what’s the difference between a DCI monitor and UHD monitor with the same resolution and pixel density?

Question

For example, what’s the difference between 4K 2160p DCI and 4K 2160p UHD?

In: Technology

Answer 1

DCI 4K is 4096 × 2160. 4K UHD is 3840 × 2160. They don’t have the same resolution, DCI is slightly wider for the same pixel density.