Mukutora mafoto uye optics, isina kwayakarerekera density sefa kana ND sefa sefa inoderedza kana kugadzirisa kusimba kweese mawavelengths kana mavara echiedza zvakaenzana pasina kushandura hue yekubereka kweruvara. Chinangwa cheyakajairwa kutora mafoto kusarerekera density mafirita kudzikisa huwandu hwechiedza chinopinda mulenzi. Kuita izvi kunobvumira mutori wemifananidzo kuti asarudze musanganiswa wekuvhura, nguva yekuratidzwa, uye sensor senitivity iyo yaizoburitsa mufananidzo wakanyanyisa. Izvi zvinoitirwa kuita mhedzisiro senge kudzika kwakadzika kwemunda kana kufamba kusvibiswa kwezvinhu munzvimbo yakakura yemamiriro uye mamiriro emuchadenga.
Semuenzaniso, mumwe angangoda kupfura mapopoma painononoka shutter kumhanya kuti agadzire nemaune motion blur effect. Mutori wemifananidzo anogona kuona kuti shutter sipidhi yemasekonzi gumi inodiwa kuti uwane mhedzisiro yaunoda. Pazuva rakajeka kwazvo, panogona kuve nechiedza chakawandisa, uye kunyangwe panguva yakaderera firimu kumhanya uye diki aperture, shutter yekumhanya kwemasekonzi gumi inopinza chiedza chakawandisa uye foto ichave yakanyanyisa kuburitswa. Muchiitiko ichi, kushandisa firita yakakodzera yekumisa density kwakafanana nekumisa imwe kana zvimwe zvinomira, zvichibvumira kunonoka kuvhara kwevhavha uye yaunoda motion blur effect.
Sefa yakapedza kusarerekera-density sefa, inozivikanwawo seakapedza kudzidza ND sefa, yakapatsanura nerere-density sefa, kana ingori yapedza kudzidza sefa, ifirita yemaziso ine kufambisa mwenje unochinja. Izvi zvinobatsira kana imwe nharaunda yemufananidzo ichipenya uye imwe yakasara isiri, semufananidzo wekunyura kwezuva.Chimiro chesefa iyi ndechekuti hafu yezasi yelens inopenya, uye zvishoma nezvishoma inoshandura ichikwira kune mamwe toni, akadaro. se gradient grey, gradient blue, gradient red, etc. Inogona kukamurwa kuita gradient color filter uye gradient diffuse sefa. Kubva pakuona kwe gradient fomu, inogona kukamurwa kuita yakapfava gradient uye yakaoma gradient. "Kupfava" zvinoreva kuti shanduko yakakura, uye zvinopesana. . Iyo gradient sefa inowanzo shandiswa mukutora mifananidzo. Chinangwa chayo ndechekuita nemaune kuti chikamu chepamusoro chepikicha chiwane imwe inotarisirwa toni yeruvara mukuwedzera kune yakajairika toni yeruvara rwepazasi pemufananidzo.
Iwo grey akapedza kusarerekera-density mafirita, anozivikanwawo seGND mafirita, ayo ari hafu mwenje-kutumira uye hafu mwenje-kuvharira, ichivharira chikamu chechiedza kupinda mulenzi, anoshandiswa zvakanyanya. Inonyanya kushandiswa kuwana iyo chaiyo yekuratidzwa musanganiswa inobvumidzwa nekamera mukudzika kwakadzika kwemunda mafoto, yakaderera-kumhanya mafoto, uye yakasimba chiedza mamiriro. Inowanzoshandiswawo kuenzanisa inzwi. Iyo GND sefa inoshandiswa kuyera musiyano pakati pekumusoro nepasi kana kuruboshwe nekurudyi zvikamu zvechidzitiro. Inowanzoshandiswa kuderedza kupenya kwedenga uye kuderedza musiyano pakati pedenga nepasi. Pamusoro pekuona kuratidzwa kwakajairwa kwechikamu chepasi, inogona kunyatso kudzvanya kupenya kwedenga repamusoro, ichiita shanduko pakati pechiedza nerima yakapfava, uye inogona kunyatso simbisa magadzirirwo emakore. Kune marudzi akasiyana eGND mafirita, uye greyscale zvakare yakasiyana. Iyo zvishoma nezvishoma inoshanduka kubva kune yakasviba grey kuenda isina colorless. Kazhinji, inosarudzwa kuishandisa mushure mekuyera mutsauko wechidzitiro. Ratidza zvinoenderana nehukoshi hwemamita hwechikamu chisina ruvara, uye gadzirisa kana zvichidikanwa.
Nguva yekutumira: Feb-07-2023
