Shandura 35mm marefu ekureba kusvika kune APS-C digital makamera
Mamwe makamera edijita anodiwa kuti awedzere kuwedzera huwandu kuitira kuti ave nechokwadi kuti mufananidzo ari kuwana maonero ekuona ivo vari kutarisira. Izvi chete zvakava chiitiko apo kupikisa kwakashandurwa kubva pane firimu kusvika kudijita, uye kuchinja kwakagadzirwa kune makamera akawanda eDLRLR akabatana nehupamhi hwehutano hwemazuva ose.
Paunenge uchibatanidza kamera yedijiti neine lens, zvinokosha kuziva kuti kana kuti kwete kuwedzera kwekureba kwenguva yakareba kunofungidzirwa-kunogona kuchinja zvakanyanya lensi yaunotenga nokuti unogona kutenga lensi isingasviki zvaunoda.
Chii Chinonzi Focal Length Chinowedzera?
Makamera akawanda eDLRLR ari APS-C, anonziwo chimiro chemamera makamera . Izvi zvinoreva kuti vane sensiti duku (15mm x 22.5mm) kupfuura nzvimbo ye 35mm film (36mm x 24mm). Iyi misiyano inotanga kuitika kana tichitaura nezvehukuru hwema lenses .
Ima 35mm film format yakashandiswa kwenguva yakareba seyeri mukutora mapikicha kuti ione urefu hwemakirosi ayo vazhinji vevatori vemifananidzo vanojaira. Semuenzaniso, 50 mm inonzi inofanirwa, 24mm yakafara-angle, uye 200mm ndiyo telephoto.
Sezvo APS-C kamera ine chinyorwa chiduku chechifananidzo, urefu hwemakiromendi aya hunofanira kuchinjwa uchishandisa muwandu hwekuwedzera.
Kuverenga Focal Length Magnifier
Iyo yakanyanya kuwedzera yakawanda inowanzosiyana pakati pevakugadziri. Izvi zvinogona kusiyana nemuviri wemikirwo zvakare, kunyange zvazvo vakawanda vanogadzira seCanon vanoda kuti iwe uwedzere urefu hwemisosi yerima ne x1.6. Nikon naFiji vanowanzoshandisa x1.5 uye Olympus anoshandisa x2.
Izvi zvinoreva kuti chifananidzo chichatora firamu inowanikwa ka1994 zvishoma kudarika iyo inogona kutorwa ne 35mm film.
Iyo yakanyanya kuwedzera yakawanda haina simba kune hukuru hwemakirosi anoshandiswa ne-full-frame DSLR nokuti makamera aya anoshandisa fomu imwechete se 35mm film.
Zvose izvi hazvireve kuti iwe uri kuwedzera chizere chema lens nekwakakura kwekuratidza urefu; zvirokwazvo, iyo equation inotarisa chimwe chinhu chakadai:
Rakagadzikana Purogiramu Focal Length ÷ Focal Length Magnifier = APS-C Focal Length
Munyaya yeCanon APS-C ne x1.6 inotaridzika seyiyi:
50mm ÷ 1.6 = 31.25mm
Zvimwe, kana iwe uri kuisa APS-C lens pamusana wekamera yemuviri wemukati (kwete kutaurirwa nokuti uchawana vignetting ), iwe unowedzera lens nekumusoro kwekusimudzira urefu. Izvi zvichakupa yako yakazara-frame frame focal urefu.
Funga Maonero Emangwanani
Icho chinowedzera pamusoro pechiratidzo chemaonero maererano nehupamhi hwekutapisa kupfuura huri chaihwo hukuru hwema lens, uye kuti 50mm lens iri chaizvo yakareba angle lens pane APS-C.
Ichi ndicho chikamu chakaoma kune vatevedzeri vave vave vachishandisa mafirimu 35mm kwemakore uye zvinotora nguva yekuputira pfungwa dzenyu pamusoro penzira iyi itsva yekufunga. Zvitarisire iwe nekona yemafungiro emwenje panzvimbo yehupamhi.
Heano mamwe emamwe masero ekuda kwekuona nekutendeuka:
| Angle View (degrees) | 35mm 'Full-Frame' | Canon x1.6 APS-C 'Crop' | Nikon x1.5 APS-C 'Crop' | |
|---|---|---|---|---|
| Super Telephoto | 2.1 | 600mm | 375mm | 400mm |
| Long Telephoto | 4.3 | 300mm | 187.5mm | 200mm |
| Telephoto | 9.5 | 135mm | 84.3mm | 90mm |
| Kazhinji | 39.6 | 50mm | 31.3mm | 33.3mm |
| Kazhinji-Wide | 54.4 | 35mm | 21.8mm | 23.3mm |
| Wide | 65.5 | 28mm | 17.5mm | 18.7mm |
| Very Wide | 73.7 | 24mm | 15mm | 16mm |
| Super Wide | 84 | 20mm | 12.5mm | 13.3mm |
| Ultra Wide | 96.7 | 16mm | 10mm | 10.7mm |
The Digital Lens Fix
Kuti udzivise dambudziko iri, vazhinji vanogadzira makamera zvino vanobudisa "ma digital" lens, izvo zvinoshanda chete nemakhamera APS-C.
Aya majekisi achiri kutarisa nguva yakareba, uye anoramba achida kuwedzera kuwedzerwa kunoshandiswa kwavari, asi zvakagadzirirwa kungovhara nzvimbo ye sensor inoshandiswa nezvirimwa makamera makamera.
Inowanzova yakawanda inobwinya uye yakawanda kupfuura yakashambadza kamera lenzi.