H, I & J

Harrison Film Changing Tents - From Camera Essentials
Hasselblad - Defintive 120 format camera, Home Page
Hasselblad UK
Hasselblad Xpan - 35mm dual format panoramic camera
Heliopan Filters - Zeiss Glass quality filters
HiTech Filters - Now known as FormatT flters
 

Ikelite Underwater Systems - All manner of underwater housings 

Jobo - Analogue & Digital processing eqpt.