Although ostensibly "filmed" in Vancouver, BC, Canada, Sanctuary is shot almost exclusively using the "green screen" technique - meaning that, unlike most television shows, elaborate sets are unnecessary. Instead, the backdrops for scenes are created using CGI technology. It is also the first North American television series to use the RED camera exclusively - a digital technology capable of capturing images with four times the resolution of a High Definition camera. Because of this new way shooting, the Sanctuary production team executed over 480 visual effects shots - compared to only 12 for an average Stargate SG-1 episode. The opening shot alone took three months for Lee Wilson's special effects team to complete.