I-4K, i-Ultra HD, noma i-2160p iyisisombululo sokubonisa esingamaphikseli angu-3840 x 2160 noma ama-megapixel angu-8.3 esewonke. Njengoba okuqukethwe kwe-4K kutholakala kakhulu futhi amanani ezibonisi ze-4K ehla, isinqumo se-4K sihamba kancane kodwa kancane kancane ukuze sithathe indawo ye-1080p njengendinganiso entsha.

Uma ungakwazi ukukhokhela ihadiwe edingekayo ukuze isebenze kahle i-4K, kuyakufanelekela ngempela lokho.

Ngokungafani nezifinyezo zesisombululo sesikrini esiphansi eziqukethe amaphikseli aqondile kulebula yazo, njenge-1080p ye-1920×1080 Full HD noma i-1440p ye-2560×1440 Quad HD, isinqumo se-4K sisho cishe amaphikseli avundlile angu-4,000 esikhundleni senani eliqondile.

Njengoba i-4K noma i-Ultra HD inamaphikseli angu-2160 aqondile, ngezinye izikhathi ibizwa ngokuthi i-2160p.

Izinga le-4K UHD elisetshenziswa kuma-TV, ama-monitor, kanye nemidlalo yevidiyo libizwa nangokuthi yi-UHD-1 noma i-UHDTV resolution, kanti ekukhiqizweni kwamafilimu namavidiyo ochwepheshe, i-4K resolution ibizwa ngokuthi yi-DCI-4K (Digital Cinema Initiatives) enamaphikseli angu-4096 x 2160 noma ama-megapixel angu-8.8 esewonke.

I-Digital Cinema Initiatives-4K resolution inesilinganiso se-aspect ratio esingu-256:135 (1.9:1), kanti i-4K UHD inesilinganiso se-16:9 esivame kakhulu.