This is so sad.... I bought a flash and it works great on my husbands Canon 300D. A few months later we were blessed with some money to where I could buy a Canon 30D (got it refurbished for $899 on Adorama). Now the flash does not work on the new camera. I do not know the modle # but the brand is Phoenix. I do not have much to spend... but I can save up a little but what shall I do? Been doing lots of research and I give up.