Choose the best screen
Spectacle rewards size; use the largest, sharpest screen in the house.
Dim the room
Draw the curtains and switch off lamps behind the viewer so dark scenes keep their detail.
Check the version
Services often list a film in several qualities; JustWatch marks which ones offer 4K.
A film to test with
2001: A Space Odyssey has deep blacks, bright whites and fine detail in every shot.
