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An example of an outdoor theater setup, with a 100-inch Elite Screens Yard Master 2 screen and the Nebula Mars 3 projector mounted on the Vanguard Alto Pro2+ tripod. Adrienne Maxwell/NYT ...

In the fury of the battle with the White Walkers in Season 7, Episode 6 of 'Game of Thrones' there is a teenie-tiny detail that you may have missed.