Enabled through a simple software update, VDR brings a new dimension to the cinematic experience through precise interframe laser power control to achieve on-screen contrast of up to 10,000:1 with a UHC lens, or 5,000:1 with a high brightness lens. The approach reveals new levels of dark detail and texture in every scene without requiring additional hardware.
Source: https://www.boxofficepro.com/christie-to-launch-vdr-cinelife-upgrade-at-cinemacon/