Lenzi yeTerefoto yeKamera yeDigital
Munyika yekutora mifananidzo yedhijitari, lenzi ndiyo "ziso" rinosarudza kuti nguva inotorwa sei. Pakati pemhando dzakasiyana dzemalenzi, malenzi efoni ane nzvimbo yakakosha nekuda kwekugona kwawo kuswededza vanhu vari kure pedyo, kukudza ruzivo, uye kugadzira hunhu hwakasiyana hwekuona. Kune vazhinji vanotora mifananidzo—vanotanga nenyanzvi—malenzi efoni ndiyo sarudzo huru yekutora mifananidzo yemitambo, mhuka dzesango, makonzati, uye kunyange mifananidzo ine mamiriro akapfava. Chinyorwa chino chinokurukura kuti lenzi yefoni chii, mashandiro ayo, zvakanakira nezvayakaipira, uye mazano ekusarudza nekushandisa imwe iri pakamera yedhijitari.
Chii chinonzi Telephoto Lens?
Lenzi ye telephoto i lenzi ine urefu hwakareba hwe focal pane lenzi yakajairwa. Kazhinji, pakamera yakazara furemu, ma lenzi e telephoto anowanzo tanga ari pa 70mm zvichikwira. Pakamera yeAPS-C, nekuda kwe crop factor (semuenzaniso, 1,5x kana 1,6x), kunyange lenzi ye 50mm inogona kunzwa se "telephoto" kupfuura lenzi yakazara furemu, asi chikamu che telephoto chinowanzo reva huwandu hwe 55–200mm (mid-telephoto) kusvika 300mm zvichikwira (super telephoto).
Kureba kwefocal kureba kunoita kuti pave nekona yakamanikana yekuona. Kona yakamanikana iyi inoita kuti chinhu chionekwe sechakakura mufuremu, sekunge uri "kuswedera pedyo" usina kuswedera pedyo nemuviri.
Mashandiro EmaLense eTelephoto uye Maitiro Avo Ekuona
Telephoto haisi yekungo "zoom in" chete. Kune zvinhu zvinoonekwa zvinowanzofarirwa nevatori vemifananidzo nezvazvo:
1. Kudzvinyirirwa kwemaonero
Magirazi eTelephoto anowanzoita kuti daro riri pakati pezvinhu zviri pamberi nezviri kumashure riite seripfupi. Nekuda kweizvozvo, kumashure kunoita se "pedyo" uye kazhinji kunoita sekuri kure. Izvi zvinonyanya kukwezva mumifananidzo yenzvimbo ine makomo, kana kuti maguta ane zvivakwa zvakataramukana.
2. Kuzviparadzanisa nevamwe
Nekuda kwekona yayo yakamanikana uye inowanzo shandiswa uri kure, telephoto inoita kuti zvive nyore kuti mutori wemifananidzo aparadzanise nyaya yacho neyakaipoteredza. Nyaya yacho inonyanya kutaurwa nezvayo, uye zvinokanganisa zviri nyore kudzivirira.
3. Bokeh yakasimba
Nekuvhura kwakakura (semuenzaniso, f/2.8 kana f/4) uye kureba kwenguva refu, kumashure kunogona kusviba zviri nyore. Mhedzisiro iyi inowanzo shandiswa mumifananidzo, mafashoni, kana mimwe mifananidzo yechigadzirwa uko kunonyanya kutariswa pane chinhu chacho.
Mhando dzeTelephoto Lenses
Muchidimbu, telephoto inogona kukamurwa kuita mapoka akati wandei:
– Telephoto iri pakati nepakati (inenge 70–200mm)
Iyi mhando yakakurumbira nekuda kwekushanda kwayo kwakasiyana-siyana: yakakodzera mifananidzo, zviitiko, mapikicha akajeka, uye kunyange mitambo yakapfava. Lenzi ye70–200mm f/2.8 inowanzonzi "basa" remutori wemifananidzo wehunyanzvi.
– Telephoto refu (inenge 100–400mm)
Zvakakodzera mhuka dzesango, mitambo yekunze, kana mitambo yekumhanya-mhanya kure, malenzi ari mumhando iyi anowanzo kuwanikwa mumhando dze100–400mm kana 150–600mm.
– Super telephoto (400mm zvichikwira)
Magirazi aya anoshandiswa pakutasva shiri, pakufamba nendege, pamitambo yehunyanzvi, uye pakutora mifananidzo iri kure, anowanzova makuru, anorema, uye anodhura, asi anopa mhedzisiro yakaoma kukunda.
Kunze kwefocal length, telephoto lenses dzinogonawo kupatsanurwa se prime (fixed focus, semuenzaniso, 135mm, 200mm, 300mm) uye zoom (semuenzaniso, 70–200mm, 100–400mm). Prime lenses dzinowanzo kupa malenzi akapinza uye ma aperture akakura, nepo zoom lenses dzichigona kuchinjika.
Mabhenefiti eTelephoto Lenses
1. Kusvika kune vanhu vari kure
Iyi ndiyo mukana uri pachena. Unogona kutora mifananidzo yevatambi vari munhandare, shiri dzakareba, kana kuti vaimbi vari pachikuva pasina kufanira kuva pedyo.
2. Ita kuti mapikicha emifananidzo anyanye kufadza
Magirazi epakati nepakati efoni akadai se85mm, 105mm, kana 135mm anowanzo shandiswa pamifananidzo nekuti anoderedza kukanganiswa kwechiso kunowanzoonekwa nemagirazi ane angle yakafara. Mhino hadziratidzike se "dzakakura," uye huwandu hwechiso hunoita sehwechisikigo.
3. Zvinoita kuti kuumbwa kuve nyore
Nekuona kwakamanikana, unogona "kubvisa" zvinhu zvinokanganisa pfungwa. Vatori vemifananidzo vemumigwagwa nevemafirimu vanowanzo shandisa telephoto kutora mifananidzo yakasununguka vari kure.
4. Inobatsira kugadzira background yakapfava
Nekusanganiswa kwehurefu hwakareba hwefocal uye aperture yakafara, mhedzisiro yekublur yekumashure (bokeh) inogona kuva runako rukuru runoita kuti mapikicha ataridzike seehunyanzvi.
Matambudziko Nekushaikwa kweTelephoto
1. Kuzunguza kamera kunonyanya kuoneka
Kana kureba kwefocal kuri kure, mikana yekuti mifananidzo irege kujeka nekuda kwekukwazisana nemaoko inowedzera. Saka, makamera e telephoto anowanzo da kumhanya kwakanyanya kwe shutter, stabilization (OIS/IS/VR), kana tripod/monopod.
2. Saizi nehuremu
Magirazi eTelephoto, kunyanya ane maburi makuru, anowanzova makuru uye anorema. Izvi zvinokanganisa kugadzikana, kufamba, uye kudiwa kwebhegi rekamera.
3. Mitengo yakakwira
Magirazi emhando yepamusoro e telephoto — kunyanya f/2.8 kana super telephoto — anowanzo kudhura nekuda kwemagadzirirwo akaomarara emaziso uye kushandiswa kwezvinhu zvakakosha.
4. Zvinodiwa zvikuru zvechiedza
Magirazi mazhinji efoni anoshandiswa nevatengi ane maburi akasiyana-siyana akadai se f/4.5–6.3. Mumamiriro ezvinhu asina chiedza chakawanda, unogona kumanikidzwa kuwedzera ISO kana kuderedza kumhanya kweshutter, izvo zvinowedzera njodzi yeruzha kana kusviba.
Mazano ekusarudza Telephoto Lens yeDigital Camera
1. Gadzirisa zvinoenderana nezvaunoda pakupfura
– Mifananidzo nezviitiko: 70–200mm kana 85–135mm prime.
– Mitambo yekunze: 100–400mm kana 70–200mm ine muviri wakachekwa.
– Kufamba neshiri dzemusango: 300mm zvichikwira, zvakanaka 400–600mm.
2. Funga nezve sensor yekamera (full-frame vs APS-C/MFT)
Chinhu chinobvisa zvidimbu chinoita kuti lenzi inzwe yakareba. Lenzi ye200mm pa1,5x APS-C inonzwa selenzi ye300mm pafuremu yakazara.
3. Kugadzirisa mufananidzo kunobatsira zvikuru
Kana uchigara uchitora mifananidzo neruoko, sarudza lenzi ine optical stabilization. Izvi hazvitsivi kumhanya kwakanyanya kwe shutter kune vanhu vanofamba, asi zvinobatsira zvikuru kune vanhu vasina kusimba.
4. Kuvhura kwelenzi: f/2.8, f/4, kana f/5.6?
– f/2.8 inobudirira zvikuru kana chiedza chiri pasi uye kana iine bokeh, asi inorema uye inodhura.
– f/4 yakareruka uye inowanzo ramba yakapinza.
– f/5.6–6.3 inodhura zvishoma, yakakodzera kushandiswa panze.
5. Tarisa kupinza uye mashandiro e autofocus
Magirazi eTelephoto anowanzo shandiswa kuita zvinhu nekukurumidza. Kutarisa otomatiki uye kupindura kwakarurama kwakakosha, kunyanya kumitambo nemhuka dzesango.
Maitiro Ekushandisa Telephoto Kuti Uwane Mhedzisiro Yakanyanya
- Shandisa kumhanya kwakachengeteka kwekuvhara
Mutemo mukuru: 1/(focal length) sekondi kudzivirira kusviba (semuenzaniso 1/200 ye 200mm). Pamakamera ane resolution yepamusoro kana asina stabilization, inowanzo fanirwa kukurumidza.
- Shandisa mukana we burst mode uye AF tracking
Kune vanhu vanofamba, shandisai autofocus inoenderera mberi uye burst shooting kuti muwedzere mikana yenyu yekuwana nguva yakapinza.
- Tarisa kureba kwenzvimbo uye mafambiro ekufamba
Telephoto inokutendera kuti utore mifananidzo uri kure, asi ramba uchiteerera nzvimbo yekuumbwa kwayo kuitira kuti chinhu chacho chisachekerwe uye kumashure kusakanganise.
- Shandisa monopod kana tripod kana zvichidikanwa
Kune magirazi anorema kana maburi marefu, monopod inobatsira zvikuru mukuchengetedza kugadzikana pasina kuderedza zvachose kufamba.
Penutup
Lenzi ye telephoto inokosha kune vanotora mifananidzo vanoda kutora mifananidzo iri kure uye kugadzira simba guru rekuona—kungave kuburikidza nekudzvanya maonero, kupatsanura nyaya, kana kutora bokeh inokwezva. Kunyange zvazvo ichiuya nematambudziko akadai sekudiwa kwekugadzikana, huremu, uye mutengo, zvakanakira zvacho zvinowanzo shanda, kunyanya kumitambo, mhuka dzesango, chikuva, uye mifananidzo. Nekunzwisisa hunhu hwe lenzi ye telephoto uye kusarudza urefu hwakakodzera hwe focal uye aperture, unogona kuwedzera kugona kwekamera yako yedhijitari kugadzira mifananidzo yakajeka, inoshamisa, uye yakadzama.
