DSLR-koob yees duab - dab tsi yog qhov no? Txheej txheem cej luam, cov nta, zoo thiab nta

Yog hais tias koj xav hais tias lub hwj chim ntawm koj compact koob yees duab koj tsis txhob, muaj txaus yog vim li cas them sai sai mus rau lub DSLR-koob yees duab. Cov niaj hnub pab kiag li lawm nrog cov duab loj sensors, superior optics, robust phau ntawv ntawm lwm yam uas, paub kev ua tau zoo thiab versatility ntawm interchangeable lo ntsiab muag. Txawm li cas los, tag nrho cov no ntxiv functionality yog kim, thiab tus nqi ntawm ib cov SLR koob yees duab yuav loj hlob, tshwj xeeb tshaj yog tom qab lub tshaaj ntxiv accessories.

Nyob rau hauv tas li ntawd, nws yuav tsum tau nco ntsoov tias cov nyiaj yog nyiaj ua lag luam nyob rau hauv DSLR-koob yees duab. Yog hais tias tus thawj ntaus ntawv yog ib tug Canon, nws yog ib co yuav hais tias tom ntej no yuav muaj ib tug qauv los ntawm tib lub chaw tsim tshuaj paus, kom nyob twj ywm siv tau laus lo ntsiab muag thiab accessories. Ntawm no yog cov tseem ceeb tshaj plaws yam yuav tau xav txog thaum yuav ib lub digital SLR koob yees duab, thiab cov npe nyob saum cov qauv uas twb muaj lawm hnub no.

Understanding sensor loj

Feem ntau cov neeg SLR siv duab sensors, uas nws qhov ntev txawm hais tias ntau tshaj li uas ntawm cov pa cov koob yees duab, tab sis me ntsis me dua cov hli 35 zaj duab xis ncej. Nws yuav ua tau ib tug me ntsis tsis meej pem thaum lawv sib tham txog lub teb pom ntawm lub koob yees duab, raws li cov focal lengths rau cog yog feem ntau yog muab piv rau cov 35-hli sib npaug. Standard sensor APS-C muaj ib tug 1.5-fold "qoob loo zoo tshaj". Qhov no txhais tau tias cov 18-55 hli lens uas los nrog rau feem ntau DSLRs npog ib hli 35 teb pom sib npaug rau 27-82,5 hli. Qhov no piv nrog ib tug 3 X zoom lens zoo tib yam lub koob yees duab nrog ib tug focal ntev ntawm 28 mm.

Nyob rau hauv loj sensor muaj ntau yam zoo. Nws tso cai rau koj kom zoo dua tswj lub tob ntawm daim teb duab - cais kwv thiab tsim tau ib lub qhov muag plooj tom qab. Cov nyhuv no yog feem ntau xa mus rau raws li Japanese sij hawm "bokeh". Nws ntau li ntau tau raug sau, tab sis cov kev cai no yog hais tias cov ntau lub teeb ntog rau hauv matrix uas txaus qhia lub diaphragm aperture los yog tus xov tooj ntawm zaus f, qhov ntau qhov muag plooj tom qab yuav ua li cas. Lens nrog ib tug tshaj plaws aperture ntawm f / 1.4 skips 8 lub sij hawm ntau lub teeb dua f / 4, thiab muaj peev xwm tsim ib tug shallower tob ntawm daim teb nyob rau ntawm ib sib npaug zos focal ntev thiab shooting deb.

Lwm vim li cas hais tias yog tsim nyog mus lawm kev xaiv rau ib tug loj sensor - yog txo duab suab nrov. 20-megapixel DSLR muaj ntau ntau pixels tshaj ib tug pa koob yees duab nrog tib daws teeb meem. Cov cia loj pixels teem ib tug ntau dua rhiab heev ntawm lub sensor raws li ntsuas nyob rau hauv cov daim ntawv raws li ISO, nrog ib tug tsawg dua cov suab nrov duab. Qhov kom zoo dua ntawm lub ntau dua deg hauv cheeb tsam cov lus dag nyob rau hauv lub fact tias hloov xim los sis qhov ci ntau gradual tshaj nyob rau hauv "Xab npum". Qhov no ua rau nws tau mus cuag ib tug ntau yam duab nrog ib tug ntau dua kev txiav txim zoo ntawm qhov tob.

full-ncej koob yees duab

Ib txhia SLR DSLR-koob yees duab (Canon EOS 6D) yog nruab nrog sensors uas yog sib npaug zos rau qhov luaj li cas ntawm hli 35 zaj duab xis. Cov ncej tas li yog feem ntau kim tshaj lawv cov counterparts nrog APS-C matrix. Yog hais tias nyob rau hauv lub neej yav tom ntej lub hom phiaj yog mus rau tag nrho cov ncej, yuav tsum tau ceev faj thaum yuav lo ntsiab muag. Ib txhia ntawm lawv yog tsim los siv nrog APS-C. Canon hu nws kab ntawm EF-S APS-C-lens, thiab cov lens yuav tsum vov tag nrho cov ncej, hu ua EF. Nikon DSLR-koob yees duab siv ib tug zoo xws li cov mus kom ze, npav "trimmed" optics ua ke DX, ib tug tag nrho cov ncej - FX. Sony lo ntsiab muag mus rau lawv APS-C ntxiv los DT, thiab Pentax DA hu lawv.

Xaiv lub koob yees duab

Nws yog ib qho tseem ceeb rau xaiv ib tug yees uas yog xis nyob rau hauv lub tes. Txawm tias feem ntau DSLRs yog zoo xws li cov nyob rau hauv loj thiab workmanship, style kov, txoj hauj lwm ntawm lwm yam uas, thiab lwm yam ergonomic nta tej zaum yuav txawv ho.

Cov xaiv cov DSLR koob yees duab yuav tsum yog tus zoo tshaj rau koj siv. Yog hais tias nws yog ib yam nkaus thiab loj loj los me me yuav xis, yog hais tias tus ntawm lwm yam uas yog tsis positioned raws li lawv xav no cov neeg siv, yuav muaj koj yuav tsis tau txaus siab rau shooting nyob rau hauv tag nrho.

lens reflex viewfinder

Los ntawm txhais DSLR nws muaj ib tug kho qhov muag viewfinder uas qhia txog cov duab yuav los ntawm lub koob yees duab lens, tab sis lawv yog tsis yog txhua txhua tib yam. Lub daim iav coj lub teeb rau ib qho ntawm ob hom viewfinders. Cov Thawj zaug ntawm lawv - pentamirror - feem ntau yog nyob rau nkag-qib pab kiag li lawm, xws li cov Canon EOS ntxeev siab SL1 muaj nqis 549,00 duas las los yog Nikon D5500. Nyob rau hauv no hom ntawm viewfinder dluab yog siv rau redirect 3 tsom iav nyob rau hauv lub qhov muag ntawm tus kws yees duab, uas muab nws kom nws hloov tawm mus rau yuav yog, raws li txwv mus ib tus inverted lub duab rau cov sensor nyob rau hauv lub neej tiag tiag.

pentaprism

Qhov thib ob hom viewfinder DSLR-koob yees duab - ib tug pentaprism. Nws yog ib tug khoom iav plaub, uas yog tib yam li pentamirror. Ua ntej, raws li ib tug txoj cai, cev ntas thiab zog tshaj lub thib ob. General brightness tswj lub framing ntawm cov dluab thiab tso cai rau koj kom zoo dua xyuas kom meej tias cov duab no yog nyob rau hauv kom pom tseeb. Pentaprism feem ntau pib tshwm nyob rau hauv lub mid-range SLR koob yees duab xws li cov EOS Canon 80D nqi ntawm 1199,00 US dollars, thiab yog tus txheej txheem rau kev daim ntaub ntawv xws li cov Canon EOS-1D X Mark II (5999,00 nyiaj). Pentax K-70 - ib qho ntawm ob peb nkag-qib qauv nrog lub viewfinder ntawm no hom, uas muaj ib tug ib puas feem pua kev pab them nqi. Qhov no pheej yig koob yees duab muaj tag nrho cov encapsulation rau siv nyob rau hauv los nag los yog los daus hnub.

Nws yuav tsum xyuam xim rau cov kev nce rau hauv qhov feem pua ntawm cov ncej thiab cover, raws li nws muab ib lub tswv yim ntawm lub sij luaj li cas ntawm daim duab no thiab qhia tau hais tias ntau npaum li cas ntawm cov yuav duab yuav tau pom. Nyob rau hauv ob qho tib si zaum nws yog zoo dua mus nrhiav rau lub siab tshaj plaws pes tsawg tus.

Lwm cov kev xaiv: EVF

Ib tug me me muaj pes tsawg tus ntawm SLR koob yees duab nyob rau hauv lub lag luam muaj ib tug kev xaiv thib peb viewfinder - hluav taws xob. Sony DSLR-lub koob yees duab nrog tsau semitransparent tsom iav, xws li Alpha ntawm 77 II, tej zaum raug xa mus rau SLT. Es tsis txhob redirecting lub teeb nyob rau hauv nws ob lub qhov muag, nws qhia rau nws pib kom pom tseeb sensor. Yog hais tias tus neeg siv yog tsis muab rau tus kho qhov muag viewfinder, cov koob yees duab yog muaj nqis ntug. Txawm lub flagship ncej tas Sony Alpha 99 siv ib tug nqi ntawm 1998 nyiaj OLED EVF, eschewing ib khob pentaprism, ntau nyob rau hauv lwm yam tag nrho-ncej SLR koob yees duab. Yog hais tias qhov kev xaiv no yog tsim, koj muaj peev xwm kuj tshawb thiab mirrorless lub koob yees duab - trimmed qauv uas muaj tib lub sensor me me li hais tias ntawm lub DSLR-aids, tab sis tsis muaj ib daim iav uas duplicates cov duab uas nkag rau hauv koj lub koob yees duab nyob rau hauv lub sij hawm.

nruam shooting

Piv nrog rau cov pa digital pab kiag li lawm DSLR-koob yees duab - nws kuj yog ib tug kub ceev. Lub sij hawm ntawm nias lub khawm shutter thiab capturing cov duab, hu ua shutter lag, thiab lub sij hawm ntawm kev txhaj tshuaj no feem ntau yog ib qho teeb meem ntawm kev cog lus ntawm cov koob yees duab. SLR koob yees duab yuav tsom heev sai sai, thiab shutter lag lawv yuav luag imperceptible. Nruam shooting yog ntsuas nyob rau hauv ntas ib ob. Peb yuav tsum nrhiav ib lub koob yees duab uas muaj peev xwm tua 3 k / s, txawm hais tias cov kev ua si kev pab txog thiab naturalists yuav xav tau ib tug apparatus mus ntes ib tug ceev ceev 5 K / s.

autofocus ceev

Ntawm cov hoob kawm, tus pib kom pom tseeb system yuav tsum kom mus nrog tus ncej nqi. Basic SLR koob yees duab xws li cov Nikon D3300, feem ntau tsuas muaj ob peb AF ntsiab lus, ua rau nws yooj yim mus taug mus yam khoom.

Thaum lub high-end koob yees duab Canon 7D Mark II thiab Nikon D500 AF ntsiab lus them ib feem coob ntawm tus ncej, uas ua rau lawv favorites ntawm cov neeg siv koom nyob rau hauv photographing ntaus pob ncaws pob txheej xwm thiab cov tsiaj qus. Nruam Shooting AF thiab mus tes hauv tes, ces nws yog ib qho tseem ceeb mus nrhiav lub koob yees duab uas muaj txaus ua tau zoo rau cov ob tsis.

Qhov pom ntawm qhov screen thiab HD-video

Video cov ntaubntawv povthawj siv yog tam sim no ib tug txheej txheem feature ntawm SLR koob yees duab. Peb yuav tsum saib rau ib tug uas ua rau cov autofocus thaum lub sij hawm txias. Koj yuav tsum tau xyuas cov kev ceev ntawm pib kom pom tseeb thaum shooting nyob rau hauv nyob saib hom, raws li nws muaj peev xwm feem ntau yuav qeeb heev. Canon tau ua kev kawm nyob rau hauv ua cov kev ceev ntawm autofocus thaum teev video nyob rau hauv cov qauv T6s thiab 70D, ib tug Sony koob yees duab kom pom tseeb li sai sai, thaum cov ntaubntawv povthawj siv video, raws li zoo raws li thaum photographing. Yog hais tias tus neeg siv yog npaj rau siv cov video ntau, nws yog ib qho tseem ceeb hauv lub xub ntiag ntawm ib tug microphone tswv yim jack - sab nraum yuav hlawv npaum li cas zoo dua ua.

telephoto Lens

Feem ntau cov tshiab cov SLR pab cov neeg siv tsis mus yuav ntxiv optics, tab sis muaj cov neeg uas xav txog nws tsim nyog mus cuag tus txheej txheem. Ua ntej ntawm tag nrho cov, nyob rau hauv tas li ntawd mus rau tus txheej txheem 18-55 hli telephoto lens yog xaiv. Nws yog siv raws li txoj cai, nce mus nce los zoom, pib ntawm 55 hli thiab xov nrog rau 200 hli los yog 300 hli uas yuav tsim ntau tshaj qhov approximate ntev txhaj tshuaj. Plan cov nqi rau tej optics yuav tsum tau muab 200-300 US dollars.

hli 35 lens

Lwm nrov hom optics yog tus ceev tshaj, nrog ib tug ib txwm lub prime lens. Ua ntej lub zoom lo ntsiab muag ua nrov, zaj duab xis SLR koob yees duab yog feem ntau yog muab nrog optics 50 hli f / 2. Vim hais tias ntawm cov me sensor nyob rau hauv neeg SLR hnub no, qhov no raws li ib tug 35 hli f / 2.

Standard lub muab lub teb pom, uas yog yuav luag indistinguishable los ntawm tib neeg lub qhov muag, thiab tso cai rau ceev aperture shooting nyob rau hauv tsawg lub teeb tej yam kev mob, raws li tau zoo raws li cais tawm tus kwv los ntawm blurring tus keeb kwm yav dhau. Nyob rau hauv lub DSLR-koob yees duab nqi ntawm cov lo ntsiab muag yuav sib txawv, tab sis nws yuav tsum hais tias nws yuav ua tau nyob rau hauv ntau ntawm 175 rau 350 US dollars.

lwm flash

Txawm tias muaj tseeb hais tias cov neeg siv SLR koob yees duab feem ntau yog muaj ib tug built-in flash, ntau yam kev pab xav cov haib tshaj lwm pab kiag li lawm. Lawv emit ntau lub teeb, thiab feem ntau lawv yuav tsum tau tsiv mus rau pub rau illumination ntawm cov kwv mus siv reflected teeb. Thaws flash tawm lub qab nthab los taws rau tag nrho chav yuav ua tau tiav nrog rau cov kev pab los ntawm ib tug tshwj xeeb ntaus ntawv, tab sis tsis rub-system DSLR-koob yees duab. Nyob ntawm seb cov kev xav tau nyob rau hauv lub zog them lub sij hawm thiab tau hloov lub sab nraud flash yuav ua tau 150 mus rau 500 US dollars.

lwm cov ntaub thaiv npog

Saib rau DSLR-koob yees duab eliminates ntawm cov kev txwv ntawm cov tshuaj ntsuam me me nyob rau hauv lub rear vaj huam sib luag ntawm cov koob yees duab, uas tsis pub muaj tseeb ntawm thaum lub sij hawm shooting, kom pace daim ntawv ceeb toom tseem ceeb thiab ntxoov ntxoo, kho dawb tshuav nyiaj li cas thiab shooting nyob rau ib tug loj lub.

stabilizer

Stabilizer DSLR-koob yees duab - ib tug ntaus ntawv uas yuav txo pliaj zog. Piv txwv li, ib tug triaxial DJI Ronin-M nrog ib tug hluav taws xob raug tshem tawm rau cov koob yees duab uas mus txog 3.6 kg. Nws muab tag nrho txoj kev ywj pheej ntawm tus kws yees duab thaum ua hauj lwm nyob rau hauv txhaj tshuaj rau 6 teev - lub sij hawm no, lub roj teeb lub neej rau ib tug hluas roj teeb xwb. Nws yog txaus rau kev txhim kho lub koob yees duab thiab sib npaug nws, thiab ua-nyob rau hauv processor yuav ua tus yam chaw. Cov neeg ntawm 0,02 ° kom los siav lub feem ntau xav tau cov tub txawg.

Nyob rau hauv tas li ntawd, tej thaj chaw deb stabilizer tswj ntawm Bluetooth thiab daim ntaub ntawv rau iOS no. Txhawb kev DJI LightBridge module tias transmits video ntawm ib tug deb ntawm 1.5 km.

hnab

Lwm tsim nyog accessory - ib lub hnab rau DSLR-koob yees duab. Sony LCS-BDF, piv txwv li, yog ib tug yooj yim thiab compact rooj plaub uas tuas lub koob yees duab, zoom lens thiab ntxiv optics. Ntxaij twb nyob rau hauv pem hauv ntej no yog tsim rau tsheb thauj mus los thiab cia ntawm ntau yam xov xwm, cov ntxaij lim dej, thiab hais txog. N. Muaj yog ib qho ntxiv hnab tshos nyob tom qab thiab lub xub pwg pluaj nrog mos tshem hauv ob sab phlu.