Hi, we want to take photos of some small objects that will be up for sale on our new website. We have tried to take photos but not getting enough light (the background is coming out too dark). We are using a tent and photography lamps. We know that using more than one flash will probably make a big difference. We are on a budget and don't want/need anything fancy. We are not entirely sure what we need so I am hoping for some help. We want 3 flashes (one on the camera and two others). Am I right in thinking the only other thing we will need is a trigger set of some sort so all the flashes go off together?