Artist: Jeff Wall
I have been looking at one of my long term favorite artists: Jeff Wall. These videos from the White Cube website demonstrate some of his work methodologies.
http://whitecube.com/channel/in_the_studio_1/jeff_wall_in_the_studio_part_i/
http://whitecube.com/channel/in_the_studio_1/jeff_wall_in_the_studio_part_ii/