22/02/25Izinga lozimele wekhamera isivinini lapho amafreyimu angatholwa yikhamera. Isivinini esikhulu sekhamera siyadingeka ukuze kuthathwe izinguquko ezihlokweni zesithombe esiguqukayo, kanye nokuvumela idatha ephezulu. Noma kunjalo, lokhu kuphuma okuphezulu kuza nokubi okungaba khona kwenani elikhulu ledatha ekhiqizwa ikhamera. Lokhu kunganquma uhlobo lwesixhumi esibonakalayo esisetshenziswa phakathi kwekhamera nekhompyutha, nokuthi kungakanani ukugcinwa nokucutshungulwa kwedatha okudingekayo. Kwezinye izimo, izinga lozimele lingase likhawulelwe isilinganiso sedatha yesixhumi esibonakalayo esisetshenzisiwe.
Kumakhamera amaningi e-CMOS, izinga lozimele linqunywa inombolo yemigqa yamaphikseli esebenzayo ekutholweni, engancishiswa kusetshenziswa indawo yentshisekelo (ROI). Ngokuvamile, ubude be-ROI esetshenzisiwe kanye nezinga lozimele eliphakeme lihambisana ngokuphambene - ukuhlukanisa ngohhafu inombolo yemigqa yamaphikseli asetshenzisiwe kuphinda kabili izinga lozimele lekhamera - nakuba lokhu kungase kungabi njalo.
Amanye amakhamera 'anezindlela zokufunda' eziningi, ngokuvamile ezivumela ukuhwebelana ukuze kuncishiswe ububanzi obuguquguqukayo, ukuze kushintshwe amanani ozimele aphezulu. Isibonelo, ngokuvamile amakhamera esayensi angase abe nemodi ye-'High Dynamic Range' engu-16-bit, enobubanzi obukhulu obuguqukayo obunikeza ukufinyelela kukho kokubili umsindo ophansi wokufunda nomthamo omkhulu ogcwele kahle. Okunye okutholakalayo kungase kube imodi 'Ejwayelekile' noma 'Yesivinini' engu-12-bit, enikeza isilinganiso esiphindwe kabili sozimele, ukushintshanisa nobubanzi obuguquguqukayo obuncishisiwe, ngokuncipha komthamo ogcwele wokuthwebula isithombe esinokukhanya okuphansi, noma umsindo okhulayo wokufunda wezinhlelo zokusebenza ezinokukhanya okuphezulu lapho lokhu kungeyona into ekhathazayo.
