Mukutora mifananidzo ne optics, firita ye neutral density kana ND firita inoderedza kana kugadzirisa kusimba kwema wavelength ese kana mavara echiedza zvakaenzana pasina kuchinja ruvara rwekubereka kwemavara. Chinangwa chemafirita e neutral density ekutora mifananidzo ndechekuderedza huwandu hwechiedza chinopinda mu lenzi. Kuita izvi kunobvumira mutori wemifananidzo kusarudza musanganiswa we aperture, nguva yekuratidzwa, uye sensor sensitivity iyo yaizoburitsa mufananidzo wakawandisa. Izvi zvinoitirwa kuwana mhedzisiro yakaita sekudzika kwemunda kana kufamba kwezvinhu mumamiriro akasiyana-siyana uye mamiriro ekunze.
Semuenzaniso, munhu angada kutora mapopoma emvura nekumhanya kushoma kweshutter kuti agadzire mhedzisiro yekublur yekufamba nemaune. Mutori wemifananidzo anogona kuona kuti kumhanya kweshutter kwemasekonzi gumi kunodiwa kuti awane mhedzisiro yaunoda. Pazuva rakajeka zvikuru, panogona kuva nechiedza chakawandisa, uye kunyangwe pakumhanya kwefirimu kwakaderera uye aperture diki, kumhanya kweshutter kwemasekonzi gumi kunobvumira chiedza chakawandisa uye foto ichave yakawandisa. Muchiitiko ichi, kushandisa firita yakakodzera ye neutral density kwakaenzana nekumisa kumira kumwe chete kana kupfuura, zvichibvumira kumhanya kweshutter kunononoka uye mhedzisiro yekublur yekufamba yaunoda.
Sefa ine giredhi repamusoro-soro, inozivikanwawo sesefa ine giredhi repamusoro-soro reND, sefa ine giredhi repakati nepakati, kana sefa ine giredhi repamusoro-soro, ifirita re optical rine transmission yechiedza inoshanduka. Izvi zvinobatsira kana imwe nzvimbo yemufananidzo yakajeka uye yasara isina kujeka, semufananidzo wekunyura kwezuva. Maumbirwo efirita iyi ndeyekuti hafu yepasi yelenzi inopenya, uye zvishoma nezvishoma inoshanduka kuenda kune mamwe matoni, akadai segradient grey, gradient blue, gradient red, nezvimwewo. Inogona kukamurwa kuita sefa ine giredhi repamusoro-soro uye sefa ine gradient diffuse. Kubva pamaonero echimiro chegradient, inogona kukamurwa kuita soft gradient uye hard gradient. "Soft" zvinoreva kuti transition range yakakura, uye zvinopesana. . Sefa ine giredhi repamusoro-soro inowanzo shandiswa mukutora mifananidzo. Chinangwa chayo ndechekuita nemaune kuti chikamu chepamusoro chemufananidzo chiwane toni yeruvara inotarisirwa pamwe nekuona kuti toni yeruvara rwechikamu chezasi chemufananidzo inoonekwa zvakanaka.
Mafirita egrey graduated neutral-density, anozivikanwawo seGND filters, ayo ari hafu yechiedza chinotumira uye hafu yechiedza chinovhara, achivhara chikamu chechiedza chinopinda mulenzi, anoshandiswa zvakanyanya. Anonyanya kushandiswa kuwana musanganiswa wakakodzera wekuratidzwa unobvumirwa nekamera muhupamhi hwakadzika hwemifananidzo yemunda, kutora mifananidzo nekukurumidza, uye mamiriro echiedza chakasimba. Anowanzo shandiswawo kuyera toni. GND filter inoshandiswa kuyera musiyano uripo pakati pezvikamu zvepamusoro nepazasi kana kuruboshwe nerudyi zvechidzitiro. Inowanzo shandiswa kuderedza kupenya kwedenga uye kuderedza musiyano uripo pakati pedenga nepasi. Pamusoro pekuona kuti chikamu chezasi chinoonekwa zvakanaka, inogona kudzvinyirira kupenya kwedenga repamusoro, zvichiita kuti kuchinja pakati pechiedza nerima kunyorove, uye inogona kuratidza magadzirirwo emakore. Kune mhando dzakasiyana dzemafirita eGND, uye grayscale yakasiyanawo. Inoshanduka zvishoma nezvishoma kubva kugrey yakasviba kuenda kugrey isina ruvara. Kazhinji, zvinosarudzwa kuishandisa mushure mekuyera musiyano wechidzitiro. Ratidza zvinoenderana nechiyero chakayerwa chechikamu chisina ruvara, uye gadzirisa zvimwe kana zvichidikanwa.
Nguva yekutumira: Kukadzi-07-2023
