I have a Canon 550D and a 400D, both of which I am delighted with. I recently bought a Vivitar 100mm Macro Lens and a 1-1 adaptor to go with them, again I am dlighted with it! The Macro lens came with a free but working perfectly Starblitz 100 Ring Flash. However the ring flash only came with the sync lead which does not fit the Canon 400D or 550D and no hot shoe adaptor. Can anyone tell me if it possible to use a hot shoe adaptor like this one please - https://www.ebay.co.uk/itm/Flash-hot-shoe-adapter-3-5mm-Female-Jack-Socket-2-x-hot-shoes-1-4-mount-thread/162566494168?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649 and if not are there ant other options that will allow me to use the Starblitz 1000 Ring Flash on my Canon Cameras please.