Cabin
Cachet Paper
Camera Essentials
Canon Asia
Canon Canada in English or Francais
Canon Europa
Canon Malaysia
Canon USA
Century Plastics
Chimera
ClearFile
Clear Sight
Cokin Filters
Cokin's USA distributor
Colorstar C.V.
Contax Cameras
Contax UK
Copal lens shutters
Cosina
Cullman Tripods