Optical Zoom Vs. Digital Zoom
Vagadziri vanoda kuedza kuita zvinhu zviri nyore kwauri apo uri kutengesa kamera yemamera , zvikurukuru nekusimbisa zvimwe zviyero zvevatori vadzo, zvakadai semari mikuru ye megapixel uye mashizha makuru eCD screen.
Zvisinei, nhamba dzakadaro hadzisi nguva dzose dzichitaura nyaya yose, kunyanya pachitarisa zverikisi lenzi pane kamera ye digital. Vanogadzira chiyero chekutsvaga maikirwo emakamera echidimbu mumagadziriro maviri: Svondo rekushinga vs. zoom zoom. Zvakakosha kunzwisisa lens zoom, nokuti mapoka maviri e zoom akasiyana zvakasiyana kubva kune mumwe. Muhondo ye optical zoom vs. digital zoom, chete chete - optical zoom - inobatsira nguva dzose kune vateereri.
Neine makamera akawanda e digital, zoom lens inofamba panze kana iri kushandiswa, ichiwedzera kubva mumuviri wekhamera. Dzimwe kamera dzedhijita, zvisinei, dzinoita kuti ziso racho rigadziridzwe pachinenge ichigadzirisa lens iri mukati memuviri wemakamera . Ramba uchiverenga kuti uwane mamwe mashoko anogona kukubatsira kunzwisisa kameri zoom lenzi zviri nani uye iyo inogona kukubatsira iwe kugumisa kupikisana kwemaziso optical vs. zoom zoom!
Optical Zoom
Kuyera kwemaziso kunobatsira kuwedzera chaiyo murefu wepamusoro we lens. Focal urefu ndiyo nzvimbo iri pakati pepakati pe lens uye sensor image. Nokufambisa lens iri kure nechitarisiko chemukati mukati memuviri wekhamera, kuvhenekera kunowedzera nokuti chikamu chiduku chechiitiko chinokonzera chiso chechifananidzo, zvichiita kuti kukudzwa.
Paunenge uchishandisa zoom optical, mamwe kamera dzedhizha dzichava nekutsvaira kwakanyatsojeka, zvichireva kuti unogona kumira chero ipi zvayo kumativi ose ekureba kwezveruzhinji rwekuzorora. Mamwe makamera ejeri achashandisa zvimiso zvakasiyana-siyana pamwe nekureba kwekuzorora, kazhinji kukugadzirisa kusvika pakati pechina nechinomwe chinzvimbo chekutsvaira nzvimbo.
Digital Zoom
Iko digital zoom zoom pa digital kamera, kuisa pachena, haina zvazvinobatsira pasi pemamiriro ekupfura akawanda. Kudhindwa kweDhijito is a teknolojia iyo kamera inotsvaga mufananidzo ndokuzobereka uye inoikudziridza kuti igadzire mufananidzo wakavhara. Izvi zvinoda kukudza kana kubvisa mapiksesi ega ega, izvo zvinogona kukonzera kukura kwekufananidzira kwemufananidzo.
Nguva yakawanda iwe unogona kuita mabasa akaenzana nekodzero yekudhijita nemufananidzo-kugadzira software pakombiyuta yako mushure mokupfura mufananidzo. Kana iwe usina nguva yekutora shanduro yepurogiramu, unogona kushandisa dhijita ye digital kuti ipfure pane zvakasarudzwa uye wobva waita kuti upiwe mavhesikisi uye kubvisa mapikisi uye kuisa chinyorwa ichi kuchisarudzo chakadzika chinosangana nekudhinda kwako zvinoda. Zviri pachena, kukosha kwekutsvaira kwemajeri kunogumira kune mamwe mamiriro ezvinhu.
Kunzwisisa Chiyero Chekuita
Kana uchitarisa zvinyorwa zvekamera yemadhijita, zvose zviyero zve-optical uye digital zvinowanikwa sehamba uye "X," yakafanana ne3X kana 10X. Nhamba huru inomirira simba rakakura kukura.
Ramba uchitarira kuti haisi mamiriyoni ose e "10X" optical zoom measure zvakafanana. Vagadziri vanoyera kutarisa kwema optical kubva kune imwe yakanyanya ye lens 'kukwanisa kune imwe. Mune mamwe mazwi, "multiplier" ndiwo musiyano pakati pediki kudarika uye hukuru hukuru hwemakiromita ekuyera kwe lens. Somuenzaniso, kana 10X optical zoom lens pane imwe kamera yemamera ine zvishoma zvishoma zvakasvika 35mm, iyo kamera inogona kuva ne 350mm yakakwirira yepamusoro. Zvisinei, kana kamera yemagetsi ichipa mamwe mazamu akawandisa-ezvo uye ane madiki 28mm yakafanana, ipapo tsvina ye 10X ichange iine hurefu hwakanyanya hwema 280mm.
Nzvimbo yakatarisa inofanira kuiswa pane zvinyorwa zvekamera, kazhinji mumutauro wakafanana ne "35mm film yakaenzana: 28mm-280mm." Muzviitiko zvakawanda, 50mm lens muyero inofungidzirwa se "inowanzo," isina kukudzwa uye isina yakareba-angle Unogona kuenzanisa nharaunda yakasiyana-siyana yeimwe lens, zvinokosha kuti uenzanise nhamba yemafirimu 35mm yakaenzana kubva pane lens kusvika kune lens. zvinogona kunge zvichinyanyisa kana iwe usina kutarisa nhamba yakarurama.
Inoshandiswa Lens
Dhidhijeri makamera anotarirwa nevatangi uye vashandisi vari pakati vanongopa chete lens yakavakwa. Nyaya dzakawanda dze digrijiti SLR (DSLR) makamera, zvisinei, dzinogona kushandisa lenzi dzingapindurirwa. Ne DSLR, kana lenzi yako yekutanga isina nzvimbo yakareba-yega kana kuti yezvidzidzo zvaunoda, unogona kutenga lenzi dzakawedzerwa dzinopa zveruzhinji kana kuti zviri nani zvakakosha-sarudzo.
Makamera eDLRLR anonyanya kudhura kudarika nheti-uye-kutema mhando, uye kazhinji zvinotarisirwa pakati pepakati pepamusoro kana vatambi vanofambira mberi.
Zvose zve DSLR lenzi hazvizobatanidza nhamba ye "X" yekuenzanisira. Pane kudaro, nzvimbo yakatarisa ichaongororwa chete, kazhinji sechikamu chezita rejeri re DSLR. DIL (kamera yakashandura inogadziridza digital) makamera, ayo anonzi mirroras (LC) anogadziriswa asingagoni kugadziriswa (ILC), anoshandisawo lenzi yakanyorwa nehukuru hwayo, panzvimbo pekutsvaira X nhamba.
Nechinhu chinogona kutenderedzwa kemera kamera, unogona kuverenga optical zoom measure iwe pachako uchishandisa mashematical formula. Tora hurefu hukuru hukuru hwekuti lens inogona kushandurudzwa inogona kusvika, ichiti 300mm, uye igovane nehuwandu hukuru hwemarefu, ichiti 50mm. Mumuenzaniso uyu, iyo yakaenzana yakakosha yekuyera inenge iri 6X.
Zvimwe Zoom Lens Drawbacks
Kunyange zvazvo sarudza kamera-uye-kupfura kamera ine lindo huru ye-optical zoom iyo inofadza kune vakawanda vanoita mifananidzo, dzimwe nguva inopa zvishoma zviduku zviduku.
- Mhere. Mamwe makamera anotanga, asingadhuri anoshamiswa nemufananidzo wepamusoro pamusana pemheremhere apo lens rinotambanudzirwa kusvika pakukwirira kwepamusoro. Dhidhijeri kamera ruzha isheti yemapikseli asina kukwana asinganyora zvakanaka, kazhinji achioneka semipendero yepepuru mune mufananidzo.
- Pincushioning. Kukura kwepamusoro kune dzimwe nguva kunokonzera pincushioning, iyo inopesana apo mhedziso yakasara uye yakarurama yemufananidzo inooneka yakatambanudzwa. Mitsara yakasvibiswa inooneka yakapeteredzwa nechepakati nepakati peforamu. Zvakare, dambudziko iri rinowanzosvika kumatangi-anotanga, mashizha makamera ane huru zoom lenses.
- Slower shutter response time. Paunenge uchishandisa kukura kwepamusoro kwekuzorora, nguva yekupfigira inopinda dzimwe nguva inononoka, iyo inogona kukonzera kusvibisa mifananidzo. Iwewo unogona kukanganisa chinyamupinyi chinyararire pamusana pemhinduro shoma yekuvhara . Zvinongotora iyo digital kamera kwenguva yakareba kuti iongorore pane chifananidzo pamusasa wekutsvaga kwekutsvaga, iyo inotsanangura nguva shoma yekuvhara mhinduro. Matambudziko akadaro anokurudzirwa kana kupfura pahukuru hwekutsvaga muzasi .
- Inoda katatu. Kushandisa kureba kwema-lens kunogona kukonzera kuwedzera kamera kuzunungusa. Dzimwe kamera dzedhijita dzinogona kugadzirisa dambudziko iri kuburikidza nechimiro chekusimudzira . Iwewo unogona kushandisa katatu kuti udzivirire mafungiro emifananidzo kubva pakamera kushamwaridzana.
Usakanganiswa
Panosimbisa zvinotsanangurwa zvezvigadzirwa zvavo, vamwe vanogadzirisa vanozobatanidza kuvhenekera kwedijitori uye maziso okuzorora, zvichivabvumira kuratidzira huru yakawanda yekubatanidza nhamba pamberi pebhokisi.
Iwe, zvisinei, unofanirwa kutarisa chete nhamba yekutsvaira, iyo inogona kuiswa pakona seri kwebhokisi, pamwe chete nehuwandu hwehumwe huwandu hunotsanangurwa. Iwe unogona kunge uchiita zvishoma kutsvaga kuti uwane optical zoom measure yeimwe muenzaniso.
Mune nyaya ye digital digital zoom lens, inobhadhara kuverenga zvakanyora zvinyorwa. Kunzwisisa lens zoom, uye iwe uchanyanya kushandisa yako digital kamera kutenga.