Sony/Minolta camera have a non-standard hot-shoe, this means they cannot take the standard triggers we have in the studio.  You will need a special adaptor to modify the Sony/Minolta hot-shoe to the standard that is used by all other camera manufacturers.  I don’t have many Sony/Minolta users coming to the studio so it is an item I don’t keep in stock.  However, they are not expensive and it would be worth your while investing in one.  Search for “Sony/Minolta Hot Shoe Adaptor” in Google – they are easy to come by, and not too expensive.