Dzidza Kuti Ungaruramisa Sei Terefhoto Lens Distortion
Pincushion kusiyanisa ndeimwe yematambudziko maduku emera lens anogona kuitika uye kugadzira migumisiro isina kunaka mumifananidzo yako. Zvisinei, zviri nyore kururamisa kana kuderedza kana iwe uchiziva kuti unofanira kutarisa uye nei ichiitika.
Chii chinonzi Pincushion Distortion?
Pincushion kusiyanisa ichinhu chinokonzera lens chinokonzera mifananidzo kuti ichinyorwe mukati. Funga nezvazvo sechinhu chinokonzera pincushion sepini inosundirwa mukati maro: chivara chakakomberedza pini chinoderera pasi uye chakatarira pini sezvo simba rinoshandiswa.
Imwe nzira yekufungidzira kuti kushandiswa kwepincushion kukanganisa kutarisa chikamu chepa grid pepa. Putira pakati pepa pepa uye ona kuti migwagwa yakarurama yegridhi inotanga kupinda mukati kune indentation. Kana iwe waive uchiona chivako chakareba nemitsara yakajeka, pincushion kukanganiswa kwema-lens kwaizova nemigumisiro yakafanana.
Pincushion kusiyanisa inowanzobatanidzwa ne telephoto lenses , uye kunyanya, zoom telephotos. Kukanganisa kunowanzoitika pamagumo e telephoto ye lens. Iyo pincushion kusiyanisa inowedzera inowedzera nechokuita icho chinhu chinobva kune optical axis ye lens.
Icho chinopesana nemigumisiro yebhari lens distortion uye, kufanana neshamwari yayo, pincushion kusiyanisa inonyanya kuonekwa mumifananidzo ine migwagwa yakarurama (kunyanya kana mitsara iri pedyo nechepamusoro pechifananidzo).
Fixing Pincushion Distortion
Pincushion kukanganiswa kunogona kugadziriswa nyore nyore mumazuva ano mapurogiramu ekugadzira mifananidzo yakafanana neAdobe Photoshop, iyo ine "lens distortion" correction filter. Mipurogiramu yekugadzira mifananidzo yakawanda inopawo zvishoma zvishoma zvigadziriswe zvigadziriswe.
Kungofanana nechera kunokanganisa, kupikisa kwepincushion kunosimudzirwa nemigumisiro yemaonero pamifananidzo . Izvi zvinoreva kuti zvimwe zvekuvhiringidza uku zvinogona kururamiswa mukamera.
Paunenge uchipfura, iwe unogona kutora matanho mashomanana ekubvisa kana kuderedza pincushion kusiyanisa:
- Nokuti pincushion kusiyanisa kazhinji inobatanidza zvinhu nemitsetse yakajeka, unogona kuderedza kusvibiswa kwepincushion kukanganisa nokupfura zvinhu zvisina mitsetse yakarurama. (Kwete nguva dzose inogoneka, yakarurama?)
- Edza kudzivisa kupfura pamusana pokukudzwa kwe telephoto zoom lens. Swedera pedyo nehurukuro uye sarudzai kana zvichibvira kana kupfura mufananidzo wacho zvishomanana kupfuura iwe waunoda uye uchikohwa mumakombiyuta.
- Enda kune imwe nzvimbo uye ona kana maonero akasiyana echinhu ichi kuderedza pincushion effect. Iwe ungadawo kuchinja maonero zvakakwana uye usabvisa mifananidzo yacho zvakananga kuitira kuti kuve kukanganisa kuve chinhu chakanaka kumufananidzo we aesthetics. (Kana iwe usingakwanisi kuigadzirisa, itaira!)
- Kana uine mitsara yakajeka muchinhu chako, edza kuvachengetedza pedyo nechepamusoro pefaira sezvaungaita. Mitsara iri pedyo nechepakati yemufananidzo ichaonekwa zvakare kuti yakanyengedzwa nokuti fomu iri mutsara wakarurama.