Zodiac was mastered in 2K (2048 x 1080). 1080p (1920 x 1080) is the exact consumer-friendly version of that master.
Zodiac (2007) Director's Cut on Blu-ray is widely regarded as the definitive version of David Fincher’s meticulous true-crime masterpiece. Presented in 1080p high definition H.264 (AVC/VC-1) encoding Zodiac -2007- Directors Cut - BluRay 1080p.H264...