The TV natively offers DCI 4K resolution (4096 x 2160) and standard UHD (3840 x 2160). LG doesn't list DCI resolutions on it's site, mostly not to overly confuse consumers dealing with 4K standards. But packed manuals and materials will inform the purchaser. So when I game, it's in DCI standards with 6-8K DSR sampling applied.
That being said, LG isn't the only brand that does this. I just wish my main editing Sammy (Samsung) LCD supported it natively, but it only supports UHD. Most of the video material that I capture/render is in DCI standard ...anything beyond that (i.e., 8K RED material), I'm bouncing over to my desktop Dell LCD.