Pofuna kuwonetsetsa kuti mandala atha kupereka zithunzi zapamwamba komanso magwiridwe antchito odalirika pamawonekedwe ena ogwiritsira ntchito, ndikofunikira kuchita zowunikira zoyenera pagalasi. Ndiye, njira zowunikira ndi zitimakina owonera magalasi? M'nkhaniyi, tiphunzira momwe tingawunikire magalasi owonera makina.
Momwe mungawunikire magalasi owonera makina
Kodi njira zowunikira ma lens owonera makina ndi ziti?
Kuunikira kwa magalasi owonera makina kumafunika kuganizira mbali zambiri za magawo ndi mawonekedwe a magwiridwe antchito, ndipo kuyenera kuchitidwa mothandizidwa ndi zida zapadera ndi akatswiri kuti awonetsetse kuti zotsatira zowunika ndi zolondola komanso zothandiza.
Zotsatirazi ndi njira zazikulu zowunikira:
1.Kuyesa kwazithunzi
Mawonekedwe a lens amatsimikizira kukula kwa malo omwe makina owonera amatha kuwona, ndipo nthawi zambiri amatha kuwunikidwa poyesa kukula kwa chithunzi chopangidwa ndi mandala pautali wokhazikika.
2.Kusokoneza mayeso
Kusokoneza kumatanthauza kupunduka komwe kumachitika pamene lens imapanga chinthu chenicheni pa ndege yojambula. Pali mitundu iwiri ikuluikulu: kupotoza kwa mbiya ndi kupindika kwa pincushion.
Kuwunika kutha kuchitidwa pojambula zithunzi zofananira kenako ndikuwongolera ma geometric ndi kusanthula kosokoneza. Mutha kugwiritsanso ntchito khadi yoyeserera yokhazikika, monga khadi yoyeserera yokhala ndi gridi yokhazikika, kuti muwone ngati mizere ya m'mphepete ndi yopindika.
3.Mayeso otsimikiza
Kusintha kwa lens kumatsimikizira tsatanetsatane wa chithunzicho. Chifukwa chake, kukonza ndiye gawo lofunikira kwambiri loyesa la lens. Nthawi zambiri imayesedwa pogwiritsa ntchito khadi yoyeserera yokhazikika yokhala ndi pulogalamu yowunikira yofananira. Nthawi zambiri, kusintha kwa mandala kumakhudzidwa ndi zinthu monga kukula kwa kabowo ndi kutalika kwapakati.
Kusintha kwa magalasi kumakhudzidwa ndi zinthu zambiri
4.Bkuyesa kwa kutalika kwa ack
Kutalika koyang'ana kumbuyo ndi mtunda kuchokera pa chithunzi kupita kuseri kwa mandala. Pa lens yokhazikika yautali wokhazikika, utali wolunjika wakumbuyo umakhala wokhazikika, pomwe lens ya zoom, utali wokhazikika wakumbuyo umasintha momwe utali wolunjika ukusintha.
5.Sensitivity test
Sensitivity ikhoza kuyesedwa poyesa chizindikiro chachikulu chomwe lens imatha kutulutsa pansi pa kuyatsa kwapadera.
6.Chromatic aberration test
Chromatic aberration imatanthawuza vuto lomwe limadza chifukwa cha kusagwirizana kwa malo omwe amawunikira amitundu yosiyanasiyana ya kuwala pomwe mandala apanga chithunzi. Chromatic aberration ikhoza kuyesedwa powona ngati m'mphepete mwazithunzi pachithunzichi ndi zomveka bwino, kapena pogwiritsa ntchito tchati chapadera choyesera mitundu.
7.Kusiyanitsa kuyesa
Kusiyanitsa ndiko kusiyana kwa kuwala pakati pa malo owala kwambiri ndi akuda kwambiri pa chithunzi chopangidwa ndi lens. Ikhoza kuyesedwa poyerekezera chigamba choyera ndi chigamba chakuda kapena pogwiritsa ntchito tchati chapadera choyesera (monga tchati cha Stupel).
Kusiyanitsa kuyesa
8.Vignetting mayeso
Vignetting ndi chodabwitsa kuti kuwala kwa m'mphepete mwa chithunzi kumakhala kotsika kuposa komwe kuli pakati chifukwa cha kuchepa kwa kapangidwe ka mandala. Mayeso a vignetting nthawi zambiri amayezedwa pogwiritsa ntchito mawonekedwe oyera oyera kuti afananize kusiyana kowala pakati papakati ndi m'mphepete mwa chithunzi.
9.Anti-Fresnel reflection test
Fresnel reflection imatanthawuza zochitika za kuwunikira pang'ono kwa kuwala pamene ikufalikira pakati pa zofalitsa zosiyanasiyana. Nthawi zambiri, gwero lowunikira limagwiritsidwa ntchito kuunikira disololo ndikuyang'ana kuwonetserako kuti aunikire mphamvu yotsutsa kuwunikira kwa disololo.
10.Mayeso a transmittance
Ma transmittance, ndiye kuti, ma transmittance a lens kupita ku fluorescence, amatha kuyeza pogwiritsa ntchito zida monga spectrophotometer.
Malingaliro Omaliza:
ChuangAn wachita mapangidwe oyambirira ndi kupangamakina owonera magalasi, zomwe zimagwiritsidwa ntchito pazinthu zonse zamakina owonera makina. Ngati mukufuna kapena muli ndi zosowa zamagalasi owonera makina, chonde titumizireni posachedwa.
Nthawi yotumiza: Sep-10-2024
