I-4K, i-Ultra HD, okanye i-2160p sisisombululo somboniso we-3840 x 2160 pixels okanye i-8.3 megapixels iyonke.Ngomxholo ongakumbi we-4K okhoyo kunye namaxabiso e-4K ebonisa ehla, isisombululo se-4K sicotha kodwa sihamba ngokucotha kwindlela yokubuyisela i-1080p njengomgangatho omtsha.

Ukuba unako ukuthenga i-hardware efunekayo ukuqhuba i-4K ngokutyibilikayo, ngokuqinisekileyo kufanelekile.

Ngokungafaniyo nezifinyezo zesikrini esisezantsi ezineepixel ezithe nkqo kwileyibhile yazo, ezinje nge-1080p ye-1920×1080 Full HD okanye i-1440p ye-2560×1440 Quad HD, isisombululo se-4K sithetha malunga neepixels ezithe tye ezingama-4,000 endaweni yexabiso elithe nkqo.

Njengoko i-4K okanye i-Ultra HD ineepikseli ezithe nkqo ezingama-2160, ikwabizwa ngokuba yi-2160p ngamanye amaxesha.

Umgangatho we-4K UHD osetyenziselwa iiTV, iimonitha, kunye nemidlalo yevidiyo ikwabizwa ngokuba yi-UHD-1 okanye isisombululo se-UHDTV, ngelixa ifilimu yobuchwephesha kunye nokuveliswa kwevidiyo, isisombululo se-4K sibhalwe njenge-DCI-4K (i-Digital Cinema Initiatives) kunye ne-4096. x 2160 pixels okanye 8.8 megapixels zizonke.

Isisombululo se-Digital Cinema Initiatives-4K sibonisa i-256: 135 (1.9: 1) i-aspect ratio, ngelixa i-4K UHD inomlinganiselo oqhelekileyo we-16: 9.