Kunzwisisa Maitiro Okudzivisa Kuchinja Kusina Kunakirwa muIndaneti Yenyu
Digital artifacts pane chero kusingadi kuchinja kunowanikwa mumufananidzo unokonzerwa nezvinhu zvakasiyana mukati memamera ekamera. Izvo zvinogona kuonekwa mune zvose DSLR kana pikiso uye kupfura kamera uye zvichikonzera kuderedza kunaka kwemufananidzo.
Nhau huru ndeyokuti nekunyatsonzwisisa mhando dzakasiyana dzezvifananidzo zvezvifananidzo, vanogona (nokuda kwechikamu chikuru) kudziviswa kana kugadziriswa vasati mifananidzo isatorwa.
Blooming
Pixels pane sensor DSLR inounganidza photons, iyo inoshandurwa kuva mhepo yemagetsi. Zvisinei, mapikisikoni anogona kutora nguva yakawanda photons yakawanda, iyo inokonzera kuputika kwemari yemagetsi. Izvi zvinoputika zvinogona kupera pamapikiseli akange aripo, zvichiita kuti kuwedzererwa munzvimbo dzechifananidzo. Ichi chinozivikanwa sechichizadza.
Yakawanda yeDLRLRs yemazuva ano ine masuwo anopikisa anobudirira anobatsira kubvisa mari iyi yakawanda.
Chromatic Aberration
Chromatic aberration inowanzowanzoitika apo kupfura neine -angle-angle lens uye inoratidzika semuvara fringing zvakapoteredza zvakasiyana-siyana. Inokonzerwa ne-lens isingafungi nezvevevelengths of light kune imwe chaiyo ndege. Iwe haugoni kuzviona pane LCD skrini, asi inogona kuonekwa panguva yekugadzirisa uye inowanzove iri tsvuku tsvuku kana yerinanisi pamwe nemiganhu yenyaya.
Inogona kugadziriswa nekushandisa lenzi iyo ine mairi maviri kana mamwe magirasi ane maitiro akasiyana-siyana ekudzidzira.
Jaggies kana Aliasing
Izvi zvinoreva mitsetse inooneka yakagadzika pamiganhu ye diagonal mufananidzo wechidijita. Pixels yakareba (kwete kumativi ose) uye nokuti diagonal line ine seti ye square pixels iyo inogona kutarisa sezvikwata zvemasitepisi apo mapikisikwi akareba.
Jaggies inonyangarika nepamusoro-soro makamera nokuti mapikisikisi maduku. DSLRs zvinowanzova nemaitiro anopesana-aliasing, sezvavanogona kuverenga ruzivo kubva kumativi ose emucheto, nokudaro kunoderedza mitsetse.
Kuchenesa mumashure ekugadzirwa kuchawedzera kuonekwa kwejaggies uye ndicho chikonzero vazhinji vanowedzera mafiritsi ane an anti-alias scale. Kuchengetedza kunofanira kutorwa kuti usawedzera kuwandisa kwemaanasi sezvo kunogonawo kuderedza kunaka kwemufananidzo.
JPEG Kugadzirisa
JPEG ndiyo inonyanya kufanana nefafisi yefaira yakashandiswa kuchengetedza mafaira edijitori. Zvisinei, JPEG inopa kushandiswa-kubva pakati pekufananidzira kwemufananidzo uye ukuru hwemufananidzo.
Nguva dzose paunoponesa faira seJPEG, unomanikidza chifananidzo uye unorasikirwa nehuwandu hwehutano . Saizvozvowo, nguva imwe neimwe yamunosvinura uye yevhara JPEG (kunyange kana iwe usingagadziri kuronga pairi), iwe uchiri kurasikirwa nehutano.
Kana ukaronga kuita shanduko dzakawanda kune chifananidzo, zvakanakisisa kuti uzvichengetedze pakutanga mumutambo usingadziviriki, wakadai sa PSD kana TIFF .
Moire
Apo mufananidzo unowanzodzokorora nzvimbo dzepamusoro-soro, izvi zvinogona kudarika kusarudzwa kwekhamera . Izvi zvinokonzera moire, iyo inoratidzika semirasi yemifananidzo yakaiswa pamufananidzo.
Moire inowanzobviswa nepamusoro-soro makamera. Vaya vane pixel yepamusoro vanoverengeka vanogona kushandisa mafirati anorwa-aliasing kuti vagadzirise dambudziko remaire, kunyange zvazvo vanoderedza chifananidzo.
Mhere
Mhere-mhere inoratidzika pamifananidzo sezvinenge zvisingadiwi kana kuti zvisingakanganisi ruvara rwemavara, uye ruzha runowanzokonzerwa nekusimudza ISO yekhamera . Ichave yakanyanya kuoneka mumumvuri uye madema emufananidzo, kazhinji se maduku maduku ezvitsvuku, zvitsvuku, uye bhuruu.
Mheremhere inogona kuderedzwa nokushandisa ISO yakaderera, iyo inopa chibayiro nokukurumidza uye ndicho chikonzero chikuru chekuenda zvakakwirira sezvinonyatsodiwa pakusarudza ISO.