There are a few things to consider when purchasing a tripod for a heavy camera. The first is the weight of the camera. A tripod should not be too heavy or too light, as it will affect the balance of the camera and may cause it to fall. Additionally, the tripod should be able to hold the camera securely and be able to stable the camera while in use. The tripod should also be able to hold a large enough image for taking pictures of large areas.