Guy Armstrong wrote:
I am currently using Canon DSLR's, T5 and an old 300D, and often shoot with an add on or external flash attachments. A Promaster 7200EDF. When I purchased this flash unit I was informed that if I used my old and much liked Vivitar 283 flash I could ruin or short out the electronics in my cameras. Is this true or was the supplier just trying to sell me a new flash? Please advise.