis tsuas yog muab nws ib tug tshwj xeeb lub povhaum nrog me me tricks.

Lens "Fisheye" - yog ib tug zoo kawg nkaus foundations rau ob qho tib si amateurs thiab cov tub txawg. Nws muaj ib tug tshaj plaws kaum sab xis ntawm view - 180 °, thiab cov distortion uas yog tam sim no thaum shooting, muab ib qho kev nthuav thiab thawj cov nyhuv.

Lub hauv paus ntsiab lus lub hom phiaj ntawm kev ua hauj lwm, lub ntau yam

Lub npe ntawm lub lens "fisheye" tau txais nyob rau hauv 1906. Robert Vud hais tias raws li ib tug duab nrog nws pab, cov ntses pom lub ntiaj teb nto los ntawm cov dej. Ib tug duab zoo sib xws peb pom nyob rau hauv lub peephole. Distortion (distortion) tshwm sim heev xav, tsuas yog ib tug me me rau thaj tsam nyob rau hauv qhov chaw ntawm ib tug ntau dua los yog tsawg hnov mus rau lawv tiag tiag-lub ntiaj teb no tsis. Peb siv nws ua ntej nyob rau hauv huab cua, tsuas yog mus saib tag nrho cov vaj xilethi-aus tus kheej.

Nws yog nthuav tias tam sim no no lens yog siv nyob rau hauv scientific tej hauj lwm, thaum muaj ib tug yuav tsum tau ua kom lub siab tshaj plaws saib lub. Thiab rau cov amateurs nws yog ib tug zoo kawg nkaus xyuas, uas yuav siv tau los tsim thawj ua hauj lwm los yog architectural ua hauj lwm, funny portraits thiab ntau npaum li cas.

Lens "Fisheye" muaj ob ntau hom kev. Tus thawj ntawm no yog hu ua yeej los yog yeej. Nws muab ib tug ua tiav daim duab ntawm ib lub voj voog, tsim thawj daim duab. Lub kaum sab xis ntawm lub zeem muag - 180 °. Tab sis, nyob rau hauv qhov tseeb, nws ua hauj lwm ib yam nkaus li lwm cov lo ntsiab muag, capturing tsuas ib feem ntawm cov sensor - ib tug duab plaub uas yuav haum nyob rau hauv txoj kab uas hla ntawm lub lens. Qhov no duab plaub, thiab ces ua ib tug yeej duab. Feem ntau tsim xws li ib tug lub tswv yim accessories nyob rau hauv 35 hli hom. Lawv focal ntev - 8 hli.

Yuav ua li cas lwm tus yuav ua tau tus kwv uas "ntses-qhov muag"? Qhov thib ob xaiv yog hu ua ib tug kab pheeb ces kaum los yog ib tug tag nrho-ncej lens. Nyob rau hauv cov ntaub ntawv no, tag nrho cov sensor cheeb tsam, thiab lub kaum sab xis ntawm saib yog 180 ° tsuas diagonally. Horizontally nws yog kwv yees li 147 °, thiab mas - 95 °.

Qhia cov lo ntsiab muag es arbitrary - nws tag nrho cov nyob rau hauv dab tsi yog ib feem ntawm lub sensor siv. Yog li ntawd, cov nyhuv ntawm tus txheej txheem "fisheye" lens yuav muab txhua yam ntawm txawv yuav xwb nyob rau hauv lub loj ntawm lub sensor. Cov accessories yog kim heev, thiab tej zaum lawv sim los hloov tej yam yooj yim converters. Converter yog hnav nyob rau ib tug dog dig lens, dramatically hloov nws lub. Lawv cia koj mus ua loj hom dluab nyob rau tej koob yees duab. Nyob rau hauv cov ntaub ntawv no, yog li ntawd cov duab zoo zoo, nws yog tsim nyog los daim ntawv ntsuam xyuas ntawm me me diaphragm.

Yuav ua li cas kom tshem tawm cov lens "Fisheye" - lub ntsiab yooj nyeem ntawv duab

Ib tug loj ntxiv ntawm no hom ntawm lens - muaj tsis muaj teeb meem nrog cov duab kom pom tseeb. cov duab no yog heev ntshiab thiab kev paub qhia lo tsaug rau qhov loj hu cheeb tsam nrog rau lub teeb. Central kab (kab rov tav thiab ntsug) yog tsis cuam tshuam.

Cov nyhuv ntawm "ntses qhov muag" zoo nkaus li zoo thaum photographing lub ntuj. Nyob rau hauv lub hav zoov, ntawm lub tsev, los yog tsuas yog saum ntuj ceeb tsheej nws tus kheej dome yuav raug tshem tawm nrog ncig lens.

Qhov ntau nam piv tso cai rau koj coj cov duab nyob ze ntawm lub architectural khoom. Rau cov duab muab tawm ib tug harmonious, peb yuav tsum sim mus soj ntsuam nws cov uas duav txhua yam - mus cuag kab rov tav los ntsug kab nrog tus qauv ntsiab.

Funny portraits los yog cia li funny duab tau ntawm shooting lens "fisheye". Lub hauv paus cheeb tsam ntawm lub kawg distorted, yog li ntawd yog qhov twg mus rau qhov chaw lub ntsiab kev kawm. Plaub ces kaum aav - qhov chaw ntawm lub siab tshaj plaws distortion.