I have just bought a Phantom 3 Pro which I plan to use in precision agriculture in the Philippines. The unit I bought does not come with a NDVI camera and really needs one for the purpose. I've checked the internet and cost of this camera is way too expensive. Does anybody knows a good source of reconditioned NDVI camera that can be fitted to Phantom 3 pro? Or is it possible to modify the stock camera to have NDVI capability. I am just starting in this field and at the moment the cost of a new NDVI camera is not possible for me. Many farmers in the Philippines very high field variability and I would like to help them achieve better yields through precision agriculture.