Ukuqonda ukuxhamla kwi-Digital Photography
Xa ucinezela inkinobho yokuvala kwaye uthathe umfanekiso, isithombe asiphelelanga ngokukhawuleza kwimemori khadi. Ikhamera yedijithali, ingaba imodeli yelenjiweyo , i- mirrorless ILC , okanye i-DSLR, kufuneka ihambe ngoluhlu lwamanyathelo ngaphambi kokuba umfanekiso ugcinwe kwimemori khadi. Enye yezinto eziphambili zokugcina umfanekiso kwikhamera yedijithali yisitampu somfanekiso.
Indawo yesitoreji yomfanekiso wekhamera ibalulekile ekuqaliseni ukusebenza komsebenzi wekhamera, ngakumbi xa usebenzisa indlela yokuqhutyelwa phambili. Ukuze ufunde kabanzi malunga nekhamera yekhamera kunye nendlela yokwenza ubuninzi balo ngokubhekiselele ekusebenzeni kwekhamera yakho, qhubeka ufunda!
Ukuthabatha idatha yeSithombe
Xa urekhoda ifoto ngekhamera yedijithali, isistim somfanekiso sivelele ekukhanyeni, kwaye inzwa iyalinganisa ukukhanya okubetha nganye ipikseli kwi-sensor. Inzwa yesithombe inezigidi zeepikseli (iindawo zokufumana iifoto) - ikhamera ye-megapixel engama-20 iqulethe izigidi ezigidi ezingama-receptors kwisithombe somenzi.
Inzwa yomfanekiso inquma umbala kunye nobukhulu bokukhanya okubetha nganye ipikseli. Inkqubo yomfanekiso ngaphakathi kwekhamera iguqula ukukhanya kwidatha yedijithali, eyona isethi yamanani ayenziwa yikhompyutha ukudala umfanekiso kwisikrini sokubonisa. Olu datha lusetyenziswa kwikhamera kwaye lubhalwa kwikhadi lokugcina. Idatha kwifayile yesithombe ifana nayo nayiphi na ifayile yekhomputha oyifumanayo, njengefayile yokucwangcisa igama okanye ispredishithi.
Ukuhambisa iData ngokukhawuleza
Ukuncedisa ukukhawuleza le nkqubo, ii- DSLR kunye nezinye iikhamera zedijithali ziqulethe i-camera buffer (equkethe imemori yokufikelela engaqhelekanga, okanye i-RAM), okwenza i-data yolwazi yexeshana ngaphambi kokuba i-hardware yekhamera ibhale kwimemori khadi. I-tampon enkulu yemifanekiso yekhamera ivumela ukuba ezinye iifoto zigcinwe kule ndawo yesikhashana, ngelixa zilinde ukubhalwa kwimemori khadi.
Iikhamera ezahlukahlukeneyo kunye namakhadi eememori ezahlukeneyo zineempawu ezahlukileyo zokubhala, oku kuthetha ukuba banokucima ikhamera yeefayile kwiimilinganiselo ezahlukeneyo. Ngoko ukuba unendawo enkulu yokugcina kwindawo yekhamera, ivumela ukugcinwa kwezithombe ezingaphezulu kule ndawo yesikhashana, evelisa ukusebenza kangcono xa usebenzisa iimodi eqhutywayo yokukhunjulwa (ebizwa ngokuba yindlela yokuqhuma). Le ndlela ibhekisela kumandla ekhamera ukuthatha iibhokhwe eziliqela ngokukhawuleza emva komnye. Inani leeditshulwa ezinokuthi zithathwe ngokufanayo kuxhomekeke kubukhulu bebhokisi lekhamera.
Nangona iikhamera ezingabizi ziquka indawo ezincinci, ii-DSLR ezininzi zinezixhobo ezinkulu ezivumela ukuba uqhubeke ukudubula ngelixa idatha iqhutywe ngasemva. I-DSLRs yasekuqaleni yayingenayo i-buffers nonke, kwaye kwafuneka ulinde uphendu ngalunye ukuba lucubungulwe ngaphambi kokuba uphinde uphinde uphinde uphinde udubule!
Indawo yeBonic Image
I-tampon yekhamera ifumaneka phambi okanye emva kokucwangciswa komfanekiso.
- Ngaphambi kokuba iBuff Processing Processing Buffer. Idatha ye-RAW evela kwintloko ifakwe ngqo kwi-buffer. Idata iyaqwalaselwa kwaye ibhaliswe kwikhadi lokugcina ngokubambisana neminye imisebenzi. Kwiinkhamera ezinolu hlobo lwesiphene, ukudubula okuqhubekayo akunakwandiswa ngokunciphisa ubukhulu befayile.
- Emva kweBuff Processing Bffer. Imifanekiso icutshungulwa kwaye iguqulelwe ibe yifomathi yazo yokugqibela phambi kokufakwa kwi-buffer. Ngenxa yalokhu, inani lamashishini athatywayo kwimodi yokudubula eqhubekayo inganyuswa ngokunciphisa usayizi wefayile yesithombe.
Ezinye i-DSLRs ngoku zisebenzisa i-Smart "buffering". Le ndlela idibanisa iimbini zombini ngaphambi nangemva kwe-buffers. Iifayile ezingaphendulwanga zigcinwe kwi-camera buffer ukuze zivumele "amafayile aphezulu" ngesibini "(fps). Emva koko zenziwe zibe yifomathi yazo yokugqibela kwaye zibuyiselwe kwi-buffer. Iifayile kamva zingabhalwa kumakhadi okugcina ngexesha elifanayo njengoko iimifanekiso zicutshungulwa, oko kukuthintela i-bottleneck.