Paul Coulthread, 60, from Norwich, stole from the online photo dealer between 27 November 2007 and 27 September 2012.
A spokesman for Norwich Crown Court told Amateur Photographer that Coulthread sold 15 pieces of kit for £3,620, though the equipment was worth far more.
Warehouse Express, also known as Wex Photographic, was set up in 1997.
A Wex spokesperson had yet to respond to a request for comment at the time of writing.
Coulthread was sentenced at Norwich Crown Court on 3 April.