Left CRT Sony Trinitron 14" and right LCD LG TV / Monitor 19. Another new lag test, this time between screens of different techniques. CRT is lag O and the ideal way to display retro systems. LCD / LED currently in high-end and expensive systems, is approaching, without even matching in response to the old cathode ray tube system. You can pause the video to view that the LCD lag is arround 2 frames or 200ms., not bad for an old LCD.