Cov Lens Ruaj Khov Zoo Tshaj Plaws rau Cov Koob Yees Duab Digital
Hauv ntiaj teb kev thaij duab digital, cov lens feem ntau suav hais tias yog "cov ntshav tseem ceeb" ntawm lub koob yees duab. Lub cev ntawm lub koob yees duab yuav hloov zuj zus mus ntau tiam neeg, tab sis lub lens zoo tuaj yeem siv tau ntau xyoo thiab tseem ceeb. Ib hom lens uas pom zoo tshaj plaws, rau cov neeg pib tshiab thiab cov kws thaij duab uas muaj kev paub dhau los, yog lub lens prime. Cov lens prime paub txog lawv qhov ntse, qhov dav dav, thiab cov yam ntxwv zoo ntawm cov duab. Tsab xov xwm no tham txog lub lens prime yog dab tsi, nws cov txiaj ntsig, yuav xaiv li cas, thiab cov lus pom zoo rau cov koob yees duab digital raws li koj cov kev xav tau thaij duab.
Lub Lens Ruaj Khov yog dab tsi?
Lub lens prime yog lub lens uas muaj qhov ntev focal ruaj khov, xws li 35mm, 50mm, lossis 85mm. Tsis zoo li lub lens zoom, uas tuaj yeem hloov kho tau (piv txwv li, 24–70mm), lub lens prime yuam kom tus kws thaij duab kho qhov kev teeb tsa los ntawm kev hloov txoj haujlwm lossis hloov qhov deb ntawm tus neeg. Qhov tseeb, qhov kev txwv no feem ntau ua rau cov kws thaij duab muaj tswv yim ntau dua thiab nkag siab ntau dua rau qhov kev xav.
Cov tsom iav prime kuj yog cov uas muaj qhov loj xws li f/1.8, f/1.4, lossis txawm tias f/1.2. Qhov qhov loj no ua rau cov tsom iav prime zoo dua hauv qhov chaw tsaus ntuj thiab ua rau cov keeb kwm yav dhau los tsis meej (bokeh).
Vim li cas cov tsom iav Prime thiaj suav tias yog qhov zoo tshaj plaws?
Tsis yog txhua lub lens autofocus zoo dua li cov lens zoom, tab sis hauv ntau qhov xwm txheej, lawv muaj cov txiaj ntsig zoo. Nov yog qee qhov laj thawj vim li cas lub lens focus feem ntau suav tias yog qhov kev xaiv zoo tshaj plaws rau cov koob yees duab digital:
1. Duab siab dua
Nyob rau hauv kev pom kev, cov iav tsom iav prime feem ntau yooj yim dua li cov iav tsom iav zoom. Yog tias muaj tsawg yam khoom txav thiab kev tsim qauv tsis sib haum xeeb, qhov yooj yim dua los tsim cov duab ntse, muaj kev sib piv siab, thiab cov duab ntxaws ntxaws, tshwj xeeb tshaj yog ntawm qhov nruab nrab apertures xws li f/2.8–f/5.6.
2. Qhov Aperture Loj Dua Rau Qhov Teeb Tsawg
Cov iav tsom iav nrov xws li 50mm f/1.8 lossis 35mm f/1.4 tso cai rau koj thaij duab hauv chav tsaus ntuj yam tsis tas yuav tsa ISO siab dhau. Qhov no ua rau muaj suab nrov tsawg dua thiab xim huv dua.
3. Bokeh Zoo Nkauj Dua
Rau cov neeg nyiam thaij duab portrait, lub lens prime yog riam phom zoo tshaj plaws. Lub qhov aperture dav ua rau qhov tob ntawm daim duab tsis tob, ua rau tus neeg pom tsis meej pem ntawm keeb kwm yav dhau. Qhov no ua rau daim duab zoo li kev tshaj lij thiab zoo li cinematic dua.
4. Loj dua thiab sib zog dua
Muaj ntau lub lens prime uas me me thiab tsis hnyav. Qhov no ua rau lawv yooj yim nqa mus ncig teb chaws, thaij duab hauv txoj kev, lossis thaij duab txhua hnub yam tsis muaj kev nkees.
5. Qhia Txog Kev Sau Ntawv Thiab Kev Muaj Tswv Yim
Vim tias qhov ntev ntawm lub lens tsis tuaj yeem hloov pauv, koj kawm nyeem qhov xwm txheej: thaum twg yuav tsum mus ze dua, thaum twg yuav tsum thim rov qab, thiab yuav ua li cas thiaj li teeb tau qhov chaw. Ntau tus kws thaij duab pom tias lawv cov txuj ci kev teeb tsa zoo dua tom qab siv lub lens prime tas li.
Xaiv Lub Lens Zoo Tshaj Plaws: Ua tib zoo saib xyuas koj cov kev xav tau
Ua ntej yuav lub lens prime, xub txiav txim siab seb koj nyiam hom duab twg thiab xav tau dab tsi. "Zoo tshaj plaws" tsis yog txhais tau tias kim tshaj plaws, tab sis yog hom uas haum rau koj hom duab tshaj plaws.
1. Rau Portrait: 85mm lossis 50mm
- 85 hli yog lub koob yees duab zoo nkauj vim nws muab kev sib piv ntawm lub ntsej muag thiab lub cev.
– 50 hli yog qhov yooj ywm dua, siv tau rau cov duab ib nrab lub cev mus rau tag nrho lub cev, thiab kuj tsim nyog rau cov duab txhua hnub.
Yog tias koj siv lub koob yees duab APS-C (crop sensor), 50mm yuav zoo li 75mm (nyob ntawm lub hom), ua rau nws zoo meej rau kev thaij duab.
2. Rau Txoj Kev thiab Cov Ntaub Ntawv: 35mm
Lub lens 35mm zoo meej rau kev thaij duab ntawm txoj kev vim nws lub kaum sab xis yog qhov ntuj, dav txaus los thaij duab ib puag ncig, tab sis xis nyob txaus los thaij duab tib neeg yam tsis muaj kev cuam tshuam ntau dhau. Ntawm lub koob yees duab APS-C, 35mm yuav zoo li li 50mm, ua rau nws yog lub lens siv tau ntau yam.
3. Rau Toj roob hauv pes thiab Architecture: 24mm lossis 20mm
Yog xav thaij duab thaj chaw dav dav, lub lens prime wide-angle zoo li 24mm lossis 20mm muab cov ntsiab lus meej thiab ntse heev. Txawm li cas los xij, koj yuav tsum ceev faj ntxiv txog kev cuam tshuam ntawm qhov muag pom, tshwj xeeb tshaj yog nyob ib puag ncig cov tsev.
4. Rau Cov Khoom thiab Cov Lus Qhia Ntxiv: Macro Prime
Yog tias koj xav thaij duab cov khoom, khoom noj, lossis cov ntsiab lus me me, lub lens macro prime yog qhov kev xaiv zoo tshaj plaws. Cov lens macro muaj qhov loj me siab nrog qhov ntse tshwj xeeb, ua rau lawv zoo tagnrho rau kev siv ua lag luam.
Cov Lus Qhia rau "Chav Kawm" Zoo Tshaj Plaws ntawm Cov Lens Ruaj Khoov
Es tsis txhob hais cov npe tshwj xeeb, ntawm no yog cov lus piav qhia txog cov iav zoo tshaj plaws uas feem ntau muaj nyob rau ntawm ntau lub koob yees duab (Canon, Nikon, Sony, Fujifilm, thiab lwm yam). Koj tuaj yeem kho qhov version ntawm lub mount kom haum rau koj lub koob yees duab.
1. 50mm f/1.8: Qhov Zoo Tshaj Plaws Rau Cov Neeg Pib Tshiab
Yog tias koj nyuam qhuav pib siv, 50mm f/1.8 feem ntau yog thawj qhov kev xaiv vim tias:
- tus nqi pheej yig dua,
- ntse,
- zoo nkauj bokeh,
- zoo heev rau kev kawm duab thiab lub teeb qis.
Qhov no yog lub lens "yuav tsum muaj" rau ntau tus kws thaij duab, vim nws tus nqi siab heev.
2. 35mm f/1.8 los yog f/1.4: Siv tau ntau yam rau txhua qhov xwm txheej
35mm lens yog tsim rau:
– txoj kev,
- kev mus ncig,
– daim duab tsev neeg,
- cov ntaub ntawv qhia txog kev tshwm sim.
Lub f/1.8 version feem ntau yog sib dua thiab pheej yig dua, thaum lub f/1.4 muab cov bokeh creamier thiab kev ua haujlwm zoo dua hauv qhov kaj tsawg.
3. 85mm f/1.8: Duab Thaij Duab Zoo Tshaj Plaws Nrog Tus Nqi Tsim Nyog
Rau cov duab loj loj, lub 85mm f/1.8 yog qhov chaw zoo tshaj plaws. Lub bokeh du thiab zoo nkauj, cov duab zoo li "pop," thiab qhov ntse feem ntau zoo heev. Nws haum rau cov duab ua ntej tshoob, cov duab thaij taub hau, thiab txawm tias zam.
4. 24mm lossis 20mm Prime: Ntse rau Toj roob hauv pes thiab Cov Ntsiab Lus Muaj Tswv Yim
Cov tsom iav dav dav feem ntau yog cov neeg thaij duab toj roob hauv pes xaiv vim lawv muaj cov ntsiab lus zoo, tshwj xeeb tshaj yog thaum siv ntawm qhov apertures ntawm f/5.6–f/11. Rau cov neeg thaij video, cov tsom iav dav dav kuj zoo tagnrho rau qhov chaw nqaim thiab cov duab zoo nkauj.
5. Lub Lens Loj Kawg Nkaus (f/1.2 lossis f/1.4): Rau Tus Neeg thiab Kev Ua Yeeb Yam
Yog tias koj tab tom nrhiav tus cwj pwm duab "wow" ntau dua, cov iav nrog qhov qhib loj xws li f / 1.2 lossis f / 1.4 feem ntau muab:
- kev sib cais ntawm cov ntsiab lus yog muaj zog heev,
– bokeh tuab dua,
- kev ua tau zoo dua thaum tsis muaj teeb pom kev zoo.
Txawm li cas los xij, cov iav no feem ntau kim dua thiab hnyav dua. Tsis tas li ntawd, qhov tob ntawm daim teb uas tsis tob heev yuav tsum tau tsom kom raug dua.
Cov Lus Qhia rau Kev Siv Lub Lens Kho Kom Tau Txais Txiaj Ntsig Zoo Tshaj Plaws
1. Qhia ob txhais ceg, tsis yog kom zoom. Xyaum txav kom nrhiav tau lub kaum sab xis zoo tshaj plaws.
2. Siv lub qhov (aperture) uas koj xav tau. Lub qhov (aperture) dav dav yog qhov zoo, tab sis yog xav kom pom tseeb tag nrho, sim f/2.8–f/5.6.
3. Ua tib zoo saib qhov deb tsawg kawg nkaus uas yuav tsum tsom mus rau. Qee lub lens prime tsis tuaj yeem tsom mus ze heev, yog li ntawd kho qhov no yog tias koj nquag thaij duab ntau yam.
4. Siv lub teeb ntuj tsim kom zoo. Lub lens prime muaj zog heev rau kev ua kom lub teeb ntawm qhov rais ci ntsa iab tshaj plaws, lub sijhawm kub, thiab cov xwm txheej uas tsis muaj teeb ci ntau yam yam tsis muaj lub teeb ci.
5. Xav txog kev ruaj khov. Yog tias koj lub koob yees duab lossis lub lens muaj kev ruaj khov, cov duab thaum tsaus ntuj yuav muaj kev nyab xeeb dua los tiv thaiv kev tsis meej pem.
Kev kaw
Lub lens prime zoo tshaj plaws rau lub koob yees duab digital tsis yog hais txog hom lossis tus nqi xwb; nws yog hais txog kev sib phim qhov ntev focal thiab cov yam ntxwv rau koj cov kev xav tau. Rau cov neeg pib tshiab, 50mm f/1.8 yog qhov pib zoo heev. Rau kev thaij duab ntawm txoj kev thiab cov ntaub ntawv, 35mm yog qhov kev xaiv yooj yim tshaj plaws. Rau cov duab portraits, 85mm muab cov txiaj ntsig zoo nkauj thiab kev tshaj lij. Rau cov toj roob hauv pes thiab architecture, lub lens prime dav dav xws li 24mm lossis 20mm muab qhov ntse thiab cov ntsiab lus zoo heev.
Yog tias koj xav kom koj cov duab zoo dua yam tsis tas yuav hloov koj lub cev lub koob yees duab, kev nqis peev rau lub lens prime zoo yog ib qho kev txiav txim siab zoo tshaj plaws uas koj tuaj yeem ua tau. Nrog lub lens prime uas haum rau koj tus qauv, koj tuaj yeem tsim cov duab ntse dua, bokeh zoo nkauj dua, thiab zaj dab neeg pom tseeb dua.
Yog tias koj xav tau, thov qhia koj lub koob yees duab hom (Canon/Nikon/Sony/Fuji/thiab lwm yam) thiab hom sensor (APS-C lossis full-frame), ces kuv tuaj yeem pom zoo cov kev xaiv prime lens zoo tshaj plaws uas haum rau koj lub koob yees duab.
